2015 Buick Regal Engine Parts

This table covers the Balance shafts. Read more

3 Balance Shaft parts are listed for the 2015 Buick Regal, from AUTOTECNICA and GM GENUINE.

Part numbers include AUTOTECNICA GM1423206, AUTOTECNICA GM142305 and GM GENUINE 25203088.

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. Read more

2 Balance Shaft Bearing parts are listed for the 2015 Buick Regal, from ENGINETECH and GM GENUINE.

Listed part numbers: ENGINETECH CC432 and GM GENUINE 12581395.

This table covers the chains that drive the balance shafts. Read more

22 Balance Shaft Chain parts for the 2015 Buick Regal come from 8 brands — CLOYES, MELLING, PREFERRED COMPONENTS INC and 5 other brands. The "Popular" part is CLOYES C919.

In the Chain Only grade, PREFERRED COMPONENTS INC, S.A. GEAR, CLOYES and 3 other brands supply 13 parts: grouped under the catalog's "Chain Only" designation — the notes column spells out what sets them apart. A representative part number is CLOYES C919.

The Kit section lists 9 options from CLOYES, MELLING, SKP and 2 other brands — grouped under the catalog's "Kit" designation — the notes column spells out what sets them apart. CLOYES 94202SAX is listed in this group.

This table covers the guides that keep the balance-shaft chain on its path. Read more

27 Balance Shaft Chain Guide parts for the 2015 Buick Regal come from 7 brands — INA, GM GENUINE, MELLING and 4 other brands. The "Popular" part is GM GENUINE 12655471. A list this long means Balance Shaft Chain Guide applications vary by configuration — the notes carry the qualifiers.

This table covers the Balance Shaft Chain tensioners. 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. Read more

12 Balance Shaft Chain Tensioner parts are listed for the 2015 Buick Regal, from INA, GM GENUINE, CLOYES and 3 other brands. GM GENUINE 12626984 carries the "Popular" badge.

This table covers the Balance Shaft sprockets. Read more

16 Balance Shaft Sprocket parts for the 2015 Buick Regal come from 6 brands — INA, MELLING, CLOYES and 3 other brands. The "Popular" part is MELLING S1370.

This table covers the camshafts that open the valves. Read more

4 Camshaft parts for the 2015 Buick Regal come from GM GENUINE.

Listed part numbers: GM GENUINE 12626896, GM GENUINE 28290130 and GM GENUINE 12604896, plus the other parts above.

This table covers the seals at each camshaft end. 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. Read more

2 Camshaft Seal parts are listed for the 2015 Buick Regal, from ELRING and GM GENUINE.

This group includes ELRING 127610 and GM GENUINE 12574477.

This table covers the Circular / Semi-Circular 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. Read more

One part is listed for the 2015 Buick Regal — GM GENUINE 11588547.

This table covers the connecting rods between each piston and the crankshaft. Read more

2 Connecting Rod parts for the 2015 Buick Regal come from GM GENUINE.

This group includes GM GENUINE 12674411 and GM GENUINE 19541298.

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. Read more

9 Connecting Rod Bearing parts for the 2015 Buick Regal come from 4 brands — MAHLE / CLEVITE, ENGINETECH, GM GENUINE and 1 other brand. The "Popular" part is ENGINETECH BB105J.

The High Performance section lists 1 option from MAHLE / CLEVITE — engineered beyond original-equipment specification. MAHLE / CLEVITE CB1827H is listed in this group.

In the Standard Replacement grade, MAHLE / CLEVITE, ENGINETECH, GM GENUINE and 1 other brand supply 5 parts: built to original-equipment specification. A representative part number is ENGINETECH BB105J.

3 further parts sit outside the graded sections, with the same engine-level match.

This group includes ENGINETECH BB105J, MAHLE / CLEVITE CB1827H and GM GENUINE 12591093 and the remaining parts above.

This table covers the Connecting Rod bolts. Read more

GM GENUINE supplies both parts for the 2015 Buick Regal.

This group includes GM GENUINE 11548927 and GM GENUINE 11570825.

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. Read more

10 Conversion / Lower Gasket Set parts for the 2015 Buick Regal come from 8 brands — AJUSA, ELRING, ENGINETECH and 5 other brands. The "Popular" part is ENGINETECH GM134CSA.

This table covers the crankshafts that turn piston motion into rotation. Read more

2 Crankshaft parts for the 2015 Buick Regal come from 2 brands — ENGINETECH and GM GENUINE.

Part numbers include ENGINETECH 104450 and GM GENUINE 12626959.

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. Read more

5 Crankshaft Main Bearing parts are listed for the 2015 Buick Regal, from GM GENUINE, ENGINETECH, MAHLE / CLEVITE and 1 other brand.

This group includes ENGINETECH BC108J, GM GENUINE 12668646 and GM GENUINE 12591092 and the remaining parts above.

This table covers the sleeves used to restore a grooved crankshaft seal surface. Read more

7 Crankshaft Repair Sleeve parts are listed for the 2015 Buick Regal, from NATIONAL, WJB / INMOTION PARTS, BCA and 1 other brand. NATIONAL 99353 carries the "Popular" badge.

