1999 Buick Regal Automatic Transmission Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

The 1999 Buick Regal has 275 automatic transmission parts with verified fitment on this page — 71 part types and 47 brands, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Each part includes a manufacturer part number and application notes.

The automatic transmission on the 1999 Buick Regal covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. The largest groups are Transmission Fluid (28 parts), Shift Solenoid (18 parts) and Filter (17 parts). The other 68 part types cover the remaining 212 parts.

Accumulator Cover

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24205584
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed Automatic trans.
View on
Amazon

This table covers the Accumulator covers.

Accumulator Piston

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24206857
🇺🇸 US 🇨🇦 CA
1-2-3Trans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24206857
1-2-3Trans.Code 4T65-E-HD/MN74 Speed
View on
Amazon
TRANSGO Fits: 3.8L V6 Supercharged 4T654ACM
🇺🇸 US 🇨🇦 CA
4th Accumulator Piston
View on
Amazon
TRANSGO Fits: 3.8L V6 Supercharged 4T65ACM
🇺🇸 US 🇨🇦 CA
1-2 & 2-3 Accumulator Piston
View on
Amazon

This table covers the pistons inside a transmission accumulator.

Accumulator Piston Pin

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24203979
🇺🇸 US 🇨🇦 CA
Fits 1-2Trans. code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24203979
Fits:
1-2Trans. code 4T65-E-HD/MN74 speed Automatic trans.or 2-3Trans. code 4T65-E-HD/MN74 speed Automatic trans.
View on
Amazon

This table covers the Accumulator Piston pins.

Accumulator Piston Seal / Sleeve

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 8644917
🇺🇸 US 🇨🇦 CA
4thTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 8644917
4thTrans.Code 4T65-E-HD/MN74 SpeedINR and OTR SealsClutch Accumulator Piston Seal
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 8678473
🇺🇸 US 🇨🇦 CA
Fits 1-2Trans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 8678473
Fits:
1-2Trans.Code 4T65-E-HD/MN74 Speed43.38MM Inside Diameteror 2-3Trans.Code 4T65-E-HD/MN74 Speed43.38MM Inside Diameter
View on
Amazon

This table covers the Accumulator Piston Seal sleeves.

Actuator Feed Limit Valve

Brand Part Number Markets Notes Buy
TRANSGO Fits: 3.8L V6 Supercharged 4T65AFL
🇺🇸 US 🇨🇦 CA
Actuator Feed Limit Valve Repair Kit
View on
Amazon

This table covers the Actuator Feed Limit 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.

Band

Brand Part Number Markets Notes Buy
PIONEER Popular Fits: 3.8L V6 Supercharged 767069
🇺🇸 US 🇨🇦 CA
Low / ReverseTrans. code 4T65-E
View on
Amazon
ATP Fits: 3.8L V6 Supercharged CX45
🇺🇸 US 🇨🇦 CA
Low / ReverseTrans. code 4T65-E
View on
Amazon
ATP Fits: 3.8L V6 Supercharged TPB1030
🇺🇸 US 🇨🇦 CA
Forward
View on
Amazon
PA CARGO Fits: 3.8L V6 Supercharged 84701A
🇺🇸 US 🇨🇦 CA
4 Speed FWD 4T65E Transmission
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 767064
🇺🇸 US 🇨🇦 CA
CenterTrans. code 4T65-E
Fitment notes — PIONEER 767064
CenterTrans. code 4T65-E1st & 2ndcoast
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 767068
🇺🇸 US 🇨🇦 CA
ForwardTrans. code 4T65-E
View on
Amazon
RAYBESTOS POWERTRAIN Fits: 3.8L V6 Supercharged 513843
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E1st, 2nd Coast
View on
Amazon

This table covers the apply bands inside the automatic transmission.

Band Anchor Pin

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 8651798
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon

This table covers the Band Anchor pins.

Boost Valve

Brand Part Number Markets Notes Buy
SONNAX Fits: 3.8L V6 Supercharged 4T65ELB1
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E
View on
Amazon

This table covers the Boost 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.

Bushing

Brand Part Number Markets Notes Buy
PIONEER Popular Fits: 3.8L V6 Supercharged 755056
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EFinal drive internal gear
View on
Amazon
PIONEER Popular Fits: 3.8L V6 Supercharged 755090
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-ECase to Final Drive Internal Gear
View on
Amazon
ATP Fits: 3.8L V6 Supercharged JB65
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EPosition: Final Drive Internal Gear
View on
Amazon
DURA-BOND Fits: 3.8L V6 Supercharged 84061B
🇺🇸 US 🇨🇦 CA
2-1 Coast Drum (1996-Up) 4T60E/4T65E
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 755055
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EDrive sprocket support
Fitment notes — PIONEER 755055
Trans. code 4T65-EDrive sprocket supportinput & 3rd clutch
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 755058
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EInput shaft
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 755094
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EInput Shaft
Fitment notes — PIONEER 755094
Trans. code 4T65-EInput Shaft4th Clutch Shaft
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 755060
🇺🇸 US 🇨🇦 CA
RearTrans. code 4T65-E
Fitment notes — PIONEER 755060
RearTrans. code 4T65-E2nd Clutch Housing
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 755059
🇺🇸 US 🇨🇦 CA
FrontTrans. code 4T65-E
Fitment notes — PIONEER 755059
FrontTrans. code 4T65-E2nd Clutch Housing
View on
Amazon

This table covers the bushings in this assembly. 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.

Bushing Kit

Brand Part Number Markets Notes Buy
DURA-BOND Fits: 3.8L V6 Supercharged TK35
🇺🇸 US 🇨🇦 CA
View on
Amazon
PA CARGO Fits: 3.8L V6 Supercharged K84901G
🇺🇸 US 🇨🇦 CA
4 Speed FWD 4T65E Transmission
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 755170
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E
View on
Amazon

This table covers the Bushing kits.

Case Gasket

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24212897
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
Fitment notes — GM GENUINE 24212897
Trans. code 4T65-E-HD/MN74 speedCHANNEL PLATE
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24206391
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon

This table covers the gaskets that seal the Case. 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.

