The 1999 Buick Regal has 425 engine parts with verified fitment on this page — 86 part types and 66 brands, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Each part includes a manufacturer part number and application notes.
On the 1999 Buick Regal, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. 82 parts of the 425 listed are Oil (42 parts), Crankshaft Seal (20 parts) and Oil Filter (20 parts). The other 83 part types cover the remaining 343 parts.
The 1999 Buick Regal was sold with both the 3.8L V6 and the 3.8L V6 Supercharged. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1999 Buick Regal engine parts are ENGINETECH (40 parts), GM GENUINE (33 parts) and MAHLE / CLEVITE (28 parts), plus 63 more brands. Quality grades include Standard Replacement, Economy and High Performance.
72 parts on this 1999 Buick Regal page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including INA ZS2551 (Balance Shaft Sprocket) and ENGINETECH CC421 (Camshaft Bearing). Click any part number to see every vehicle that part fits.
Balance Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | SH1798S | 🇺🇸 US 🇨🇦 CA | Full Set | View on Amazon |
This table covers the Balance Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
One part is listed for the 1999 Buick Regal — MAHLE / CLEVITE SH1798S.
Balance Shaft Sprocket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| INA Popular Fits: 3.8L V6 Supercharged | ZS2551 | 🇺🇸 US 🇨🇦 CA | Driven gear | View on Amazon |
| CLOYES Fits: 3.8L V6 Supercharged | 2551 | 🇺🇸 US 🇨🇦 CA | Balance Shaft Gear | View on Amazon |
| CLOYES Fits: 3.8L V6 Supercharged | 2558 | 🇺🇸 US 🇨🇦 CA | Balance Shaft Gear | View on Amazon |
| INA Fits: 3.8L V6 Supercharged | ZS2558 | 🇺🇸 US 🇨🇦 CA | Driver2nd Design 1.0mm Raised Circular Surface | View on Amazon |
| S.A. GEAR Fits: 3.8L V6 Supercharged | 2551 | 🇺🇸 US 🇨🇦 CA | Driven | View on Amazon |
This table covers the Balance Shaft sprockets.
5 Balance Shaft Sprocket parts for the 1999 Buick Regal come from 3 brands — INA, CLOYES and S.A. GEAR. The "Popular" part is INA ZS2551.
This group includes INA ZS2551, CLOYES 2551 and CLOYES 2558 and the remaining parts above.
Camshaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | ES1541 | 🇺🇸 US | Engine VIN Code 1,4Use roller followers | View on Amazon |
This table covers the camshafts that open the valves.
This group shows a single part: ENGINETECH ES1541.
Camshaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Popular Fits: 3.8L V6 Supercharged | CC421 | 🇺🇸 US | Full Set | View on Amazon |
| DURA-BOND Fits: 3.8L V6 Supercharged | B14 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | CC430 | 🇺🇸 US | Full Set | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | SH1812S | 🇺🇸 US 🇨🇦 CA | Full Set | View on Amazon |
| SEALED POWER Fits: 3.8L V6 Supercharged | 1889M | 🇺🇸 US 🇨🇦 CA | 2nd DesignPosition 1 and 5 Housing Bore 2.3460 IN 2.3480 IN | View on Amazon |
This table covers the Camshaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
5 Camshaft Bearing parts for the 1999 Buick Regal come from 4 brands — ENGINETECH, DURA-BOND, MAHLE / CLEVITE and 1 other brand. The "Popular" part is ENGINETECH CC421.
Part numbers include ENGINETECH CC421, DURA-BOND B14 and ENGINETECH CC430, among others listed above.
Camshaft Retainer / Thrust Plate
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER Fits: 3.8L V6 Supercharged | PG801 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Camshaft Retainer / Thrust plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts.
One part is listed for the 1999 Buick Regal — PIONEER PG801.
Connecting Rod Bearing
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Fits: 3.8L V6 Supercharged | CR6664XP | 🇺🇸 US 🇨🇦 CA | PmaxblackSet | View on Amazon |
| KING ENGINE BEARINGS Fits: 3.8L V6 Supercharged | CR6664XPX | 🇺🇸 US 🇨🇦 CA | PmaxblackSet | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Popular Fits: 3.8L V6 Supercharged | BB624J | 🇺🇸 US | Set | View on Amazon |
| MAHLE / CLEVITE Popular Fits: 3.8L V6 Supercharged | CB1443A | 🇺🇸 US 🇨🇦 CA | A Series (Aluminum)Pair | View on Amazon |
| MAHLE / CLEVITE Popular Fits: 3.8L V6 Supercharged | CB1443A6 | 🇺🇸 US 🇨🇦 CA | A Series (Aluminum)Set | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 89017700 | 🇺🇸 US 🇨🇦 CA | Reman | View on Amazon |
| KING ENGINE BEARINGS Fits: 3.8L V6 Supercharged | CR6664SI | 🇺🇸 US 🇨🇦 CA | BI-Metal (aluminum silicon base)Set | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | CB1806A | 🇺🇸 US 🇨🇦 CA | A Series (Aluminum)Pair | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | CB1806A6 | 🇺🇸 US 🇨🇦 CA | A Series (Aluminum)Set | View on Amazon |
| SEALED POWER Fits: 3.8L V6 Supercharged | 3760A | 🇺🇸 US 🇨🇦 CA | A-Series aluminum bearings | View on Amazon |
| SEALED POWER Fits: 3.8L V6 Supercharged | 63760A | 🇺🇸 US 🇨🇦 CA | SetA-Series aluminum bearings | View on Amazon |
This table covers the bearings in the connecting-rod big ends. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
11 Connecting Rod Bearing parts for the 1999 Buick Regal come from 5 brands — MAHLE / CLEVITE, KING ENGINE BEARINGS, SEALED POWER and 2 other brands. The "Popular" part is ENGINETECH BB624J.
The High Performance section lists 2 options from KING ENGINE BEARINGS — engineered beyond original-equipment specification. KING ENGINE BEARINGS CR6664XP is listed in this group.
In the Standard Replacement grade, MAHLE / CLEVITE, SEALED POWER, ENGINETECH and 2 other brands supply 9 parts: built to original-equipment specification. A representative part number is ENGINETECH BB624J.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Popular Fits: 3.8L V6 Supercharged | ACS3059 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | CS9917 | 🇺🇸 US 🇨🇦 CA | Includes Permadry Molded Rubber Oil Pan Gasket(s), Permadryplus Timing Cover Gasket | View on Amazon |
| ENGINE PRO Fits: 3.8L V6 Supercharged | 379917 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ENGINETECH Fits: 3.8L V6 Supercharged | B38CSA | 🇺🇸 US | View on Amazon | |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | CS5912A | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | CS9917 | 🇺🇸 US 🇨🇦 CA | SetIncludes Molded Rubber Oil Pan Gasket(s), Timing Cover Gasket | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 081012501 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration.
7 Conversion / Lower Gasket Set parts for the 1999 Buick Regal come from 7 brands — APEX, FEL-PRO, ENGINE PRO and 4 other brands. The "Popular" part is APEX ACS3059.
Part numbers include APEX ACS3059, FEL-PRO CS9917 and ENGINE PRO 379917, among others listed above.
Crankcase Vacuum Manifold
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 24503488 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Crankcase Vacuum manifolds. Typical signs include an exhaust tick, a vacuum leak, or a gasket that has burned through. Replace the gaskets and hardware; a warped flange will leak with a new gasket alone.
One part is listed for the 1999 Buick Regal — GM GENUINE 24503488.
Crankshaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | 104000 | 🇺🇸 US | Includes Connecting Rod Bearings & Crankshaft Main BearingsReman | View on Amazon |
This table covers the crankshafts that turn piston motion into rotation.
This group shows a single part: ENGINETECH 104000.
Crankshaft Main Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Popular Fits: 3.8L V6 Supercharged | BC455J | 🇺🇸 US | Set | View on Amazon |
| MAHLE / CLEVITE Popular Fits: 3.8L V6 Supercharged | MS2022P | 🇺🇸 US 🇨🇦 CA | P Series (Tri-Metal)Set | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 89017698 | 🇺🇸 US 🇨🇦 CA | Reman | View on Amazon |
| KING ENGINE BEARINGS Fits: 3.8L V6 Supercharged | MB480SI | 🇺🇸 US 🇨🇦 CA | BI-Metal (aluminum silicon base)Set | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | MS2022A | 🇺🇸 US 🇨🇦 CA | A Series (Aluminum)Set | View on Amazon |
| SEALED POWER Fits: 3.8L V6 Supercharged | 7288MA | 🇺🇸 US 🇨🇦 CA | SetA-Series aluminum bearings | View on Amazon |
This table covers the main bearings that support the crankshaft in the block. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
6 Crankshaft Main Bearing parts are listed for the 1999 Buick Regal, from MAHLE / CLEVITE, ENGINETECH, GM GENUINE and 2 other brands. ENGINETECH BC455J carries the "Popular" badge.
Part numbers include ENGINETECH BC455J, MAHLE / CLEVITE MS2022P and GM GENUINE 89017698, among others listed above.
Crankshaft Main Bearing Cap Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 24503056 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Crankshaft Main Bearing Cap bolts.
This group shows a single part: GM GENUINE 24503056.
Crankshaft Main Bearing Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 711348200 | 🇺🇸 US 🇨🇦 CA | CRANKSHAFT | View on Amazon |
This table covers the wear sleeves used to restore a Crankshaft Main Bearing seal surface.
This group shows a single part: VICTOR REINZ 711348200.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular Fits: 3.8L V6 Supercharged | KWK99193 | 🇺🇸 US 🇨🇦 CA | Kwik-Sleeve | View on Amazon |
| WJB / INMOTION PARTS Popular Fits: 3.8L V6 Supercharged | WS99193 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| FEL-PRO Fits: 3.8L V6 Supercharged | 16276 | 🇺🇸 US 🇨🇦 CA | RearUse with Installation tool | View on Amazon |
| SCHAEFFLER Fits: 3.8L V6 Supercharged | SR3509 | 🇺🇸 US 🇨🇦 CA | Frontwith 1.938 In Shaft | View on Amazon |
| SKF Fits: 3.8L V6 Supercharged | 99328 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| TIMKEN Fits: 3.8L V6 Supercharged | KWK99328 | 🇺🇸 US 🇨🇦 CA | Kwik-Sleeve | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged | WS99328 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
7 Crankshaft Repair Sleeve parts are listed for the 1999 Buick Regal, from TIMKEN, WJB / INMOTION PARTS, FEL-PRO and 2 other brands. TIMKEN KWK99193 carries the "Popular" badge.