Listed part numbers: NATIONAL 99353, WJB / INMOTION PARTS WS99166 and BCA NS99166, plus the other parts above.

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. Read more

29 Crankshaft Seal parts are listed for the 2015 Buick Regal, from ELRING, GM GENUINE, FEL-PRO and 13 other brands. FEL-PRO BS40739 carries the "Popular" badge. The notes list position, dimensions and spec qualifiers wherever the manufacturer distinguishes between variants.

This table covers the cylinder heads that close the top of the block. Read more

GM GENUINE supplies both parts for the 2015 Buick Regal.

This group includes GM GENUINE 12690428 and GM GENUINE 12608280.

This table covers the Cylinder Head Alignment Dowel pins. Read more

2 Cylinder Head Alignment Dowel Pin parts for the 2015 Buick Regal come from GM GENUINE.

This group includes GM GENUINE 12570326 and GM GENUINE 12656680.

This table covers the bolts that clamp the cylinder head to the block. Read more

13 Cylinder Head Bolt parts for the 2015 Buick Regal come from 8 brands — ELRING, GM GENUINE, APEX and 5 other brands. The "Popular" part is ENGINETECH HB229.

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. Read more

15 Cylinder Head Gasket parts for the 2015 Buick Regal come from 9 brands — APEX, MAHLE / CLEVITE, ULTRA-POWER and 6 other brands. The "Popular" part is APEX AHG1357.

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. Read more

16 Cylinder Head Gasket Set parts for the 2015 Buick Regal come from 10 brands — GM GENUINE, AJUSA, APEX and 7 other brands. The "Popular" part is ENGINETECH GM146HSE.

This table covers the seals at the Cylinder Head. 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. Read more

This group shows a single part: GM GENUINE 12589461.

This table covers the wear sleeves used to restore a Cylinder seal surface. Read more

This group shows a single part: MELLING CSL9349F.

This table covers the block heaters that warm the coolant or oil in cold weather. Read more

3 Engine Block Heater parts are listed for the 2015 Buick Regal, from GM GENUINE and KAT'S HEATERS.

Listed part numbers: GM GENUINE 12586687, GM GENUINE 12587535 and KAT'S HEATERS 24150.

This table covers the Engine covers. Read more

2 Engine Cover parts for the 2015 Buick Regal come from 2 brands — TECHPRO and VARIOUS MFR.

This group includes TECHPRO GM1228144 and the remaining parts above.

This table covers the Engine Cover grommets. Read more

One part is listed for the 2015 Buick Regal — GM GENUINE 12737359.

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. Read more

3 Engine Kit Gasket Set parts for the 2015 Buick Regal come from 2 brands — AJUSA and FEL-PRO.

This group includes AJUSA 50535600, AJUSA 50494200 and FEL-PRO 2603184.

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. Read more

10 Exhaust Valve parts are listed for the 2015 Buick Regal, from GM GENUINE, MAHLE / CLEVITE, MELLING and 4 other brands. ENGINETECH V4381 carries the "Popular" badge.

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. Read more

2 Expansion Plug parts for the 2015 Buick Regal come from MELLING.

Part numbers include MELLING MPP880T and MELLING MPE937R.

This table covers the followers that drive a mechanical fuel pump off the camshaft. Read more

8 Fuel Pump Camshaft Follower parts for the 2015 Buick Regal come from 5 brands — GM GENUINE, STANDARD MOTOR PRODUCTS, WELLS and 2 other brands. The "Popular" part is GM GENUINE 12590679.

Part numbers include GM GENUINE 12590679, DORMAN 926441 and GM GENUINE 12718357, among others listed above.

This table covers the crankshaft pulleys / harmonic balancers at the front of the engine. Read more

14 Harmonic Balancer parts for the 2015 Buick Regal come from 6 brands — DORMAN, ATP, SKP and 3 other brands. The "Popular" part is DORMAN 594451.

The Economy section lists 2 options from SKP — the catalog's value-priced group. SKP SK594713 is listed in this group.

Standard Replacement: 11 parts, from DORMAN, ATP, GM GENUINE and 2 other brands. A representative part number is DORMAN 594451.

1 further part sits outside the graded sections, with the same engine-level match.

This table covers the Harmonic Balancer bolts. Read more

3 Harmonic Balancer Bolt parts are listed for the 2015 Buick Regal, from DORMAN and GM GENUINE.

Listed part numbers: DORMAN 917139, DORMAN 595006 and GM GENUINE 12557840.

This table covers the Harmonic Balancer washers. Read more

This group shows a single part: GM GENUINE 12611099.

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. Read more

3 Intake Manifold parts are listed for the 2015 Buick Regal, from GM GENUINE and LARES.

Listed part numbers: GM GENUINE 12631021, GM GENUINE 12637620 and LARES 33390.

This table covers the Intake Manifold bolts. Read more

This group shows a single part: GM GENUINE 11588352.