Clutch Apply Plate

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 8682801
🇺🇸 US 🇨🇦 CA
InputTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 8682801
InputTrans.Code 4T65-E-HD/MN74 speedTO 3RD CLUTCH PLATE
View on
Amazon

This table covers the Clutch Apply 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.

Clutch Housing

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24236214
🇺🇸 US 🇨🇦 CA
InputTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24236214
InputTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon

This table covers the Clutch housings.

Clutch Housing Thrust Bearing

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24227685
🇺🇸 US 🇨🇦 CA
InputTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24227685
InputTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon

This table covers the Clutch Housing Thrust 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.

Clutch Pack Piston

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24205378
🇺🇸 US 🇨🇦 CA
3rdTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24205378
3rdTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24208336
🇺🇸 US 🇨🇦 CA
2ndTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24208336
2ndTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 19368340
🇺🇸 US 🇨🇦 CA
InputTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 19368340
InputTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon
SONNAX Fits: 3.8L V6 Supercharged 8496501K
🇺🇸 US 🇨🇦 CA
3rd Clutch Piston Kit
Fitment notes — SONNAX 8496501K
3rd Clutch Piston Kit
Trans. code 4T65-E
View on
Amazon

This table covers the pistons that apply a clutch pack.

Clutch Plate

Backing Plate

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24204105
🇺🇸 US 🇨🇦 CA
Steel
Fitment notes — GM GENUINE 24204105
Steel
2ndTrans.Code 4T65-E-HD/MN74 speed Automatic trans.Clutch Backing Plate
View on
Amazon

Friction

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.8L V6 Supercharged 24281019
🇺🇸 US 🇨🇦 CA
Fiber
Fitment notes — GM GENUINE 24281019
Fiber
2ndTrans.Code 4T65-E-HD/MN74 speed Automatic trans.Friction Plate
View on
Amazon
GM GENUINE Popular Fits: 3.8L V6 Supercharged 24218248
🇺🇸 US 🇨🇦 CA
Fiber
Fitment notes — GM GENUINE 24218248
Fiber
4thTrans.Code 4T65-E-HD/MN74 speed Automatic trans.Friction Plate
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 8683084
🇺🇸 US 🇨🇦 CA
InputTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 8683084
InputTrans.Code 4T65-E-HD/MN74 speed Automatic trans.Flat Steel 26 Teeth1.99mm ThickFriction Plate
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24216288
🇺🇸 US 🇨🇦 CA
3rdTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24216288
3rdTrans.Code 4T65-E-HD/MN74 speed Automatic trans.EXT SplinesFriction Plate
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24216287
🇺🇸 US 🇨🇦 CA
3rdTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24216287
3rdTrans.Code 4T65-E-HD/MN74 speed Automatic trans.Internal SplinesFriction Plate
View on
Amazon

This table covers the Clutch 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.

Clutch Plate Pack

Friction Plate Pack

Brand Part Number Markets Notes Buy
RAYBESTOS POWERTRAIN Fits: 3.8L V6 Supercharged RCP96084
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E OEM Standard
View on
Amazon
RAYBESTOS POWERTRAIN Fits: 3.8L V6 Supercharged RCPS26
🇺🇸 US 🇨🇦 CA
Stage-1 Performance Module
Fitment notes — RAYBESTOS POWERTRAIN RCPS26
Stage-1 Performance Module
Trans. code 4T65-EStage-1, Performance Module
View on
Amazon

Steel Plate Pack

Brand Part Number Markets Notes Buy
RAYBESTOS POWERTRAIN Fits: 3.8L V6 Supercharged 000587
🇺🇸 US 🇨🇦 CA
Steel Module
Fitment notes — RAYBESTOS POWERTRAIN 000587
Steel Module
Trans. code 4T65-E
View on
Amazon

This table covers the clutch-plate packs inside the transmission or transfer case.

Clutch Seal Ring

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24209498
🇺🇸 US 🇨🇦 CA
2ndTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24209498
2ndTrans.Code 4T65-E-HD/MN74 speedTHIN GROOVE
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 8656342
🇺🇸 US 🇨🇦 CA
InputTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 8656342
InputTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24213410
🇺🇸 US 🇨🇦 CA
2ndTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24213410
2ndTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon

This table covers the Clutch Seal rings.

Detent Cable Seal

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L V6 Supercharged SO37
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EMulti Lip seal
Fitment notes — ATP SO37
Trans. code 4T65-EMulti Lip sealSeal - Detent Control Cable - Top Hat Boot - Throttle Valve Cable
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 760013
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EMulti Lip seal
Fitment notes — PIONEER 760013
Trans. code 4T65-EMulti Lip sealSealDetent Control CableTop Hat BootThrottle Valve Cable
View on
Amazon

This table covers the seals at the Detent Cable. 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.

Dipstick / Fluid Filler Tube Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 1259475
🇺🇸 US 🇨🇦 CA
AT CASE
View on
Amazon

This table covers the seals at the Dipstick / Fluid Filler 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.

Drive Sprocket Bearing

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24214158
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
Fitment notes — GM GENUINE 24214158
Trans. code 4T65-E-HD/MN74 speedRESIDES IN EXTENSION HOUSINGDRAWN CUP
View on
Amazon

This table covers the Drive Sprocket 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.

Extension Housing Bushing

Brand Part Number Markets Notes Buy
DURA-BOND Fits: 3.8L V6 Supercharged GMT67
🇺🇸 US 🇨🇦 CA
Extension Housing 4T60E/4T65E
View on
Amazon

This table covers the Extension Housing 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.

Extension Housing Gasket

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 8651419
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon

This table covers the gaskets that seal the Extension Housing. 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.