This group includes TIMKEN KWK99193, WJB / INMOTION PARTS WS99193 and FEL-PRO 16276 and the remaining parts above.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | BS406211 | 🇺🇸 US 🇨🇦 CA | Rubber | View on Amazon |
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | BS40649 | 🇺🇸 US 🇨🇦 CA | PTFE RubberIncludes Sleeve | View on Amazon |
| GM GENUINE Popular Fits: 3.8L V6 Supercharged | 12582313 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| NATIONAL Popular Fits: 3.8L V6 Supercharged | 710162 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| BCA Fits: 3.8L V6 Supercharged | NS710162 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | S7905A | 🇺🇸 US | Engine VIN Code 1Viton | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 12582320 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | JV1632 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| NATIONAL Fits: 3.8L V6 Supercharged | 320691 | 🇺🇸 US 🇨🇦 CA | RearRadial Seal | View on Amazon |
| SCHAEFFLER Fits: 3.8L V6 Supercharged | SS4494 | 🇺🇸 US 🇨🇦 CA | Front2.75" O.D. X 0.31" Width | View on Amazon |
| SCHAEFFLER Fits: 3.8L V6 Supercharged | SS3878 | 🇺🇸 US 🇨🇦 CA | Rear3.93" O.D. X 0.5" Width | View on Amazon |
| SKF Fits: 3.8L V6 Supercharged | 32289 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| TIMKEN Fits: 3.8L V6 Supercharged | 320691 | 🇺🇸 US 🇨🇦 CA | RearStandard | View on Amazon |
| TIMKEN Fits: 3.8L V6 Supercharged | 5291 | 🇺🇸 US 🇨🇦 CA | RearHeavy Duty | View on Amazon |
| TIMKEN Fits: 3.8L V6 Supercharged | 710162 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 191011701 | 🇺🇸 US 🇨🇦 CA | PTFESet | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 191011801 | 🇺🇸 US 🇨🇦 CA | SetSealing Surface Material: Molded Rubber and Metal | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged | WS320691 | 🇺🇸 US 🇨🇦 CA | RearRadial Seal | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged | WS710162 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged | WS5291 | 🇺🇸 US 🇨🇦 CA | PTFE Rubber Material | View on Amazon |
This table covers the front and rear seals that keep oil in at the crankshaft. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
20 Crankshaft Seal parts are listed for the 1999 Buick Regal, from TIMKEN, WJB / INMOTION PARTS, FEL-PRO and 8 other brands. FEL-PRO BS406211 carries the "Popular" badge.
Crankshaft Seal Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 24507388 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the gaskets that seal the Crankshaft Seal. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
This group shows a single part: GM GENUINE 24507388.
Cylinder Head
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CYLINDER HEAD EXPRESS Fits: 3.8L V6 Supercharged | GM3807N | 🇺🇸 US 🇨🇦 CA | New Cylinder Head with New Valves and Springs | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | CH1119R | 🇺🇸 US 🇨🇦 CA | RemanufacturedIncludes Valves and springs | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | CH1120R | 🇺🇸 US | RemanufacturedIncludes Valves and springs | View on Amazon |
This table covers the cylinder heads that close the top of the block.
3 Cylinder Head parts are listed for the 1999 Buick Regal, from ENGINETECH and CYLINDER HEAD EXPRESS.
Part numbers include CYLINDER HEAD EXPRESS GM3807N, ENGINETECH CH1119R and ENGINETECH CH1120R.
Cylinder Head Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Popular Fits: 3.8L V6 Supercharged | AHB359 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| ENGINETECH Popular Fits: 3.8L V6 Supercharged | HB141 | 🇺🇸 US | Set | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 88891770 | 🇺🇸 US 🇨🇦 CA | Outer7/16-14X2.34IN | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | GS33363 | 🇺🇸 US 🇨🇦 CA | Cylinder Head Bolt KitSet | View on Amazon |
| SKP Fits: 3.8L V6 Supercharged | SKHB141 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 141006401 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
This table covers the bolts that clamp the cylinder head to the block.
6 Cylinder Head Bolt parts for the 1999 Buick Regal come from 6 brands — APEX, ENGINETECH, GM GENUINE and 3 other brands. The "Popular" part is APEX AHB359.
Listed part numbers: APEX AHB359, ENGINETECH HB141 and GM GENUINE 88891770, plus the other parts above.
Cylinder Head Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | 9089PT | 🇺🇸 US 🇨🇦 CA | Head Bolts Must be Replaced | View on Amazon |
| ULTRA-POWER Popular Fits: 3.8L V6 Supercharged | 9918PT | 🇺🇸 US 🇨🇦 CA | Head Bolts Not Included | View on Amazon |
| APEX Fits: 3.8L V6 Supercharged | AHG373 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | 5934 | 🇺🇸 US 🇨🇦 CA | Graphite | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | 5935 | 🇺🇸 US 🇨🇦 CA | Graphite | View on Amazon |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | 9089PT | 🇺🇸 US 🇨🇦 CA | Head Bolts Not Included | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 611044500 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the head gaskets that seal the block to the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
7 Cylinder Head Gasket parts for the 1999 Buick Regal come from 5 brands — ULTRA-POWER, MAHLE / CLEVITE, FEL-PRO and 2 other brands. The "Popular" part is FEL-PRO 9089PT.
Part numbers include FEL-PRO 9089PT, ULTRA-POWER 9918PT and APEX AHG373, among others listed above.
Cylinder Head Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Popular Fits: 3.8L V6 Supercharged | B38HSH | 🇺🇸 US | Engine VIN Code 1with 1st & 2nd design intake End seals | View on Amazon |
| SKP Popular Fits: 3.8L V6 Supercharged | SKHS9917PT | 🇺🇸 US 🇨🇦 CA | Includes Molded Rubber Valve Cover Gaskets, Valve Stem Seals | View on Amazon |
| APEX Fits: 3.8L V6 Supercharged | AHS3114 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ENGINE PRO Fits: 3.8L V6 Supercharged | 369089PT2 | 🇺🇸 US 🇨🇦 CA | Intake Manifold Gaskets with Rubber-Plastic End Seals with Locating pins | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | B38HSHWB | 🇺🇸 US | Includes Head Bolts | View on Amazon |
| FEL-PRO Fits: 3.8L V6 Supercharged | HS9089PT2 | 🇺🇸 US 🇨🇦 CA | Includes Permadry Molded Rubber Valve Cover Gasket(s), Valve Stem Seals | View on Amazon |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | HS9089PT2 | 🇺🇸 US 🇨🇦 CA | Head Bolts Not IncludedIncludes Molded Rubber Valve Cover Gasket(s), Premium Valve Stem Seals | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 021015501 | 🇺🇸 US 🇨🇦 CA | 2nd DesignIntake Manifold Gaskets with Rubber-Plastic End Seals with Locating pins | View on Amazon |
This table covers multi-piece gasket sets for a cylinder-head job. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration.
8 Cylinder Head Gasket Set parts for the 1999 Buick Regal come from 7 brands — ENGINETECH, SKP, APEX and 4 other brands. The "Popular" part is ENGINETECH B38HSH.
Part numbers include ENGINETECH B38HSH, SKP SKHS9917PT and APEX AHS3114, among others listed above.
Cylinder Head Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.8L V6 Supercharged | 565019 | 🇺🇸 US 🇨🇦 CA | Nominal Dia.: 1-1/8"Metric Dia. | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 570006 | 🇺🇸 US 🇨🇦 CA | Metric Size: 28mmMetric Range: 28mm - 31mm | View on Amazon |
This table covers the Cylinder Head plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
DORMAN supplies both parts for the 1999 Buick Regal.
Listed part numbers: DORMAN 565019 and DORMAN 570006.
Cylinder Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | ESL1101 | 🇺🇸 US | View on Amazon | |
| MELLING Fits: 3.8L V6 Supercharged | CSL138 | 🇺🇸 US 🇨🇦 CA | 3/32 IN Wall Thickness | View on Amazon |
| MELLING Fits: 3.8L V6 Supercharged | CSL138X | 🇺🇸 US 🇨🇦 CA | 3/64 IN Wall Thickness | View on Amazon |
| MELLING Fits: 3.8L V6 Supercharged | CSL238 | 🇺🇸 US 🇨🇦 CA | 1/8 IN Wall Thickness | View on Amazon |
This table covers the wear sleeves used to restore a Cylinder seal surface.
4 Cylinder Repair Sleeve parts for the 1999 Buick Regal come from 2 brands — MELLING and ENGINETECH.
Listed part numbers: ENGINETECH ESL1101, MELLING CSL138 and MELLING CSL138X, plus the other parts above.
Engine Block Heater
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KAT'S HEATERS Fits: 3.8L V6 Supercharged | 11416 | 🇺🇸 US 🇨🇦 CA | Freeze Plug Heater | View on Amazon |
| TEMRO Fits: 3.8L V6 Supercharged | 3100041 | 🇺🇸 US 🇨🇦 CA | Front LeftRight Front | View on Amazon |
This table covers the block heaters that warm the coolant or oil in cold weather.
2 Engine Block Heater parts are listed for the 1999 Buick Regal, from KAT'S HEATERS and TEMRO.
Listed part numbers: KAT'S HEATERS 11416 and TEMRO 3100041.
Engine Kit Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | B38K5 | 🇺🇸 US | Engine VIN Code 1 | View on Amazon |
This table covers full gasket kits covering the joints opened in an engine rebuild. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration.
This group shows a single part: ENGINETECH B38K5.
Engine Rebuild Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | MKB3800KP | 🇺🇸 US | Expansion Plugs Not IncludedMaster Rebuild Kit | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | MKB3800LP | 🇺🇸 US 🇨🇦 CA | Master Rebuild KitExpansion Plugs Not Included | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | RCB3800LP | 🇺🇸 US | Expansion Plugs Not IncludedRecon Kit | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | RCB3800MP | 🇺🇸 US 🇨🇦 CA | Recon KitExpansion Plugs Not Included | View on Amazon |
This table covers the Engine rebuild kits.
4 Engine Rebuild Kit parts for the 1999 Buick Regal come from ENGINETECH.
This group includes ENGINETECH MKB3800KP, ENGINETECH MKB3800LP and ENGINETECH RCB3800LP and the remaining parts above.
Exhaust Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular Fits: 3.8L V6 Supercharged | V1735 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ENGINETECH Fits: 3.8L V6 Supercharged | V3223 | 🇺🇸 US | .3132 stem1.526 Head | View on Amazon |
| QUALCAST Fits: 3.8L V6 Supercharged | 101735 | 🇺🇸 US 🇨🇦 CA | 1.520 Head Diameter. 0.313 Stem | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | 01735 | 🇺🇸 US 🇨🇦 CA | Round Groove5/16 Stem Diameter. | View on Amazon |
| SEALED POWER Fits: 3.8L V6 Supercharged | V4557 | 🇺🇸 US 🇨🇦 CA | Chrome Plated StemSize | View on Amazon |
This table covers the exhaust valves that let combustion gas out of the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.