Filter

Economy

Brand Part Number Markets Notes Buy
ATP Popular Fits: 3.8L V6 Supercharged TF161
🇺🇸 US 🇨🇦 CA
OE Replacement
View on
Amazon
CHAMP / LUBER-FINER Fits: 3.8L V6 Supercharged T217
🇺🇸 US 🇨🇦 CA
View on
Amazon
PA CARGO Fits: 3.8L V6 Supercharged 84710E
🇺🇸 US 🇨🇦 CA
4 Speed FWD 4T65E Transmission
View on
Amazon
VARIOUS MFR Fits: 3.8L V6 Supercharged PT1201
🇺🇸 US 🇨🇦 CA
Standard
Fitment notes — VARIOUS MFR PT1201
Standard
Aftermarket Style Gasket
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
ATP Popular Fits: 3.8L V6 Supercharged B393
🇺🇸 US 🇨🇦 CA
Premium ReplacementIncludes Reusable Gasket
View on
Amazon
GM GENUINE Popular Fits: 3.8L V6 Supercharged 24227477
🇺🇸 US 🇨🇦 CA
Includes Seal
Fitment notes — GM GENUINE 24227477
Includes Seal
Trans. Code 4T65-E-HD/MN74 Speedwith Seal, without Gasket
View on
Amazon
WIX Popular Fits: 3.8L V6 Supercharged 58837
🇺🇸 US 🇨🇦 CA
Class: A
View on
Amazon
ATP Fits: 3.8L V6 Supercharged B396
🇺🇸 US 🇨🇦 CA
Premium ReplacementDoes Not Include 3rd Hand Gasket
View on
Amazon
ATP Fits: 3.8L V6 Supercharged B161
🇺🇸 US 🇨🇦 CA
Premium Replacement
View on
Amazon
ATP Fits: 3.8L V6 Supercharged JX156
🇺🇸 US 🇨🇦 CA
In-Line Filter Kit
Fitment notes — ATP JX156
In-Line Filter Kit
GM Quick Connect
View on
Amazon
ATP Fits: 3.8L V6 Supercharged JX157
🇺🇸 US 🇨🇦 CA
In-Line Filter Kit
Fitment notes — ATP JX157
In-Line Filter Kit
GM 3/8 inch flare
View on
Amazon
FVP Fits: 3.8L V6 Supercharged T8837
🇺🇸 US 🇨🇦 CA
View on
Amazon
HASTINGS / BALDWIN Fits: 3.8L V6 Supercharged TF142
🇺🇸 US 🇨🇦 CA
Gasket Not Included
Fitment notes — HASTINGS / BALDWIN TF142
Gasket Not Included
without Gasket
View on
Amazon
HASTINGS / BALDWIN Fits: 3.8L V6 Supercharged TF153
🇺🇸 US 🇨🇦 CA
with Gasket
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 746164
🇺🇸 US 🇨🇦 CA
Does Not Include Gasket
View on
Amazon
RAYBESTOS POWERTRAIN Fits: 3.8L V6 Supercharged 515142
🇺🇸 US 🇨🇦 CA
View on
Amazon
WIX Fits: 3.8L V6 Supercharged 58918
🇺🇸 US 🇨🇦 CA
without Pan Gasket
View on
Amazon

This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.

Filter Seal

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L V6 Supercharged JO100
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 8656613
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed Automatic trans.
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 760008
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E
View on
Amazon

This table covers the seals at the Filter. 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.

Flexplate

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L V6 Supercharged Z609
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EOuter Diameter: 11.915"
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged FRA574
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EOuter Diameter: 11.915"
View on
Amazon

This table covers the flexplates that connect the crankshaft to the torque converter.

Fluid Cooler Line / Hose

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 10409060
🇺🇸 US 🇨🇦 CA
Outlet
View on
Amazon
SUNSONG Fits: 3.8L V6 Supercharged 5801148
🇺🇸 US 🇨🇦 CA
LowerRadiator To Transmission
View on
Amazon
SUNSONG Fits: 3.8L V6 Supercharged 5801122
🇺🇸 US 🇨🇦 CA
Radiator to Transmission (Upper)
View on
Amazon

This table covers the Fluid Cooler Line hoses. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle.

Fluid Cooler Line / Hose Connector

Brand Part Number Markets Notes Buy
DORMAN Popular Fits: 3.8L V6 Supercharged 800619
🇺🇸 US 🇨🇦 CA
9/16" x 18 ThreadRadiator Side
Fitment notes — DORMAN 800619
9/16" x 18 ThreadRadiator SideTransmission Oil Cooler Line Connector 3/8 In. Body Quick Connectorwith Bevel Washer At Cooler Fitting
View on
Amazon
HAYDEN Popular Fits: 3.8L V6 Supercharged 397
🇺🇸 US 🇨🇦 CA
Transmission Line Fitting KitUse On Vehicles with Snap-In Transmission Line Fitting
View on
Amazon
DORMAN Fits: 3.8L V6 Supercharged 800754
🇺🇸 US 🇨🇦 CA
Transmission Line Connector
Fitment notes — DORMAN 800754
Transmission Line Connector
1/4 In. Male to 5/8 In. FemaleTransmission Fluid Cooler Pipe Fitting Inlet to Case
View on
Amazon
DORMAN Fits: 3.8L V6 Supercharged 800605
🇺🇸 US 🇨🇦 CA
Transmission Line Connector
Fitment notes — DORMAN 800605
Transmission Line Connector
Transmission Oil Cooler Line To RadiatorSilver
View on
Amazon
FOUR SEASONS Fits: 3.8L V6 Supercharged 53009
🇺🇸 US 🇨🇦 CA
Transmission Line Fitting KitUse On Vehicles with 5/8"-18 Thread Inverted Flare Fittings
View on
Amazon
FOUR SEASONS Fits: 3.8L V6 Supercharged 53024
🇺🇸 US 🇨🇦 CA
Transmission Line Fitting KitUse On Vehicles with Snap-In Transmission Line Fitting
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 8651654
🇺🇸 US 🇨🇦 CA
End Fitting
Fitment notes — GM GENUINE 8651654
End Fitting
Trans. Code 4T65-E-HD/MN74 SpeedInlet To Case2.93 Ratio Transaxle Final Drive (FR2)1/4-18EXT,5/8-18INT
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 19130039
🇺🇸 US 🇨🇦 CA
End Fitting
Fitment notes — GM GENUINE 19130039
End Fitting
At Radiator5/8
View on
Amazon
HAYDEN Fits: 3.8L V6 Supercharged 390
🇺🇸 US 🇨🇦 CA
Transmission Line Fitting KitUse On Vehicles with 5/8"-18 Thread Inverted Flare Fittings
View on
Amazon

This table covers the harness connectors at the Fluid Cooler Line / Hose. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.