5 Exhaust Valve parts are listed for the 1999 Buick Regal, from MELLING, ENGINETECH, QUALCAST and 2 other brands. MELLING V1735 carries the "Popular" badge.
Listed part numbers: MELLING V1735, ENGINETECH V3223 and QUALCAST 101735, plus the other parts above.
Expansion Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 3.8L V6 Supercharged | 555077 | 🇺🇸 US 🇨🇦 CA | SteelNominal Dia.: 38.25mm | View on Amazon |
| DORMAN Popular Fits: 3.8L V6 Supercharged | 565077 | 🇺🇸 US 🇨🇦 CA | Nominal Dia.: 38.25mmMetric Dia. | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 555018 | 🇺🇸 US 🇨🇦 CA | Nominal Dia.: 25.73mm SCMetric Dia. | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 555029 | 🇺🇸 US 🇨🇦 CA | SteelNominal Dia.: 39.94mm | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 565029 | 🇺🇸 US 🇨🇦 CA | Nominal Dia.: 1-9/16"Metric Dia. | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | PK72 | 🇺🇸 US | Steel | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | PK72B | 🇺🇸 US | Brass | View on Amazon |
| QUALCAST Fits: 3.8L V6 Supercharged | 97151 | 🇺🇸 US 🇨🇦 CA | Steel | View on Amazon |
| QUALCAST Fits: 3.8L V6 Supercharged | 97151B | 🇺🇸 US 🇨🇦 CA | Brass | View on Amazon |
This table covers the Expansion plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
9 Expansion Plug parts for the 1999 Buick Regal come from 3 brands — DORMAN, ENGINETECH and QUALCAST. The "Popular" part is DORMAN 555077.
This group includes DORMAN 555077, DORMAN 565077 and DORMAN 555018 and the remaining parts above.
Harmonic Balancer
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYCO Popular Fits: 3.8L V6 Supercharged | PBO81461SC5 | 🇺🇸 US 🇨🇦 CA | SC Performance 8 RIB 5% Overdrive | View on Amazon |
| DAYCO Fits: 3.8L V6 Supercharged | PB81461SS | 🇺🇸 US 🇨🇦 CA | Race Performance Balancer 8 RIB | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 3.8L V6 Supercharged | 594122 | 🇺🇸 US 🇨🇦 CA | Double Serpentine BeltDiameter | View on Amazon |
| ATP Fits: 3.8L V6 Supercharged | 102055 | 🇺🇸 US 🇨🇦 CA | Double Serpentine | View on Amazon |
| DAYCO Fits: 3.8L V6 Supercharged | PB1461N | 🇺🇸 US 🇨🇦 CA | Premium | View on Amazon |
| PIONEER Fits: 3.8L V6 Supercharged | DA2318 | 🇺🇸 US 🇨🇦 CA | Groove Quantity 6Double Serpentine | View on Amazon |
This table covers the crankshaft pulleys / harmonic balancers at the front of the engine.
6 Harmonic Balancer parts for the 1999 Buick Regal come from 4 brands — DAYCO, DORMAN, ATP and 1 other brand. The "Popular" part is DAYCO PBO81461SC5.
The High Performance section: 2 options from DAYCO. DAYCO PBO81461SC5 is listed in this group.
Standard Replacement: 4 parts, from DORMAN, ATP, DAYCO and 1 other brand. A representative part number is DORMAN 594122.
This group includes DAYCO PBO81461SC5, DAYCO PB81461SS and DORMAN 594122 and the remaining parts above.
Harmonic Balancer Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 24504736 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Harmonic Balancer bolts.
One part is listed for the 1999 Buick Regal — GM GENUINE 24504736.
Intake Manifold
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: 3.8L V6 Supercharged | 615180 | 🇺🇸 US 🇨🇦 CA | Fits Intake Manifold (Fuel Injected)UPPER | View on Amazon |
| VAICO Fits: 3.8L V6 Supercharged | V510142 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VAICO Fits: 3.8L V6 Supercharged | V510406 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Intake manifolds. Typical signs include an exhaust tick, a vacuum leak, or a gasket that has burned through. Replace the gaskets and hardware; a warped flange will leak with a new gasket alone.
3 Intake Manifold parts are listed for the 1999 Buick Regal, from VAICO and FAMOUS BRAND.
Part numbers include FAMOUS BRAND 615180, VAICO V510142 and VAICO V510406.
Intake Manifold Gasket
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | MS98014T | 🇺🇸 US 🇨🇦 CA | SetIncludes Perma DryPlus Intake Manifold Gaskets | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 111056301 | 🇺🇸 US 🇨🇦 CA | Maxdry STL®Improved Design | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | MS959771 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| APEX Fits: 3.8L V6 Supercharged | AMS3733 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | MS16191A | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | MS20204 | 🇺🇸 US 🇨🇦 CA | Molded Rubber / SteelSet | View on Amazon |
| SKP Fits: 3.8L V6 Supercharged | SKTCS459821 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 111059801 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
This table covers the gaskets between the intake manifold and the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
8 Intake Manifold Gasket parts for the 1999 Buick Regal come from 5 brands — FEL-PRO, VICTOR REINZ, MAHLE / CLEVITE and 2 other brands. The "Popular" part is FEL-PRO MS98014T.
In the Premium grade, FEL-PRO and VICTOR REINZ supply 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is FEL-PRO MS98014T.
Standard Replacement: 6 parts, from MAHLE / CLEVITE, FEL-PRO, APEX and 2 other brands. A representative part number is FEL-PRO MS959771.
This group includes FEL-PRO MS98014T, VICTOR REINZ 111056301 and FEL-PRO MS959771 and the remaining parts above.
Intake Plenum Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | MS95744 | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
| APEX Fits: 3.8L V6 Supercharged | AMS3730 | 🇺🇸 US 🇨🇦 CA | Upper | View on Amazon |
| ELRING Fits: 3.8L V6 Supercharged | 164690 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | MS16355 | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | MS95744 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | MS95812 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 151029001 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
This table covers the gaskets that seal the Intake Plenum. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
7 Intake Plenum Gasket parts are listed for the 1999 Buick Regal, from ULTRA-POWER, FEL-PRO, APEX and 3 other brands. FEL-PRO MS95744 carries the "Popular" badge.
Listed part numbers: FEL-PRO MS95744, APEX AMS3730 and ELRING 164690, plus the other parts above.
Intake Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | V3214 | 🇺🇸 US | .3134 stem1.800 Head | View on Amazon |
| MELLING Fits: 3.8L V6 Supercharged | V1858 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| QUALCAST Fits: 3.8L V6 Supercharged | 101858 | 🇺🇸 US 🇨🇦 CA | 1.800 Head Dia. 0.3134 Stem. | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | 01858 | 🇺🇸 US 🇨🇦 CA | Round Groove5/16 Stem Diameter. | View on Amazon |
This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.
4 Intake Valve parts are listed for the 1999 Buick Regal, from ENGINETECH, MELLING, QUALCAST and 1 other brand.
Part numbers include ENGINETECH V3214, MELLING V1858 and QUALCAST 101858, among others listed above.
Motor Mount
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: 3.8L V6 Supercharged | SKM2796 | 🇺🇸 US 🇨🇦 CA | Front RightHydraulic | View on Amazon |
| SKP Fits: 3.8L V6 Supercharged | SKM2796SR | 🇺🇸 US 🇨🇦 CA | FrontSolid Type | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEA / MARMON RIDE CONTROL Popular Fits: 3.8L V6 Supercharged | A2796HY | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| GM GENUINE Popular Fits: 3.8L V6 Supercharged | 10448575 | 🇺🇸 US 🇨🇦 CA | White | View on Amazon |
| ANCHOR Fits: 3.8L V6 Supercharged | 2796 | 🇺🇸 US 🇨🇦 CA | RightHydraulic | View on Amazon |
| DEA / MARMON RIDE CONTROL Fits: 3.8L V6 Supercharged | A5309 | 🇺🇸 US 🇨🇦 CA | Front, Bracket Strut to Radiator Support | View on Amazon |
| PIONEER Fits: 3.8L V6 Supercharged | 612796 | 🇺🇸 US 🇨🇦 CA | RightHydraulic Mount | View on Amazon |
| PIONEER Fits: 3.8L V6 Supercharged | 602796 | 🇺🇸 US 🇨🇦 CA | RightSolid Mount | View on Amazon |
| WESTAR Fits: 3.8L V6 Supercharged | EM2796 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
This table covers the mounts that hold the engine to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes.
9 Motor Mount parts are listed for the 1999 Buick Regal, from SKP, DEA / MARMON RIDE CONTROL, PIONEER and 3 other brands. DEA / MARMON RIDE CONTROL A2796HY carries the "Popular" badge.
In the Economy grade, SKP supplies 2 parts: the catalog's value-priced group. A representative part number is SKP SKM2796.
The Standard Replacement section: 7 options from DEA / MARMON RIDE CONTROL, PIONEER, GM GENUINE and 2 other brands. DEA / MARMON RIDE CONTROL A2796HY is listed in this group.
Part numbers include DEA / MARMON RIDE CONTROL A2796HY, SKP SKM2796 and SKP SKM2796SR, among others listed above.
Motor Mount Bracket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.8L V6 Supercharged | 917000 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the brackets that mount the Motor Mount. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners.
One part is listed for the 1999 Buick Regal — DORMAN 917000.
Motor Mount Bracket Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 11515767 | 🇺🇸 US 🇨🇦 CA | M10X1.5X35HFH | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 11588749 | 🇺🇸 US 🇨🇦 CA | Fits M10X1.5X85Body Side/02-Engine Side-LH/01 | View on Amazon |
This table covers the Motor Mount Bracket bolts.
2 Motor Mount Bracket Bolt parts for the 1999 Buick Regal come from GM GENUINE.
Listed part numbers: GM GENUINE 11515767 and GM GENUINE 11588749.
Motor Mount Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ANCHOR Fits: 3.8L V6 Supercharged | 300652 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DEA / MARMON RIDE CONTROL Fits: 3.8L V6 Supercharged | MK5021 | 🇺🇸 US 🇨🇦 CA | Includes: 1 X A2796HY (Front Right), 1 X A2818 (Trans.), 2 X A2866 (Torque Strut Front Left+Right), 2 X A5309 (Front Left+Right) | View on Amazon |
| SKP Fits: 3.8L V6 Supercharged | SKM3070K | 🇺🇸 US 🇨🇦 CA | Contains: 1 x SKM2796 (Front Right), 2 x SKM2866 (Torqe Strut - Front | View on Amazon |
| WESTAR Fits: 3.8L V6 Supercharged | ETK036 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Motor Mount kits.
4 Motor Mount Kit parts are listed for the 1999 Buick Regal, from ANCHOR, DEA / MARMON RIDE CONTROL, SKP and 1 other brand.