Fluid Cooler Line Clip

Brand Part Number Markets Notes Buy
DORMAN Fits: 3.8L V6 Supercharged 14152
🇺🇸 US 🇨🇦 CA
18 MM Diameter
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24205103
🇺🇸 US 🇨🇦 CA
3/8, 17.4mm OD
View on
Amazon

This table covers the Fluid Cooler Line clips.

Fluid Pan

Brand Part Number Markets Notes Buy
SKP Popular Fits: 3.8L V6 Supercharged SK265814
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E
View on
Amazon
ATP Fits: 3.8L V6 Supercharged 103138
🇺🇸 US 🇨🇦 CA
with 6mm Bolt Holes
View on
Amazon
DORMAN Fits: 3.8L V6 Supercharged 265814
🇺🇸 US 🇨🇦 CA
OE FIX
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24206181
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
Fitment notes — GM GENUINE 24206181
Trans. code 4T65-E-HD/MN74 speedUSES 6MM BOLTS
View on
Amazon
SPECTRA PREMIUM Fits: 3.8L V6 Supercharged TP0814
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the pans that hold automatic-transmission fluid.

Fluid Pan Gasket

Brand Part Number Markets Notes Buy
FEL-PRO Popular Fits: 3.8L V6 Supercharged TOS18717
🇺🇸 US 🇨🇦 CA
View on
Amazon
GM GENUINE Popular Fits: 3.8L V6 Supercharged 24206182
🇺🇸 US 🇨🇦 CA
6mm pan bolt
Fitment notes — GM GENUINE 24206182
6mm pan bolt
Trans. Code 4T65-E-HD/MN74 SpeedUsed with 6MM Pan Bolts
View on
Amazon
ATP Fits: 3.8L V6 Supercharged JG108
🇺🇸 US 🇨🇦 CA
Replacement GasketAftermarket Style
View on
Amazon
ATP Fits: 3.8L V6 Supercharged JG143
🇺🇸 US 🇨🇦 CA
Reusable, 6mm bolt holes, 10mm headOE Style
View on
Amazon
MAHLE / CLEVITE Fits: 3.8L V6 Supercharged W32865
🇺🇸 US 🇨🇦 CA
Automatic Transmission Oil Pan GasketMolded Rubber
Fitment notes — MAHLE / CLEVITE W32865
Automatic Transmission Oil Pan GasketMolded Rubber
Side Cover Gasket 17 Bolt Holes
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 749017
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-ECork & Rubber
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 749527
🇺🇸 US 🇨🇦 CA
8mm holes13mm heads
Fitment notes — PIONEER 749527
8mm holes13mm headsReusableOE Type
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 749522
🇺🇸 US 🇨🇦 CA
Reusable, 6mm bolt holes, 10mm headOE Style
View on
Amazon
VICTOR REINZ Fits: 3.8L V6 Supercharged 711497100
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E20 Bolt
Fitment notes — VICTOR REINZ 711497100
Trans. code 4T65-E20 Boltwith 6mm Bolt Hole(s)
View on
Amazon

This table covers the gaskets that seal the Fluid Pan. 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.

Fluid Pan Magnet

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 29535617
🇺🇸 US 🇨🇦 CA
Length: 1.8 In
Fitment notes — GM GENUINE 29535617
Length: 1.8 In
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon

This table covers the Fluid Pan magnets.

Fluid Pump Cover Bolt

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24210075
🇺🇸 US 🇨🇦 CA
Trans. Code 4T65-E-HD/MN74 Speed
Fitment notes — GM GENUINE 24210075
Trans. Code 4T65-E-HD/MN74 SpeedM6X1.0X95.0
View on
Amazon

This table covers the Fluid Pump Cover bolts.

Fluid Pump Seal

Brand Part Number Markets Notes Buy
SKF Fits: 3.8L V6 Supercharged 17849
🇺🇸 US 🇨🇦 CA
Front
View on
Amazon

This table covers the seals at the Fluid Pump. 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.

Fluid Pump Shaft

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24209284
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon

This table covers the Fluid Pump shafts.

Fluid Temperature Sensor

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 12129691
🇺🇸 US 🇨🇦 CA
Mates with Connector # 12085535
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 3.8L V6 Supercharged TX220
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the Fluid temperature sensors. Typical signs include hard cold starts, a fan that never comes on, or a gauge that disagrees with the scan tool. A sensor that reads open or shorted is usually the part; an implausible-but-smooth reading can be wiring.

Governor / Modulator

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L V6 Supercharged JX70
🇺🇸 US 🇨🇦 CA
Includes: (1) Hose
Fitment notes — ATP JX70
Includes: (1) Hose
Trans. code 4T65-E2nd Designwith TransAdjustable 12-19.5 - EDA 1.70 - Dual Red Stripe - without EGR
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 747017
🇺🇸 US 🇨🇦 CA
Includes (1) Hose
Fitment notes — PIONEER 747017
Includes (1) Hose
Trans. code 4T65-E2nd Designwith TransAdjustable 12-19.5EDA 1.70Dual Red Stripewithout EGR
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 3.8L V6 Supercharged TM57
🇺🇸 US 🇨🇦 CA
Direct OE ReplacementBrass
Fitment notes — STANDARD MOTOR PRODUCTS TM57
Direct OE ReplacementBrassNumber of Hose Connectors: 2
View on
Amazon

This table covers the governors and modulators that control transmission shift pressure.

Manual Shaft Seal

Brand Part Number Markets Notes Buy
NATIONAL Popular Fits: 3.8L V6 Supercharged 8792S
🇺🇸 US 🇨🇦 CA
General Motors trans.
View on
Amazon
BCA Fits: 3.8L V6 Supercharged NS8792S
🇺🇸 US 🇨🇦 CA
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 8644709
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
Fitment notes — GM GENUINE 8644709
Trans. code 4T65-E-HD/MN74 speedwithout PTFE LUBRICANT APPLIED TO SEAL
View on
Amazon
TIMKEN Fits: 3.8L V6 Supercharged 8792S
🇺🇸 US 🇨🇦 CA
View on
Amazon
WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged WS8792S
🇺🇸 US 🇨🇦 CA
General Motors trans.
View on
Amazon

This table covers the seals at the Manual Shaft. 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.

Output Shaft Repair Sleeve

Brand Part Number Markets Notes Buy
NATIONAL Popular Fits: 3.8L V6 Supercharged 99139
🇺🇸 US 🇨🇦 CA
Fits LeftGeneral Motors trans.or Right
Fitment notes — NATIONAL 99139
Fits:
LeftGeneral Motors trans.or RightGeneral Motors trans.
View on
Amazon
BCA Fits: 3.8L V6 Supercharged NS99139
🇺🇸 US 🇨🇦 CA
Fits Right
Fitment notes — BCA NS99139
Fits:
Right
or:
Left
View on
Amazon
SKF Fits: 3.8L V6 Supercharged 99138
🇺🇸 US 🇨🇦 CA
Shaft Diameter: 1.374 In
Fitment notes — SKF 99138
Shaft Diameter: 1.374 In
Right
View on
Amazon
TIMKEN Fits: 3.8L V6 Supercharged KWK99139
🇺🇸 US 🇨🇦 CA
Kwik-Sleeve
Fitment notes — TIMKEN KWK99139
Kwik-Sleeve
Fits:
Right
or:
Left
View on
Amazon
WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged WS99139
🇺🇸 US 🇨🇦 CA
Fits LeftGeneral Motors trans.or Right
Fitment notes — WJB / INMOTION PARTS WS99139
Fits:
LeftGeneral Motors trans.or RightGeneral Motors trans.
View on
Amazon

This table covers the wear sleeves used to restore a Output Shaft seal surface.

Output Shaft Seal

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 3.8L V6 Supercharged 3543
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO 3543
Gold
Right
View on
Amazon
GM GENUINE Popular Fits: 3.8L V6 Supercharged 24202835
🇺🇸 US 🇨🇦 CA
Right
View on
Amazon
NATIONAL Popular Fits: 3.8L V6 Supercharged 100165
🇺🇸 US 🇨🇦 CA
LeftGeneral Motors trans.
View on
Amazon
BCA Fits: 3.8L V6 Supercharged NS3543
🇺🇸 US 🇨🇦 CA
Right
View on
Amazon
NATIONAL Fits: 3.8L V6 Supercharged 3543
🇺🇸 US 🇨🇦 CA
RightGeneral Motors trans.
View on
Amazon
SCHAEFFLER Fits: 3.8L V6 Supercharged SS2418
🇺🇸 US 🇨🇦 CA
Left15.265 mm Width
Fitment notes — SCHAEFFLER SS2418
Left15.265 mm Width57.328 mm Outside DiameterNitrile35.001 mm Shaft Diameter
View on
Amazon
SCHAEFFLER Fits: 3.8L V6 Supercharged SS2421
🇺🇸 US 🇨🇦 CA
Right14.681 mm Width
Fitment notes — SCHAEFFLER SS2421
Right14.681 mm Width55.016 mm Outside Diameter34.925 mm Shaft Diameter
View on
Amazon
SKF Fits: 3.8L V6 Supercharged 13735
🇺🇸 US 🇨🇦 CA
Left
View on
Amazon
SKF Fits: 3.8L V6 Supercharged 13750
🇺🇸 US 🇨🇦 CA
Right
View on
Amazon
TIMKEN Fits: 3.8L V6 Supercharged 100165
🇺🇸 US 🇨🇦 CA
LeftYellow
View on
Amazon
TIMKEN Fits: 3.8L V6 Supercharged 3543
🇺🇸 US 🇨🇦 CA
RightGreen
View on
Amazon
WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged WS100165
🇺🇸 US 🇨🇦 CA
Fits LeftYellow
Fitment notes — WJB / INMOTION PARTS WS100165
Fits:
LeftYellow
or:
LeftGeneral Motors trans.
View on
Amazon
WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged WS3543
🇺🇸 US 🇨🇦 CA
RightGeneral Motors trans.
View on
Amazon

This table covers the seals at the Output Shaft. 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.

Parking Pawl

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24237506
🇺🇸 US 🇨🇦 CA
Actuating Rod
Fitment notes — GM GENUINE 24237506
Actuating Rod
Trans. Code 4T65-E-HD/MN74 SpeedAttaches To Transmission
View on
Amazon

This table covers the parking pawls that lock the transmission in Park.

Pressure Control (EPC) Solenoid

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 10478146
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon
PA CARGO Fits: 3.8L V6 Supercharged 33946
🇺🇸 US 🇨🇦 CA
General Motors trans.Trans. code 4T65-E
View on
Amazon
ROSTRA Fits: 3.8L V6 Supercharged 520367
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EEPC Pulse Width Modulation Solenoid
View on
Amazon

This table covers the Pressure Control (EPC) solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.

Pressure Switch Manifold

Brand Part Number Markets Notes Buy
PIONEER Fits: 3.8L V6 Supercharged 772012
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EManifold pressure
View on
Amazon
ROSTRA Fits: 3.8L V6 Supercharged 501018
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E1 Prong Type
View on
Amazon
ROSTRA Fits: 3.8L V6 Supercharged 501004
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 3.8L V6 Supercharged PSA104
🇺🇸 US 🇨🇦 CA
Transmission Pressure Switch Assembly
View on
Amazon

This table covers the Pressure Switch 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.

Reaction Carrier Thrust Bearing

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 8646504
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
Fitment notes — GM GENUINE 8646504
Trans. code 4T65-E-HD/MN74 speed82.0MM
View on
Amazon

This table covers the Reaction Carrier Thrust 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.