This group includes ANCHOR 300652, DEA / MARMON RIDE CONTROL MK5021 and SKP SKM3070K and the remaining parts above.
Oil
Summary: Notes list SAE 5W-30 and SAE 10W-30. Confirm the engine and the weight on the filler cap before you buy. Replacement brands in this table include VALVOLINE, MOBIL and LIQUI MOLY.
Conventional
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUCAS OIL Fits: 3.8L V6 Supercharged | 10276 | 🇺🇸 US 🇨🇦 CA | CONVENTIONAL MOTOR OIL SAE 10W-301 qt | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 797578 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 10W-30 Conventional1 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 881156 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 10W-30 ConventionalEasy Pour 5 Quart | View on Amazon |
Full Synthetic
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Popular Fits: 3.8L V6 Supercharged | 125195 | 🇺🇸 US 🇨🇦 CA | Full Synthetic 5W-30Mobil Full Synthetic | View on Amazon |
| MOBIL Popular Fits: 3.8L V6 Supercharged | 124315 | 🇺🇸 US 🇨🇦 CA | 5W-30Mobil 1 Advanced | View on Amazon |
| LIQUI MOLY Fits: 3.8L V6 Supercharged | 20136 | 🇺🇸 US 🇨🇦 CA | Special Tec AA 5W-301 Liter | View on Amazon |
| LIQUI MOLY Fits: 3.8L V6 Supercharged | 20226 | 🇺🇸 US 🇨🇦 CA | Molygen New Generation 5W-301 Liter | View on Amazon |
| LIQUI MOLY Fits: 3.8L V6 Supercharged | 20138 | 🇺🇸 US 🇨🇦 CA | Special Tec AA 5W-305 Liter | View on Amazon |
| LIQUI MOLY Fits: 3.8L V6 Supercharged | 20228 | 🇺🇸 US 🇨🇦 CA | Molygen New Generation 5W-305 Liter | View on Amazon |
| LUCAS OIL Fits: 3.8L V6 Supercharged | 10049 | 🇺🇸 US 🇨🇦 CA | FULL SYNTHETIC MOTOR OIL SAE 5W-301 qt | View on Amazon |
| LUCAS OIL Fits: 3.8L V6 Supercharged | 18005 | 🇺🇸 US 🇨🇦 CA | Full Synthetic Motor Oil SAE 5W-306 Gallon | View on Amazon |
| MOBIL Fits: 3.8L V6 Supercharged | 122319 | 🇺🇸 US 🇨🇦 CA | 10W-30Mobil 1 Advanced | View on Amazon |
| MOBIL Fits: 3.8L V6 Supercharged | 102990 | 🇺🇸 US 🇨🇦 CA | Extended Performance 10W-30Mobil 1 Extended Performance | View on Amazon |
| MOBIL Fits: 3.8L V6 Supercharged | 112627 | 🇺🇸 US 🇨🇦 CA | Extended Performance 5W-30Mobil 1 Extended Performance | View on Amazon |
| MOBIL Fits: 3.8L V6 Supercharged | 127568 | 🇺🇸 US | ESP 5W30 1 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | VV935 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 10W-301 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | VV955 | 🇺🇸 US 🇨🇦 CA | Advanced Protection Full Synthetic SAE 5W-301 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 891678 | 🇺🇸 US 🇨🇦 CA | Extended Protection Full Synthetic SAE 5W-301 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 904564 | 🇺🇸 US 🇨🇦 CA | Restore & Protect Full Synthetic SAE 5W-301 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 891670 | 🇺🇸 US 🇨🇦 CA | Extended Protection Full Synthetic SAE 5W-30Easy Pour 5 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 904566 | 🇺🇸 US 🇨🇦 CA | Restore & Protect Full Synthetic SAE 5W-305 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 881164 | 🇺🇸 US 🇨🇦 CA | Advanced Protection Full Synthetic SAE 5W-30Easy Pour 5 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 881165 | 🇺🇸 US 🇨🇦 CA | Advanced Full Synthetic SAE 10W-30Easy Pour 5 Quart | View on Amazon |
High Mileage (>75,000 Miles)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Popular Fits: 3.8L V6 Supercharged | VV1556 | 🇺🇸 US 🇨🇦 CA | Max Life High Mileage Synthetic Blend SAE 5W-301 Quart | View on Amazon |
| MOBIL Fits: 3.8L V6 Supercharged | 125201 | 🇺🇸 US 🇨🇦 CA | Full Synthetic High Mileage 5W-301 Quart | View on Amazon |
| MOBIL Fits: 3.8L V6 Supercharged | 123842 | 🇺🇸 US 🇨🇦 CA | Extended Performance High Mileage 5W-30Synthetic | View on Amazon |
| MOBIL Fits: 3.8L V6 Supercharged | 103535 | 🇺🇸 US 🇨🇦 CA | High Mileage 10W-30Mobil 1 High Mileage | View on Amazon |
| MOBIL Fits: 3.8L V6 Supercharged | 103767 | 🇺🇸 US 🇨🇦 CA | High Mileage 5W-30Mobil 1 High Mileage | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 797976 | 🇺🇸 US 🇨🇦 CA | Max Life High Mileage Synthetic Blend SAE 10W-301 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | VV179 | 🇺🇸 US 🇨🇦 CA | Full Synthetic High Mileage with Max Life Technology SAE 5W-301 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | VV180 | 🇺🇸 US 🇨🇦 CA | Full Synthetic High Mileage with Max Life Technology SAE 10W-301 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 881163 | 🇺🇸 US 🇨🇦 CA | Max Life High Mileage Synthetic Blend SAE 5W-30Easy Pour 5 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 881161 | 🇺🇸 US 🇨🇦 CA | High Mileage with Max Life Technology Synthetic Blend SAE 10W-30Easy Pour 5 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 881170 | 🇺🇸 US 🇨🇦 CA | Full Synthetic High Mileage with Max Life Technology SAE 10W-30Easy Pour 5 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 881169 | 🇺🇸 US 🇨🇦 CA | Full Synthetic High Mileage with Max Life Technology SAE 5W-30Easy Pour 5 Quart | View on Amazon |
Racing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU Fits: 3.8L V6 Supercharged | 30018100750 | 🇺🇸 US | 10W30 Rotary Racing Oil1 Quart | View on Amazon |
Synthetic Blend
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 3.8L V6 Supercharged | 109290 | 🇺🇸 US | Synthetic BlendAPI SP Specifications | View on Amazon |
| MOBIL Popular Fits: 3.8L V6 Supercharged | 124406 | 🇺🇸 US 🇨🇦 CA | Super 10W-30Mobil Super | View on Amazon |
| MOBIL Popular Fits: 3.8L V6 Supercharged | 124407 | 🇺🇸 US 🇨🇦 CA | Super 5W-30Mobil Super | View on Amazon |
| ACDELCO Fits: 3.8L V6 Supercharged | 109292 | 🇺🇸 US | Synthetic BlendAPI SP Specifications | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 797975 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 5W-30 Synthetic Blend1 Quart | View on Amazon |
| VALVOLINE Fits: 3.8L V6 Supercharged | 881159 | 🇺🇸 US 🇨🇦 CA | Daily Protection SAE 5W-30 Synthetic BlendEasy Pour 5 Quart | View on Amazon |
This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable.
42 Oil parts are listed for the 1999 Buick Regal, from VALVOLINE, MOBIL, LIQUI MOLY and 3 other brands. MOBIL 125195 carries the "Popular" badge. Grades run from Conventional through Synthetic Blend; Full Synthetic is the most populated section, led by VALVOLINE, MOBIL, LIQUI MOLY and 1 other brand.
Oil Cooler Mounting Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HAYDEN Fits: 3.8L V6 Supercharged | 238 | 🇺🇸 US 🇨🇦 CA | Rubber Block Mounting Kit for Heavy Duty Oil Cooler | View on Amazon |
| HAYDEN Fits: 3.8L V6 Supercharged | 153 | 🇺🇸 US 🇨🇦 CA | Metal Mounting Bracket Kit for Heavy Duty Oil Cooler | View on Amazon |
This table covers the Oil Cooler Mounting kits.
2 Oil Cooler Mounting Kit parts for the 1999 Buick Regal come from HAYDEN.
Listed part numbers: HAYDEN 238 and HAYDEN 153.
Oil Dipstick / Tube
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 3.8L V6 Supercharged | SK917300 | 🇺🇸 US 🇨🇦 CA | Dipstick Only | View on Amazon |
| AUTOTECNICA Fits: 3.8L V6 Supercharged | GM1421439 | 🇺🇸 US 🇨🇦 CA | Dipstick Only | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 917300 | 🇺🇸 US 🇨🇦 CA | Dipstick OnlyTube Not Included | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 917386 | 🇺🇸 US 🇨🇦 CA | Tube Only | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 12574823 | 🇺🇸 US 🇨🇦 CA | Dipstick Only | View on Amazon |
This table covers the Oil Dipstick tubes.
5 Oil Dipstick / Tube parts are listed for the 1999 Buick Regal, from DORMAN, SKP, AUTOTECNICA and 1 other brand. SKP SK917300 carries the "Popular" badge.
Part numbers include SKP SK917300, AUTOTECNICA GM1421439 and DORMAN 917300, among others listed above.
Oil Dipstick / Tube Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 3.8L V6 Supercharged | 584210 | 🇺🇸 US 🇨🇦 CA | Inner Diameter [MM]: 6,07 | View on Amazon |
| FEL-PRO Fits: 3.8L V6 Supercharged | 73889 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GM GENUINE Fits: 3.8L V6 Supercharged | 24504031 | 🇺🇸 US 🇨🇦 CA | 6.07 ID1.78 Diameter | View on Amazon |
This table covers the seals at the Oil Dipstick / Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
3 Oil Dipstick / Tube Seal parts for the 1999 Buick Regal come from 3 brands — ELRING, FEL-PRO and GM GENUINE.
Part numbers include ELRING 584210, FEL-PRO 73889 and GM GENUINE 24504031.
Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 3.8L V6 Supercharged | 090034 | 🇺🇸 US 🇨🇦 CA | M12 x 1.75 Thread | View on Amazon |
| GM GENUINE Popular Fits: 3.8L V6 Supercharged | 11562588 | 🇺🇸 US 🇨🇦 CA | with SealExc. Magnet | View on Amazon |
| AGS Fits: 3.8L V6 Supercharged | ODP00009 | 🇺🇸 US 🇨🇦 CA | M12x1.75 | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 090091 | 🇺🇸 US 🇨🇦 CA | M12 x 1.75 ThreadMagnetic | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 092018 | 🇺🇸 US 🇨🇦 CA | Thread Size: M12-1.75Twist Style | View on Amazon |
| ELRING Fits: 3.8L V6 Supercharged | 823400 | 🇺🇸 US 🇨🇦 CA | with Seal RingBolt Head-/Nut Design: Male Hex | View on Amazon |
| VAICO Fits: 3.8L V6 Supercharged | V400755 | 🇺🇸 US 🇨🇦 CA | Thread Size: M 12 X 1,75Includes Gasket | View on Amazon |
This table covers the drain plugs in the oil pan.
7 Oil Drain Plug parts are listed for the 1999 Buick Regal, from DORMAN, GM GENUINE, AGS and 2 other brands. DORMAN 090034 carries the "Popular" badge.
This group includes DORMAN 090034, GM GENUINE 11562588 and AGS ODP00009 and the remaining parts above.
Oil Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular Fits: 3.8L V6 Supercharged | 097119 | 🇺🇸 US 🇨🇦 CA | Rubber Gasket | View on Amazon |
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | 70820 | 🇺🇸 US 🇨🇦 CA | Rubber | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 97119 | 🇺🇸 US 🇨🇦 CA | Rubber GasketRubber | View on Amazon |
| ELRING Fits: 3.8L V6 Supercharged | 056130 | 🇺🇸 US 🇨🇦 CA | Material: FPM (fluoride rubber)Outer Diameter [MM]: 20,8 | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 03536966 | 🇺🇸 US 🇨🇦 CA | Priced Individually | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | B45828 | 🇺🇸 US 🇨🇦 CA | Molded Rubber | View on Amazon |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | 097119 | 🇺🇸 US 🇨🇦 CA | ID: 0.448"RUBBER GASKET | View on Amazon |
| ÜRO PARTS Fits: 3.8L V6 Supercharged | 3536966 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 711351300 | 🇺🇸 US 🇨🇦 CA | 0.4150 IN Inside Diameter | View on Amazon |
This table covers the crush washers and gaskets under the oil drain plug. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
9 Oil Drain Plug Gasket parts for the 1999 Buick Regal come from 8 brands — DORMAN, FEL-PRO, ELRING and 5 other brands. The "Popular" part is DORMAN 097119.
Part numbers include DORMAN 097119, FEL-PRO 70820 and DORMAN 97119, among others listed above.
Oil Filler Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CALORSTAT Fits: 3.8L V6 Supercharged | OC2314 | 🇺🇸 US 🇨🇦 CA | PlasticTwist-On | View on Amazon |
| GATES Fits: 3.8L V6 Supercharged | 31103 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOTORAD Fits: 3.8L V6 Supercharged | MO99 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 3.8L V6 Supercharged | SKMO99 | 🇺🇸 US 🇨🇦 CA | with Plastic cap | View on Amazon |
This table covers the caps on the oil filler neck.
4 Oil Filler Cap parts are listed for the 1999 Buick Regal, from CALORSTAT, GATES, MOTORAD and 1 other brand.
Listed part numbers: CALORSTAT OC2314, GATES 31103 and MOTORAD MO99, plus the other parts above.
Oil Filler Cap Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 3.8L V6 Supercharged | 592250 | 🇺🇸 US 🇨🇦 CA | SealMaterial: AEM (Ethylene Acrylate Rubber) | View on Amazon |
| ELRING Fits: 3.8L V6 Supercharged | 823620 | 🇺🇸 US 🇨🇦 CA | SealMaterial: HNBR (hydrogenated nitrile butadiene rubber) | View on Amazon |
| FEL-PRO Fits: 3.8L V6 Supercharged | 73193 | 🇺🇸 US 🇨🇦 CA | Services OEM bonded Cap sealAftermarket Design | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 24100002 | 🇺🇸 US 🇨🇦 CA | Size # 32027.94MM Inner Diameter | View on Amazon |
This table covers the gaskets that seal the Oil Filler Cap. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
4 Oil Filler Cap Gasket parts for the 1999 Buick Regal come from 3 brands — ELRING, FEL-PRO and GM GENUINE.
Listed part numbers: ELRING 592250, ELRING 823620 and FEL-PRO 73193, plus the other parts above.
Oil Filler Tube
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.8L V6 Supercharged | 917414 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: 3.8L V6 Supercharged | SK917414 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | 917414 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Oil Filler tubes.
3 Oil Filler Tube parts are listed for the 1999 Buick Regal, from DORMAN, SKP and ULTRA-POWER.
This group includes DORMAN 917414 and SKP SK917414 and the remaining parts above.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Popular Fits: 3.8L V6 Supercharged | 72132WS | 🇺🇸 US 🇨🇦 CA | Workshop Oil FilterConnection Size: M18X1.5 | View on Amazon |
| CHAMP / LUBER-FINER Popular Fits: 3.8L V6 Supercharged | PH47 | 🇺🇸 US 🇨🇦 CA | Inside Diameter: M18 X 1.5 Thread.Spin-On Filter. | View on Amazon |
| FRAM Fits: 3.8L V6 Supercharged | FE3387A | 🇺🇸 US 🇨🇦 CA | Spin-OnTough Guard or Synthetic Endurance | View on Amazon |
| FVP Fits: 3.8L V6 Supercharged | R1040 | 🇺🇸 US 🇨🇦 CA | Media Material: Synthetic BlendSpin-On Filter | View on Amazon |
| PRO-TEC Fits: 3.8L V6 Supercharged | PXL51040 | 🇺🇸 US 🇨🇦 CA | Height: 3.45 InThread Size: M18X1.5 In | View on Amazon |
| VAICO Fits: 3.8L V6 Supercharged | V400079 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VARIOUS MFR Fits: 3.8L V6 Supercharged | PG111 | 🇺🇸 US 🇨🇦 CA | Spin-On | View on Amazon |
High Performance / Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 3.8L V6 Supercharged | UPF47R | 🇺🇸 US 🇨🇦 CA | Gold / Professional SpecialtyULTRAGUARD | View on Amazon |
| MOBIL Fits: 3.8L V6 Supercharged | M1101A | 🇺🇸 US 🇨🇦 CA | Extended Performance | View on Amazon |
| WIX Fits: 3.8L V6 Supercharged | 51040XP | 🇺🇸 US 🇨🇦 CA | XP Extreme DutyBest For Synthetic Motor Oils | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 3.8L V6 Supercharged | PF47E | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentGasket Or Seal Included: YES | View on Amazon |
| WIX Popular Fits: 3.8L V6 Supercharged | 51040 | 🇺🇸 US 🇨🇦 CA | Height: 3.45 InMedia Material: Enhanced Cellulose | View on Amazon |
| BOSCH Fits: 3.8L V6 Supercharged | 3331 | 🇺🇸 US 🇨🇦 CA | Premium Oil FilterConnection Size: M18X1.5 | View on Amazon |
| CHAMP / LUBER-FINER Fits: 3.8L V6 Supercharged | PH47XL | 🇺🇸 US 🇨🇦 CA | Spin-On Filter.XL Synthetic | View on Amazon |
| DENSO Fits: 3.8L V6 Supercharged | 1502015 | 🇺🇸 US 🇨🇦 CA | Engine Oil Filter or FTF Engine Oil Filter | View on Amazon |
| HASTINGS / BALDWIN Fits: 3.8L V6 Supercharged | LF233 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HENGST Fits: 3.8L V6 Supercharged | E630H02D103 | 🇺🇸 US 🇨🇦 CA | Includes Gasket SetCartridge | View on Amazon |
| HENGST Fits: 3.8L V6 Supercharged | H90W26 | 🇺🇸 US 🇨🇦 CA | Filter Media Material: Enhanced CelluloseSpin-On | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | OC715 | 🇺🇸 US 🇨🇦 CA | Spin-On | View on Amazon |
| VARIOUS MFR Fits: 3.8L V6 Supercharged | PG111EX | 🇺🇸 US 🇨🇦 CA | Extended LifeSpin-On | View on Amazon |
This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive.
20 Oil Filter parts are listed for the 1999 Buick Regal, from BOSCH, CHAMP / LUBER-FINER, VARIOUS MFR and 11 other brands. BOSCH 72132WS carries the "Popular" badge.
Economy: 7 parts, from BOSCH, CHAMP / LUBER-FINER, FRAM and 4 other brands. A representative part number is BOSCH 72132WS.
In the High Performance / Heavy Duty grade, ACDELCO, MOBIL and WIX supply 3 parts: grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO UPF47R.
The Standard Replacement section: 10 options from HENGST, ACDELCO, WIX and 6 other brands. ACDELCO PF47E is listed in this group.
Oil Filter Adapter Gasket / O-Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 25534742 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | B31639 | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
This table covers the Oil Filter Adapter Gasket O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.
2 Oil Filter Adapter Gasket / O-Ring parts for the 1999 Buick Regal come from 2 brands — GM GENUINE and MAHLE / CLEVITE.
Part numbers include GM GENUINE 25534742 and MAHLE / CLEVITE B31639.
Oil Filter Bypass Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 25014612 | 🇺🇸 US 🇨🇦 CA | without VAPOR SEPARATOROPENING PRESSURE 21 PSI NOMINAL | View on Amazon |
This table covers the Oil Filter Bypass valves. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.
One part is listed for the 1999 Buick Regal — GM GENUINE 25014612.
Oil Filter Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Fits: 3.8L V6 Supercharged | AOM6003 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FEL-PRO Fits: 3.8L V6 Supercharged | 70644 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 711350600 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the gaskets that seal the Oil Filter. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
3 Oil Filter Gasket parts for the 1999 Buick Regal come from 3 brands — APEX, FEL-PRO and VICTOR REINZ.
Listed part numbers: APEX AOM6003, FEL-PRO 70644 and VICTOR REINZ 711350600.
Oil Level Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 12603782 | 🇺🇸 US 🇨🇦 CA | Straight Electrical ConnectorMating Connector with Leads Use 12102747 | View on Amazon |
| WELLS Fits: 3.8L V6 Supercharged | 5S3003 | 🇺🇸 US 🇨🇦 CA | Connector Gender: Female | View on Amazon |
This table covers the Oil Level sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors.
2 Oil Level Sensor parts are listed for the 1999 Buick Regal, from GM GENUINE and WELLS.
This group includes GM GENUINE 12603782 and WELLS 5S3003.
Oil Pan
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 3.8L V6 Supercharged | SK264124 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ATP Fits: 3.8L V6 Supercharged | 103106 | 🇺🇸 US 🇨🇦 CA | with Oil Sensor Hole | View on Amazon |
| DORMAN Fits: 3.8L V6 Supercharged | 264124 | 🇺🇸 US 🇨🇦 CA | without Gasket | View on Amazon |
| PIONEER Fits: 3.8L V6 Supercharged | 501099 | 🇺🇸 US 🇨🇦 CA | with Oil Sensor Hole | View on Amazon |
| SPECTRA PREMIUM Fits: 3.8L V6 Supercharged | GMP11B | 🇺🇸 US 🇨🇦 CA | Drain Plug Included | View on Amazon |
This table covers the oil pans that hold the engine's oil sump.