Rebuild Kit

Banner Kit (Overhaul Kit + Friction Clutch Plates)

Brand Part Number Markets Notes Buy
PA CARGO Fits: 3.8L V6 Supercharged DK8400PS
🇺🇸 US 🇨🇦 CA
Banner Kit
Fitment notes — PA CARGO DK8400PS
Banner Kit
Trans. code 4T65E
View on
Amazon
PA CARGO Fits: 3.8L V6 Supercharged DK8400MS
🇺🇸 US 🇨🇦 CA
Banner Kit
Fitment notes — PA CARGO DK8400MS
Banner Kit
Fits:
Trans. code 4T65E
or:
Trans. code LA4AEL
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 751137
🇺🇸 US 🇨🇦 CA
Banner KitIncludes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings, and Friction clutch plates
Fitment notes — PIONEER 751137
Banner KitIncludes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings, and Friction clutch platesOverhaul Kit
Trans. code 4T65-E
View on
Amazon

Deluxe Kit (Master Kit + Filter, Band & Common Bushings)

Brand Part Number Markets Notes Buy
PIONEER Fits: 3.8L V6 Supercharged 753078
🇺🇸 US 🇨🇦 CA
Plus Kit
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 753023
🇺🇸 US 🇨🇦 CA
Plus Kit
View on
Amazon

Master Kit (Overhaul Kit + Friction & Steel Clutch Plates)

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L V6 Supercharged JMS27
🇺🇸 US 🇨🇦 CA
Master Kit PlusContains Friction and Steel Clutch Plates, Gaskets, Seals, O'Rings, Sealing Rings, PLUS Oil Filter, Vacuum Modulator, Front Pump Bushing, and Extension Housing Bushing
View on
Amazon

Overhaul Kit (Gaskets, Seals, O-Rings & Sealing Rings)

Brand Part Number Markets Notes Buy
PA CARGO Popular Fits: 3.8L V6 Supercharged K84900M
🇺🇸 US 🇨🇦 CA
Overhaul Kit
Fitment notes — PA CARGO K84900M
Overhaul Kit
Fits:
Trans. code 4T65E
or:
Trans. code LA4AEL
View on
Amazon
TRANSTEC Popular Fits: 3.8L V6 Supercharged 81000144
🇺🇸 US 🇨🇦 CA
without PistonsMolded Pan Gasket
Fitment notes — TRANSTEC 81000144
without PistonsMolded Pan Gasketwith Quad & Plastic Rings
GS4T65E4 Speed
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 750240
🇺🇸 US 🇨🇦 CA
Overhaul KitIncludes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings, and Pistons
Fitment notes — PIONEER 750240
Overhaul KitIncludes: All paper gaskets, Pan gasket, Rubber O rings, Rubber Lip seals, metal clad seals, sealing rings, and Pistons
Trans. code 4T65-E
View on
Amazon

This table covers the rebuild kits for this assembly.

Retaining Ring

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24204373
🇺🇸 US 🇨🇦 CA
Trans. Code 4T65-E-HD/MN74 speed Automatic trans.
Fitment notes — GM GENUINE 24204373
Trans. Code 4T65-E-HD/MN74 speed Automatic trans.Manual Servo Piston Pin Retaining Ring
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24211765
🇺🇸 US 🇨🇦 CA
2-1Trans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24211765
2-1Trans.Code 4T65-E-HD/MN74 speed Automatic trans.Manual Servo Piston Pin Retaining Ring
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 8631028
🇺🇸 US 🇨🇦 CA
Direct Clutch Spring Retaining Ring
Fitment notes — GM GENUINE 8631028
Direct Clutch Spring Retaining Ring
Trans. Code 4T65-E-HD/MN74 speed Automatic trans.Input Clutch Backing Plate Retaining Ring
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24205145
🇺🇸 US 🇨🇦 CA
Trans. Code 4T65-E-HD/MN74 speed Automatic trans.
Fitment notes — GM GENUINE 24205145
Trans. Code 4T65-E-HD/MN74 speed Automatic trans.Output ShaftOD is 27.25MM Round Ring DesignOutput Shaft Retaining Ring
View on
Amazon

This table covers the Retaining rings.

Servo Cover Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24204374
🇺🇸 US 🇨🇦 CA
ForwardTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24204374
ForwardTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24235894
🇺🇸 US 🇨🇦 CA
ReverseTrans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24235894
ReverseTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon

This table covers the seals at the Servo 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.

Servo Piston Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24210904
🇺🇸 US 🇨🇦 CA
Rim Shape: Square
Fitment notes — GM GENUINE 24210904
Rim Shape: Square
2-1Trans.Code 4T65-E-HD/MN74 SpeedLipManual Servo Piston Seal
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 8651541
🇺🇸 US 🇨🇦 CA
Rim Shape: Round
Fitment notes — GM GENUINE 8651541
Rim Shape: Round
2-1Trans.Code 4T65-E-HD/MN74 SpeedManual Servo Piston Seal
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24208959
🇺🇸 US 🇨🇦 CA
Fits Trans. code 4T65-E-HD/MN74 speedor Reverse
Fitment notes — GM GENUINE 24208959
Fits:
Trans. code 4T65-E-HD/MN74 speedor ReverseTrans.Code 4T65-E-HD/MN74 Speed
View on
Amazon

This table covers the seals at the Servo Piston. 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.

Shift Cable

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L V6 Supercharged Y1297
🇺🇸 US 🇨🇦 CA
Length: 113.74"with Floor Console
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged CA1253
🇺🇸 US 🇨🇦 CA
Length: 113.74"with Floor Console
View on
Amazon

This table covers the Shift cables. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early.