5 Oil Pan parts for the 1999 Buick Regal come from 5 brands — SKP, ATP, DORMAN and 2 other brands. The "Popular" part is SKP SK264124.
Part numbers include SKP SK264124, ATP 103106 and DORMAN 264124, among others listed above.
Oil Pan Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 24504679 | 🇺🇸 US 🇨🇦 CA | M8X1.25X20 | View on Amazon |
This table covers the Oil Pan bolts.
One part is listed for the 1999 Buick Regal — GM GENUINE 24504679.
Oil Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | OS30767R | 🇺🇸 US 🇨🇦 CA | Permadry Molded Rubber | View on Amazon |
| VICTOR REINZ Popular Fits: 3.8L V6 Supercharged | 703141410 | 🇺🇸 US 🇨🇦 CA | RTV Silicone | View on Amazon |
| APEX Fits: 3.8L V6 Supercharged | AOP356 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ELRING Fits: 3.8L V6 Supercharged | 698010 | 🇺🇸 US 🇨🇦 CA | with Oil Sump Plate | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | OS32147 | 🇺🇸 US 🇨🇦 CA | Molded Rubber | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 101021101 | 🇺🇸 US 🇨🇦 CA | Improved Design | View on Amazon |
This table covers the gaskets between the oil pan and the block. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
6 Oil Pan Gasket parts are listed for the 1999 Buick Regal, from VICTOR REINZ, FEL-PRO, APEX and 2 other brands. FEL-PRO OS30767R carries the "Popular" badge.
Listed part numbers: FEL-PRO OS30767R, VICTOR REINZ 703141410 and APEX AOP356, plus the other parts above.
Oil Pump Pickup Tube / Screen
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | S256S | 🇺🇸 US | View on Amazon | |
| MELLING Fits: 3.8L V6 Supercharged | 256S | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SEALED POWER Fits: 3.8L V6 Supercharged | 22414280 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the pickup tubes and screens that feed the oil pump.
3 Oil Pump Pickup Tube / Screen parts for the 1999 Buick Regal come from 3 brands — ENGINETECH, MELLING and SEALED POWER.
This group includes ENGINETECH S256S, MELLING 256S and SEALED POWER 22414280.
Oil Pump Repair Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | EK195 | 🇺🇸 US | View on Amazon | |
| MELLING Fits: 3.8L V6 Supercharged | K195 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SEALED POWER Fits: 3.8L V6 Supercharged | 22453572 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Oil Pump repair kits.
3 Oil Pump Repair Kit parts for the 1999 Buick Regal come from 3 brands — ENGINETECH, MELLING and SEALED POWER.
This group includes ENGINETECH EK195, MELLING K195 and SEALED POWER 22453572.
Piston
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | P5030 | 🇺🇸 US | Recessed HeadCoated Skirt | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | K50306P | 🇺🇸 US | Recessed HeadAnodized Head | View on Amazon |
| SILV-O-LITE Fits: 3.8L V6 Supercharged | 1747HC | 🇺🇸 US 🇨🇦 CA | Hyper-CoatedFloating Pin Type | View on Amazon |
| SILV-O-LITE Fits: 3.8L V6 Supercharged | 1747HCK1 | 🇺🇸 US 🇨🇦 CA | Includes Rings | View on Amazon |
This table covers the pistons that travel in each cylinder. Typical signs include knock, blow-by, or a cylinder that will not hold compression. Piston work is a short-block job. Match bore, pin and ring pack in the notes — not the photo.
4 Piston parts for the 1999 Buick Regal come from 2 brands — ENGINETECH and SILV-O-LITE.
Part numbers include ENGINETECH P5030, ENGINETECH K50306P and SILV-O-LITE 1747HC, among others listed above.
Piston Pin Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | 2233646 | 🇺🇸 US 🇨🇦 CA | Requires Light Reaming | View on Amazon |
| SEALED POWER Fits: 3.8L V6 Supercharged | 3764Y | 🇺🇸 US 🇨🇦 CA | O.D.=1.009 I.D.=0.883 Length=0.85 | View on Amazon |
This table covers the Piston Pin bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
2 Piston Pin Bushing parts are listed for the 1999 Buick Regal, from MAHLE / CLEVITE and SEALED POWER.
This group includes MAHLE / CLEVITE 2233646 and SEALED POWER 3764Y.
Piston Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Popular Fits: 3.8L V6 Supercharged | C96126 | 🇺🇸 US | Chrome or Moly Top PremiumSet | View on Amazon |
| HASTINGS MANUFACTURING Fits: 3.8L V6 Supercharged | 2M4866S | 🇺🇸 US 🇨🇦 CA | Plasma Moly Top Ring1 Cylinder Set | View on Amazon |
| HASTINGS MANUFACTURING Fits: 3.8L V6 Supercharged | 2M4866 | 🇺🇸 US 🇨🇦 CA | Plasma Moly Top RingTop Ring Surface Treatment: Plasma Moly | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | 41847CP | 🇺🇸 US 🇨🇦 CA | PremiumMaterial Carbon Steel / Cast Iron / Stainless Steel | View on Amazon |
| SEALED POWER Fits: 3.8L V6 Supercharged | E919K | 🇺🇸 US 🇨🇦 CA | PremiumRing Groove Widths: 1.2mm, 1.5mm, 2.0mm | View on Amazon |
This table covers the rings that seal each piston to the cylinder wall.
5 Piston Ring parts for the 1999 Buick Regal come from 4 brands — HASTINGS MANUFACTURING, ENGINETECH, MAHLE / CLEVITE and 1 other brand. The "Popular" part is ENGINETECH C96126.
This group includes ENGINETECH C96126, HASTINGS MANUFACTURING 2M4866S and HASTINGS MANUFACTURING 2M4866 and the remaining parts above.
Push Rod
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | EPR605 | 🇺🇸 US | 7.029" Overall Length | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 24504406 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MELLING Fits: 3.8L V6 Supercharged | MPR605 | 🇺🇸 US 🇨🇦 CA | Not Drilled7.029 IN Long | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | 1901533 | 🇺🇸 US 🇨🇦 CA | Intake and Exhaust7.029 Length | View on Amazon |
This table covers the pushrods that transfer lifter motion to the rocker arms.
4 Push Rod parts for the 1999 Buick Regal come from 4 brands — ENGINETECH, GM GENUINE, MELLING and 1 other brand.
Part numbers include ENGINETECH EPR605, GM GENUINE 24504406 and MELLING MPR605, among others listed above.
Re-Ring Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | RMB3800LP | 🇺🇸 US | Expansion Plugs Not IncludedRE-Main Kit | View on Amazon |
This table covers the Re-Ring kits.
One part is listed for the 1999 Buick Regal — ENGINETECH RMB3800LP.
Supercharger Coupling
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.8L V6 Supercharged | 917022 | 🇺🇸 US 🇨🇦 CA | OE FIXOE FIX | View on Amazon |
This table covers the Supercharger couplings.
One part is listed for the 1999 Buick Regal — DORMAN 917022.
Timing Cam Sprocket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CLOYES Popular Fits: 3.8L V6 Supercharged | S812T | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: 3.8L V6 Supercharged | S812T | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| INA Fits: 3.8L V6 Supercharged | ZSS812T | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MELLING Fits: 3.8L V6 Supercharged | S812 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| S.A. GEAR Fits: 3.8L V6 Supercharged | S812 | 🇺🇸 US 🇨🇦 CA | CAM | View on Amazon |
This table covers the Timing Cam sprockets.
5 Timing Cam Sprocket parts are listed for the 1999 Buick Regal, from CLOYES, FVP, INA and 2 other brands. CLOYES S812T carries the "Popular" badge.
Part numbers include CLOYES S812T and INA ZSS812T, among others listed above.
Timing Chain
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular Fits: 3.8L V6 Supercharged | 381A | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| CLOYES Fits: 3.8L V6 Supercharged | C381A | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| INA Fits: 3.8L V6 Supercharged | ZCC381A | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PREFERRED COMPONENTS INC Fits: 3.8L V6 Supercharged | C381A | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| S.A. GEAR Fits: 3.8L V6 Supercharged | C381A | 🇺🇸 US 🇨🇦 CA | Chain | View on Amazon |
This table covers the timing chains that keep the cams in time with the crank.
5 Timing Chain parts for the 1999 Buick Regal come from 5 brands — MELLING, CLOYES, INA and 2 other brands. The "Popular" part is MELLING 381A.
This group includes MELLING 381A, CLOYES C381A and INA ZCC381A and the remaining parts above.
Timing Chain & Component Kit
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular Fits: 3.8L V6 Supercharged | 90381SA | 🇺🇸 US 🇨🇦 CA | Timing Chain KIT | View on Amazon |
| S.A. GEAR Fits: 3.8L V6 Supercharged | 73131 | 🇺🇸 US 🇨🇦 CA | Includes Cam Sprocket, Chain, Crank Sprocket | View on Amazon |
| S.A. GEAR Fits: 3.8L V6 Supercharged | 76077 | 🇺🇸 US 🇨🇦 CA | Includes Cam Sprocket, Chain, Crank Sprocket, Tensioner | View on Amazon |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | C3214 | 🇺🇸 US 🇨🇦 CA | Timing Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CLOYES Popular Fits: 3.8L V6 Supercharged | 90381SB | 🇺🇸 US 🇨🇦 CA | Includes: Timing Chain, Timing Damper, Crankshaft Sprocket, Camshaft Sprocket | View on Amazon |
| CLOYES Fits: 3.8L V6 Supercharged | C3215 | 🇺🇸 US 🇨🇦 CA | Timing SetSet Contains: Timing Chain, Crankshaft Sprocket, Camshaft Sprocket | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | TS381ASB | 🇺🇸 US | View on Amazon | |
| INA Fits: 3.8L V6 Supercharged | ZC90381SB | 🇺🇸 US 🇨🇦 CA | Includes 1 Chain, 1 Cam Sprocket, 1 Crank Sprocket, 1 Tensioner | View on Amazon |
| INA Fits: 3.8L V6 Supercharged | ZCC3215 | 🇺🇸 US 🇨🇦 CA | Includes 1 Cam Sprocket, 1 Chain, 1 Crank Sprocket, 3 PC. | View on Amazon |
This table covers kits that group a timing chain with the related tensioners and guides.
9 Timing Chain & Component Kit parts are listed for the 1999 Buick Regal, from ULTRA-POWER, S.A. GEAR, CLOYES and 2 other brands. ULTRA-POWER 90381SA carries the "Popular" badge.
Economy: 4 parts, from ULTRA-POWER and S.A. GEAR. A representative part number is ULTRA-POWER 90381SA.
The Standard Replacement section: 5 options from CLOYES, INA and ENGINETECH. CLOYES 90381SB is listed in this group.
Part numbers include ULTRA-POWER 90381SA, S.A. GEAR 73131 and S.A. GEAR 76077, among others listed above.