Shift Improvement Kit

Brand Part Number Markets Notes Buy
PIONEER Fits: 3.8L V6 Supercharged 765025
🇺🇸 US 🇨🇦 CA
Valve Body Gasket Kit
Fitment notes — PIONEER 765025
Valve Body Gasket Kit
Trans. code 4T65-E
View on
Amazon
SONNAX Fits: 3.8L V6 Supercharged SC4T65E
🇺🇸 US 🇨🇦 CA
Sure Cure® Kit
Fitment notes — SONNAX SC4T65E
Sure Cure® Kit
Trans. Code: 4T65-E
View on
Amazon
TRANSGO Fits: 3.8L V6 Supercharged SK4T65E
🇺🇸 US 🇨🇦 CA
Shift KitFor 4T65E Transmissions
View on
Amazon
TRANSGO Fits: 3.8L V6 Supercharged SK4T60EJR
🇺🇸 US 🇨🇦 CA
Shift KitFor 4T60E Transmissions
Fitment notes — TRANSGO SK4T60EJR
Shift KitFor 4T60E Transmissions
Trans. code 4T65-E
View on
Amazon

This table covers the Shift Improvement kits.

Shift Shaft Repair Sleeve

Brand Part Number Markets Notes Buy
SCHAEFFLER Fits: 3.8L V6 Supercharged SR3451
🇺🇸 US 🇨🇦 CA
View on
Amazon
SKF Fits: 3.8L V6 Supercharged 480050
🇺🇸 US 🇨🇦 CA
Speedi-Sleeve
View on
Amazon
SKF Fits: 3.8L V6 Supercharged 99050
🇺🇸 US 🇨🇦 CA
Shaft Diameter: 0.500 In
View on
Amazon

This table covers the wear sleeves used to restore a Shift Shaft seal surface.

Shift Shaft Seal

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 3.8L V6 Supercharged 8792S
🇺🇸 US 🇨🇦 CA
Gold
View on
Amazon
ATP Fits: 3.8L V6 Supercharged XO10
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EManual Lever Seal
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 759018
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EManual Lever Seal
View on
Amazon
SCHAEFFLER Fits: 3.8L V6 Supercharged SS2114
🇺🇸 US 🇨🇦 CA
4.75 mm WidthNitrile
Fitment notes — SCHAEFFLER SS2114
4.75 mm WidthNitrile12.7 mm Shaft Diameter
View on
Amazon
SKF Fits: 3.8L V6 Supercharged 4912
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the seals at the Shift Shaft. 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.

Shift Solenoid

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 3.8L V6 Supercharged 2141766
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO 2141766
Gold
Shift Control Solenoid
View on
Amazon
GM GENUINE Popular Fits: 3.8L V6 Supercharged 24219819
🇺🇸 US 🇨🇦 CA
Fits 1-2, 3-4Trans.Code 4T65-E-HD/MN7
Fitment notes — GM GENUINE 24219819
Fits:
1-2, 3-4Trans.Code 4T65-E-HD/MN74 Speedor 2-3Trans.Code 4T65-E-HD/MN74 Speed
View on
Amazon
STANDARD MOTOR PRODUCTS Popular Fits: 3.8L V6 Supercharged TCS17
🇺🇸 US 🇨🇦 CA
1-2, 3-4 Shift Solenoid
View on
Amazon
STANDARD MOTOR PRODUCTS Popular Fits: 3.8L V6 Supercharged TCS39
🇺🇸 US 🇨🇦 CA
TCC/Pulse Width Modulation Solenoid
View on
Amazon
ACDELCO Fits: 3.8L V6 Supercharged 2141894
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO 2141894
Gold
1-2, 3-4 Shift Solenoid
View on
Amazon
ATP Fits: 3.8L V6 Supercharged JE54
🇺🇸 US 🇨🇦 CA
View on
Amazon
ATP Fits: 3.8L V6 Supercharged JE55
🇺🇸 US 🇨🇦 CA
View on
Amazon
BWD/NIEHOFF Fits: 3.8L V6 Supercharged S9857
🇺🇸 US 🇨🇦 CA
Automatic Transmission SolenoidCONTROL SOLENOID
View on
Amazon
HOLSTEIN Fits: 3.8L V6 Supercharged 2TCS0001
🇺🇸 US 🇨🇦 CA
1-2, 3-4 Shift Solenoid
View on
Amazon
PA CARGO Fits: 3.8L V6 Supercharged 84955
🇺🇸 US 🇨🇦 CA
General Motors trans.Trans. code 4T65-E
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 772280
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E1-2, 3-4 Shift
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 772284
🇺🇸 US 🇨🇦 CA
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 771061
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 772286
🇺🇸 US 🇨🇦 CA
View on
Amazon
ROSTRA Fits: 3.8L V6 Supercharged 520357
🇺🇸 US 🇨🇦 CA
Straight White Connector
Fitment notes — ROSTRA 520357
Straight White Connector
Trans. code 4T65-EShift A Solenoid On/Off
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 3.8L V6 Supercharged TCS44
🇺🇸 US 🇨🇦 CA
Shift Control Solenoid
View on
Amazon
VEMO Fits: 3.8L V6 Supercharged V51770007
🇺🇸 US 🇨🇦 CA
Fits Body code WB69
Fitment notes — VEMO V51770007
Fits:
Body code WB69
or:
Body code WF69Trans. code 4T65-E-HD/MN7
View on
Amazon
VEMO Fits: 3.8L V6 Supercharged V51770004
🇺🇸 US 🇨🇦 CA
Plug (Connector): 2 Pins
Fitment notes — VEMO V51770004
Plug (Connector): 2 Pins
Valve 1-2, 3-4
View on
Amazon

This table covers the Shift solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.

Side Cover Seal

Brand Part Number Markets Notes Buy
FEL-PRO Fits: 3.8L V6 Supercharged TOS18723
🇺🇸 US 🇨🇦 CA
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24206959
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon
VICTOR REINZ Fits: 3.8L V6 Supercharged 711496100
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E17 Bolt
View on
Amazon

This table covers the seals at the Side 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.

Stator Support Shaft Bushing

Brand Part Number Markets Notes Buy
ATP Fits: 3.8L V6 Supercharged CB31
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EPosition: Drive Sprocket Support - Stator Support - Front - Small Input Shafts
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 755081
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EInner Diameter: 0.9"
Fitment notes — PIONEER 755081
Trans. code 4T65-EInner Diameter: 0.9"Drive Sprocket SupportStator SupportFrontSmall Input Shafts
View on
Amazon

This table covers the Stator Support Shaft 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.