Timing Chain Guide / Damper
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.8L V6 Supercharged | 24503893 | 🇺🇸 US 🇨🇦 CA | Kit | View on Amazon |
| MELLING Popular Fits: 3.8L V6 Supercharged | BD344 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| CLOYES Fits: 3.8L V6 Supercharged | 95344 | 🇺🇸 US 🇨🇦 CA | DAMPER | View on Amazon |
| INA Fits: 3.8L V6 Supercharged | ZT95344 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PREFERRED COMPONENTS INC Fits: 3.8L V6 Supercharged | R75344 | 🇺🇸 US 🇨🇦 CA | 2nd Design | View on Amazon |
| S.A. GEAR Fits: 3.8L V6 Supercharged | 7344 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the guides and dampers that keep the timing chain on its path.
6 Timing Chain Guide / Damper parts for the 1999 Buick Regal come from 6 brands — GM GENUINE, MELLING, CLOYES and 3 other brands. The "Popular" part is GM GENUINE 24503893.
This group includes GM GENUINE 24503893, MELLING BD344 and CLOYES 95344 and the remaining parts above.
Timing Chain Tensioner
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | TT344 | 🇺🇸 US | View on Amazon |
This table covers the tensioners that keep the timing chain taut. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage.
One part is listed for the 1999 Buick Regal — ENGINETECH TT344.
Timing Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Popular Fits: 3.8L V6 Supercharged | ATC3590 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FEL-PRO Fits: 3.8L V6 Supercharged | TCS45971 | 🇺🇸 US 🇨🇦 CA | Permadryplus Timing Cover Gasket IncludedRepair Sleeve Not Included | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 12731121 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | JV1207 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 151020601 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
This table covers the gaskets that seal the Timing Cover. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
5 Timing Cover Gasket parts are listed for the 1999 Buick Regal, from APEX, FEL-PRO, GM GENUINE and 2 other brands. APEX ATC3590 carries the "Popular" badge.
Part numbers include APEX ATC3590, FEL-PRO TCS45971 and GM GENUINE 12731121, among others listed above.
Timing Cover Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: 3.8L V6 Supercharged | 16216 | 🇺🇸 US 🇨🇦 CA | Use with Installation Tool | View on Amazon |
| SKF Fits: 3.8L V6 Supercharged | 99193 | 🇺🇸 US 🇨🇦 CA | Shaft Diameter: 1.937 In | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 711457200 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the wear sleeves used to restore a Timing Cover seal surface.
3 Timing Cover Repair Sleeve parts are listed for the 1999 Buick Regal, from FEL-PRO, SKF and VICTOR REINZ.
This group includes FEL-PRO 16216, SKF 99193 and VICTOR REINZ 711457200.
Timing Cover Repair Sleeve Tool
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 711647000 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Timing Cover Repair Sleeve tools. This is a service tool, not a wear part — match the application in the notes.
One part is listed for the 1999 Buick Regal — VICTOR REINZ 711647000.
Timing Cover Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | 48069 | 🇺🇸 US 🇨🇦 CA | Rubber | View on Amazon |
| SCHAEFFLER Fits: 3.8L V6 Supercharged | SS2992 | 🇺🇸 US 🇨🇦 CA | 2.75" O.D. X 0.36" Width | View on Amazon |
| SKF Fits: 3.8L V6 Supercharged | 19387 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the seals at the Timing Cover. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
3 Timing Cover Seal parts are listed for the 1999 Buick Regal, from MAHLE / CLEVITE, SCHAEFFLER and SKF.
This group includes MAHLE / CLEVITE 48069, SCHAEFFLER SS2992 and SKF 19387.
Timing Crank Sprocket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| S.A. GEAR Popular Fits: 3.8L V6 Supercharged | S811 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| CLOYES Fits: 3.8L V6 Supercharged | S811 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FVP Fits: 3.8L V6 Supercharged | S811 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| INA Fits: 3.8L V6 Supercharged | ZSS811 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PREFERRED COMPONENTS INC Fits: 3.8L V6 Supercharged | G55811 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the crankshaft sprockets that drive the timing chain or belt.
5 Timing Crank Sprocket parts are listed for the 1999 Buick Regal, from S.A. GEAR, CLOYES, FVP and 2 other brands. S.A. GEAR S811 carries the "Popular" badge.
Listed part numbers: S.A. GEAR S811, plus the other parts above.
Torque Strut Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEA / MARMON RIDE CONTROL Fits: 3.8L V6 Supercharged | A2716 | 🇺🇸 US 🇨🇦 CA | Fits Front Right | View on Amazon |
| PIONEER Fits: 3.8L V6 Supercharged | 632720 | 🇺🇸 US 🇨🇦 CA | Fits Front Right | View on Amazon |
This table covers the Torque Strut bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
2 Torque Strut Bushing parts are listed for the 1999 Buick Regal, from DEA / MARMON RIDE CONTROL and PIONEER.
This group includes DEA / MARMON RIDE CONTROL A2716 and PIONEER 632720.
Torque Strut Mount
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 3.8L V6 Supercharged | GM0916620 | 🇺🇸 US 🇨🇦 CA | Fits Front Right | View on Amazon |
| SKP Fits: 3.8L V6 Supercharged | SKM2866 | 🇺🇸 US 🇨🇦 CA | Fits FrontComplete Unit | View on Amazon |
| SKP Fits: 3.8L V6 Supercharged | SKM2901 | 🇺🇸 US 🇨🇦 CA | Front LeftStrut to Radiator Support | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ANCHOR Popular Fits: 3.8L V6 Supercharged | 2866 | 🇺🇸 US 🇨🇦 CA | Fits Front RightCOMPLETE ASSEMBLY | View on Amazon |
| ANCHOR Popular Fits: 3.8L V6 Supercharged | 2901 | 🇺🇸 US 🇨🇦 CA | Fits Front LeftStrut to Radiator Support | View on Amazon |
| DEA / MARMON RIDE CONTROL Popular Fits: 3.8L V6 Supercharged | A2866 | 🇺🇸 US 🇨🇦 CA | Fits Front LeftComplete Part | View on Amazon |
| ANCHOR Fits: 3.8L V6 Supercharged | 2716 | 🇺🇸 US 🇨🇦 CA | Fits Front LeftBushing Only | View on Amazon |
| PIONEER Fits: 3.8L V6 Supercharged | 632716 | 🇺🇸 US 🇨🇦 CA | Fits Front Right | View on Amazon |
| WESTAR Fits: 3.8L V6 Supercharged | EM2716 | 🇺🇸 US 🇨🇦 CA | FrontInsert | View on Amazon |
| WESTAR Fits: 3.8L V6 Supercharged | EM2866 | 🇺🇸 US 🇨🇦 CA | FrontComplete Unit | View on Amazon |
| WESTAR Fits: 3.8L V6 Supercharged | EM2866G | 🇺🇸 US 🇨🇦 CA | Gold Line | View on Amazon |
| WESTAR Fits: 3.8L V6 Supercharged | EM3088 | 🇺🇸 US 🇨🇦 CA | FrontBracket to Radiator Support | View on Amazon |
| WESTAR Fits: 3.8L V6 Supercharged | EM4169 | 🇺🇸 US 🇨🇦 CA | FrontBracket to Radiator Support | View on Amazon |
This table covers the Torque Strut mounts. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes.
13 Torque Strut Mount parts for the 1999 Buick Regal come from 6 brands — WESTAR, ANCHOR, SKP and 3 other brands. The "Popular" part is ANCHOR 2866.
The Economy section: 3 options from SKP and AUTOTECNICA. AUTOTECNICA GM0916620 is listed in this group.
Standard Replacement: 10 parts, from WESTAR, ANCHOR, DEA / MARMON RIDE CONTROL and 1 other brand. A representative part number is ANCHOR 2866.
Valve Cover
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 3.8L V6 Supercharged | 264964 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 12590363 | 🇺🇸 US 🇨🇦 CA | Left | View on Amazon |
This table covers the Valve covers.
2 Valve Cover parts for the 1999 Buick Regal come from 2 brands — DORMAN and GM GENUINE.
Part numbers include DORMAN 264964 and GM GENUINE 12590363.
Valve Cover Bolt / Screw
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 24502164 | 🇺🇸 US 🇨🇦 CA | with Washer To Cylinder Head1/4-20X1 | View on Amazon |
This table covers the Valve Cover Bolt screws. Typical signs include a rounded head, a seeping bleeder, or a fastener that will not hold torque. Do not force a new screw into a stripped hole — repair the thread first.
This group shows a single part: GM GENUINE 24502164.
Valve Cover Bolt Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 25534749 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the seals at the Valve Cover Bolt. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
This group shows a single part: GM GENUINE 25534749.
Valve Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | VS50465R | 🇺🇸 US 🇨🇦 CA | Permadry Molded RubberIncludes Valve Cover Grommets | View on Amazon |
| GM GENUINE Popular Fits: 3.8L V6 Supercharged | 24503937 | 🇺🇸 US 🇨🇦 CA | BETWEEN CVR & CYL HD | View on Amazon |
| APEX Fits: 3.8L V6 Supercharged | AVC373 | 🇺🇸 US 🇨🇦 CA | Does Not Include Grommets | View on Amazon |
| APEX Fits: 3.8L V6 Supercharged | AVC373S | 🇺🇸 US 🇨🇦 CA | Includes Grommets | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | VS50332 | 🇺🇸 US 🇨🇦 CA | Contains GrommetsSet | View on Amazon |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | VS50465R | 🇺🇸 US 🇨🇦 CA | SetIncludes Molded Rubber Gasket(s), Valve Cover Grommets | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 151069001 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
This table covers the gaskets that seal the valve cover to the cylinder head. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
7 Valve Cover Gasket parts are listed for the 1999 Buick Regal, from APEX, FEL-PRO, GM GENUINE and 3 other brands. FEL-PRO VS50465R carries the "Popular" badge.
Listed part numbers: FEL-PRO VS50465R, GM GENUINE 24503937 and APEX AVC373, plus the other parts above.
Valve Cover Grommet
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Fits: 3.8L V6 Supercharged | AES302 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| FEL-PRO Fits: 3.8L V6 Supercharged | ES72833 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | GS33304 | 🇺🇸 US 🇨🇦 CA | KitSet | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 151013601 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
This table covers the Valve Cover grommets.
4 Valve Cover Grommet parts are listed for the 1999 Buick Regal, from APEX, FEL-PRO, MAHLE / CLEVITE and 1 other brand.
Listed part numbers: APEX AES302, FEL-PRO ES72833 and MAHLE / CLEVITE GS33304, plus the other parts above.
Valve Guide
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Fits: 3.8L V6 Supercharged | GD9690 | 🇺🇸 US | Iron | View on Amazon |
| QUALCAST Fits: 3.8L V6 Supercharged | 309690 | 🇺🇸 US 🇨🇦 CA | 2.375 OAL. Spiral I.D. | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | 1409690 | 🇺🇸 US 🇨🇦 CA | Intake and Exhaust0.3150 I.D. | View on Amazon |
This table covers the pressed-in bronze and cast-iron guides that align valve stems. Typical signs include oil smoke on startup, a guide that has gone oval, or a valve that no longer seats quietly. Guides are a machine-shop fit. Confirm stem diameter in the notes before ordering.
3 Valve Guide parts are listed for the 1999 Buick Regal, from ENGINETECH, QUALCAST and SBI.
This group includes ENGINETECH GD9690, QUALCAST 309690 and SBI 1409690.
Valve Lifter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | 2131738 | 🇺🇸 US 🇨🇦 CA | Hydraulic | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Popular Fits: 3.8L V6 Supercharged | L2281 | 🇺🇸 US | HydraulicRoller Follower | View on Amazon |
| MELLING Popular Fits: 3.8L V6 Supercharged | JB2079 | 🇺🇸 US 🇨🇦 CA | Hydraulic | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 12698945 | 🇺🇸 US 🇨🇦 CA | LIFTERS ONLYNON-ACTIVE FUEL MANAGEMENT LIFTER | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | HL124 | 🇺🇸 US 🇨🇦 CA | Complete Assembly | View on Amazon |
| QUALCAST Fits: 3.8L V6 Supercharged | 362148 | 🇺🇸 US 🇨🇦 CA | Hydraulic Roller | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | VL115 | 🇺🇸 US 🇨🇦 CA | Intake and Exhaust0.842 Body Diameter | View on Amazon |
| SEALED POWER Fits: 3.8L V6 Supercharged | HT2148AB | 🇺🇸 US 🇨🇦 CA | Hydraulic Roller Lifters | View on Amazon |
| SEALED POWER Fits: 3.8L V6 Supercharged | HT2148A | 🇺🇸 US 🇨🇦 CA | Hydraulic Roller Lifters | View on Amazon |
This table covers the lifters / tappets that transfer cam motion to the valves.
9 Valve Lifter parts are listed for the 1999 Buick Regal, from GM GENUINE, SEALED POWER, MAHLE / CLEVITE and 4 other brands. ENGINETECH L2281 carries the "Popular" badge.
Economy: 1 part, from MAHLE / CLEVITE. A representative part number is MAHLE / CLEVITE 2131738.
The Standard Replacement section: 8 options from GM GENUINE, SEALED POWER, ENGINETECH and 3 other brands. ENGINETECH L2281 is listed in this group.
Listed part numbers: ENGINETECH L2281, MAHLE / CLEVITE 2131738 and MELLING JB2079, plus the other parts above.
Valve Seat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SBI Popular Fits: 3.8L V6 Supercharged | SB15629 | 🇺🇸 US 🇨🇦 CA | High ChromeFor Cast Iron Cylinder Head | View on Amazon |
| DURA-BOND Fits: 3.8L V6 Supercharged | 30658 | 🇺🇸 US 🇨🇦 CA | Intake1-3/4 O.D.,1-1/2 I.D.,7/32 Depth | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | ST15629 | 🇺🇸 US | Hi-Chrome1.313 X 1.5695 X .2188 or 1.313/1.375T X 1.5695 X .2188 | View on Amazon |
| QUALCAST Fits: 3.8L V6 Supercharged | 2015629 | 🇺🇸 US 🇨🇦 CA | INSERT | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | SB187519 | 🇺🇸 US 🇨🇦 CA | High ChromeFor Cast Iron Cylinder Head | View on Amazon |
This table covers the Valve seats.
5 Valve Seat parts for the 1999 Buick Regal come from 4 brands — SBI, DURA-BOND, ENGINETECH and 1 other brand. The "Popular" part is SBI SB15629.
Part numbers include SBI SB15629, DURA-BOND 30658 and ENGINETECH ST15629, among others listed above.
Valve Spring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular Fits: 3.8L V6 Supercharged | VS2226 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ENGINETECH Fits: 3.8L V6 Supercharged | ERV2212 | 🇺🇸 US | Intake and Exhaust | View on Amazon |
| GM GENUINE Fits: 3.8L V6 Supercharged | 19257200 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| QUALCAST Fits: 3.8L V6 Supercharged | 322212 | 🇺🇸 US 🇨🇦 CA | 1.958 Free Length. Conical | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | 1601267 | 🇺🇸 US 🇨🇦 CA | Intake and Exhaust1.960 Length | View on Amazon |
This table covers the springs that close each intake and exhaust valve. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats.
5 Valve Spring parts for the 1999 Buick Regal come from 5 brands — MELLING, ENGINETECH, GM GENUINE and 2 other brands. The "Popular" part is MELLING VS2226.
Part numbers include MELLING VS2226, ENGINETECH ERV2212 and GM GENUINE 19257200, among others listed above.
Valve Spring Retainer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.8L V6 Supercharged | 24502257 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| QUALCAST Fits: 3.8L V6 Supercharged | 556103 | 🇺🇸 US 🇨🇦 CA | Chrome Moly. 1.030 O.D. 8mm Stem | View on Amazon |
This table covers the Valve Spring retainers.
2 Valve Spring Retainer parts for the 1999 Buick Regal come from 2 brands — GM GENUINE and QUALCAST.
Part numbers include GM GENUINE 24502257 and QUALCAST 556103.
Valve Spring Retainer Keeper
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.8L V6 Supercharged | 10166345 | 🇺🇸 US 🇨🇦 CA | Material: Alloy Steel | View on Amazon |
| MELLING Popular Fits: 3.8L V6 Supercharged | VL760 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ENGINETECH Fits: 3.8L V6 Supercharged | EPC291 | 🇺🇸 US | Single Round Groove | View on Amazon |
| PIONEER Fits: 3.8L V6 Supercharged | PF840 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| QUALCAST Fits: 3.8L V6 Supercharged | 345005 | 🇺🇸 US 🇨🇦 CA | 0.314 Stem. Round Bead In Middle. | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | 1211085 | 🇺🇸 US 🇨🇦 CA | Intake and Exhaust0.2900 Length | View on Amazon |
This table covers the keepers that lock each valve-spring retainer to the stem.
6 Valve Spring Retainer Keeper parts for the 1999 Buick Regal come from 6 brands — GM GENUINE, MELLING, ENGINETECH and 3 other brands. The "Popular" part is GM GENUINE 10166345.
Part numbers include GM GENUINE 10166345, MELLING VL760 and ENGINETECH EPC291, among others listed above.
Valve Stem Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ENGINETECH Popular Fits: 3.8L V6 Supercharged | S2926 | 🇺🇸 US | Outside Diameter: 0.602Seal Type: Positive-Metal Clad | View on Amazon |
| ENGINETECH Popular Fits: 3.8L V6 Supercharged | S2927 | 🇺🇸 US | Outside Diameter: 0.630Seal Type: Positive-Metal Clad | View on Amazon |
| FEL-PRO Popular Fits: 3.8L V6 Supercharged | SS72144 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| APEX Fits: 3.8L V6 Supercharged | AVS3059 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
| ELRING Fits: 3.8L V6 Supercharged | 723420 | 🇺🇸 US 🇨🇦 CA | Body code: WF69 | View on Amazon |
| ENGINETECH Fits: 3.8L V6 Supercharged | S320V | 🇺🇸 US | VitonSeal Type: Positive-Ring & Band | View on Amazon |
| MAHLE / CLEVITE Fits: 3.8L V6 Supercharged | SS45911 | 🇺🇸 US 🇨🇦 CA | SetMetal with Molded Rubber | View on Amazon |
| QUALCAST Fits: 3.8L V6 Supercharged | 3880555 | 🇺🇸 US 🇨🇦 CA | Viton Metal Clad | View on Amazon |
| QUALCAST Fits: 3.8L V6 Supercharged | 3881945 | 🇺🇸 US 🇨🇦 CA | Viton Ring and Band | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | 1221259 | 🇺🇸 US 🇨🇦 CA | ExhaustViton Material | View on Amazon |
| SBI Fits: 3.8L V6 Supercharged | 1221258 | 🇺🇸 US 🇨🇦 CA | IntakeViton Material | View on Amazon |
| ULTRA-POWER Fits: 3.8L V6 Supercharged | SS72144 | 🇺🇸 US 🇨🇦 CA | SetPremium Valve Stem Seals Included | View on Amazon |
| VICTOR REINZ Fits: 3.8L V6 Supercharged | 121005001 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
This table covers the seals on each valve stem that control oil into the guides. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
13 Valve Stem Seal parts are listed for the 1999 Buick Regal, from ENGINETECH, QUALCAST, SBI and 6 other brands. ENGINETECH S2926 carries the "Popular" badge.
Variable Valve Timing (VVT) Solenoid / Actuator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.8L V6 Supercharged | 5S1233 | 🇺🇸 US 🇨🇦 CA | Adjuster Magnet | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Fits: 3.8L V6 Supercharged | SS10687 | 🇺🇸 US 🇨🇦 CA | Adjuster MagnetEngine Variable Timing Adjuster Magnet | View on Amazon |
This table covers the oil-control solenoids that command the cam phasers. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same.
2 Variable Valve Timing (VVT) Solenoid / Actuator parts are listed for the 1999 Buick Regal, from WELLS and DELPHI.
Economy: 1 part, from WELLS. A representative part number is WELLS 5S1233.
The Standard Replacement section: 1 option from DELPHI. DELPHI SS10687 is listed in this group.
Listed part numbers: WELLS 5S1233 and DELPHI SS10687.
Buying Engine Parts for a 1999 Buick Regal
On this vehicle, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components.
- Match the engine first. Every engine part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Oil and Crankshaft Seal .
Frequently Asked Questions
How many engine parts fit the 1999 Buick Regal?
Our catalog currently lists 425 engine parts for the 1999 Buick Regal across 86 subcategories and 66 brands, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Each part is matched to the engine(s) it fits.
Do engine parts differ between 1999 Buick Regal engines?
Yes. Every engine part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of engine problems on a 1999 Buick Regal?
Common symptoms include oil spots under the vehicle, blue or white exhaust smoke, ticking from the valvetrain, or coolant mysteriously disappearing. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What oil viscosity is listed for the 1999 Buick Regal?
Oil rows on this page include SAE 5W-30 and SAE 10W-30. Confirm the engine and the weight on the filler cap before you buy — high-mileage and standard fills can differ.
What should I replace at the same time?
Where labor overlaps, replace the seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1999 Buick Regal was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 1999 Buick Regal?
First match the engine — each row shows which engine(s) the part fits. Then engine hard parts are unforgiving of guesswork — confirm the casting or engine code before ordering, because one model year can hide two different blocks. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1999 Buick Regal
Engine Parts for Other Buick Regal Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.