Sun Gear Bushing

Brand Part Number Markets Notes Buy
DURA-BOND Fits: 3.8L V6 Supercharged GMT61
🇺🇸 US 🇨🇦 CA
Rear Sun Gear (Rear)
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 755057
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EInternal Reaction Sun Gear
Fitment notes — PIONEER 755057
Trans. code 4T65-EInternal Reaction Sun GearInput Carrier
View on
Amazon

This table covers the Sun Gear 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.

Torque Converter

Brand Part Number Markets Notes Buy
DYNAMIC REMANUFACTURING Fits: 3.8L V6 Supercharged DGM111
🇺🇸 US 🇨🇦 CA
Reman.
Fitment notes — DYNAMIC REMANUFACTURING DGM111
Reman.
Trans. code 4T65-E
View on
Amazon
TC REMANUFACTURING Fits: 3.8L V6 Supercharged B210006
🇺🇸 US
Trans. code 4T65-EConverter Codes: 12491980, 24206447, 24213729, 24215416, 24216222, 24216232, 24230004, 24230005, 24230006, JZFM
View on
Amazon
TC REMANUFACTURING Fits: 3.8L V6 Supercharged B21JSFM
🇺🇸 US
Converter Codes: 12491978, 24207239, 24207329, 24207734, 24208860, 24216224, 24216226, 24230001, Green Dot, JSFM0001 Converter Code
View on
Amazon
TC REMANUFACTURING Fits: 3.8L V6 Supercharged B21JTFM
🇺🇸 US 🇨🇦 CA
Reman.
Fitment notes — TC REMANUFACTURING B21JTFM
Reman.
Fits:
Trans. code 4T65-E-HD/MN7General Motors trans.or Trans. code 4T65-E1630 Stall, Woven ClutchGeneral Motors trans.
View on
Amazon

This table covers the Torque converters. Typical signs include a sulfur smell, rattling substrate, or an efficiency code. Confirm CARB vs Federal certification in the notes before ordering.

Torque Converter Bolt

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 11588468
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
Fitment notes — GM GENUINE 11588468
Trans. code 4T65-E-HD/MN74 speedM10X1.5X15,10.9
View on
Amazon

This table covers the Torque Converter bolts.

Torque Converter Clutch Solenoid

Brand Part Number Markets Notes Buy
PA CARGO Popular Fits: 3.8L V6 Supercharged 77942
🇺🇸 US 🇨🇦 CA
General Motors trans.Trans. code 4T65-E
View on
Amazon
ATP Fits: 3.8L V6 Supercharged CE2
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EA & B Shift - Lock-Up, Not Pulse-Width-Modulated - Shift 1-2, 3-4
Fitment notes — ATP CE2
Trans. code 4T65-EA & B Shift - Lock-Up, Not Pulse-Width-Modulated - Shift 1-2, 3-41-2 Required
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 771023
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EA & B Shift
Fitment notes — PIONEER 771023
Trans. code 4T65-EA & B ShiftLock-Up, Not Pulse-Width-ModulatedShift 1-2, 3-4
View on
Amazon
ROSTRA Fits: 3.8L V6 Supercharged 520240
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-ETCC Pulse Width Modulation Solenoid
View on
Amazon
WELLS Fits: 3.8L V6 Supercharged 2N1217
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EPulse Width Modulator Solenoid
View on
Amazon

This table covers the Torque Converter Clutch solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.

Torque Converter Pulse Width Modulation (PWM) Solenoid

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24227747
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon

This table covers the Torque Converter Pulse Width Modulation (PWM) solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.

Torque Converter Shaft Seal

Brand Part Number Markets Notes Buy
GM GENUINE Popular Fits: 3.8L V6 Supercharged 8685515
🇺🇸 US 🇨🇦 CA
Red
Fitment notes — GM GENUINE 8685515
Red
Trans. Code 4T65-E-HD/MN74 SpeedHelix
View on
Amazon
NATIONAL Popular Fits: 3.8L V6 Supercharged 4918
🇺🇸 US 🇨🇦 CA
Fits Trans. code 4T65-E-HD/MN7General Motors trans.or Trans. code 4T65-E
Fitment notes — NATIONAL 4918
Fits:
Trans. code 4T65-E-HD/MN7General Motors trans.or Trans. code 4T65-EGeneral Motors trans.with Flange
View on
Amazon
ATP Fits: 3.8L V6 Supercharged XO4
🇺🇸 US 🇨🇦 CA
Helix
Fitment notes — ATP XO4
Helix
Trans. code 4T65-E
View on
Amazon
BCA Fits: 3.8L V6 Supercharged NS4918
🇺🇸 US 🇨🇦 CA
with Flanged Design
View on
Amazon
BCA Fits: 3.8L V6 Supercharged NS4072N
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-Ewith Non-Flanged Design
View on
Amazon
NATIONAL Fits: 3.8L V6 Supercharged 4072N
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EGeneral Motors trans.
Fitment notes — NATIONAL 4072N
Trans. code 4T65-EGeneral Motors trans.Non-Flanged Style
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 759027
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E
View on
Amazon
TIMKEN Fits: 3.8L V6 Supercharged 4072N
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E
View on
Amazon
WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged WS4072N
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-EGeneral Motors trans.
Fitment notes — WJB / INMOTION PARTS WS4072N
Trans. code 4T65-EGeneral Motors trans.Non-Flanged Style
View on
Amazon
WJB / INMOTION PARTS Fits: 3.8L V6 Supercharged WS4918
🇺🇸 US 🇨🇦 CA
Fits Trans. code 4T65-E-HD/MN7General Motors trans.or Trans. code 4T65-E
Fitment notes — WJB / INMOTION PARTS WS4918
Fits:
Trans. code 4T65-E-HD/MN7General Motors trans.or Trans. code 4T65-EGeneral Motors trans.with Flange
View on
Amazon

This table covers the seals at the Torque Converter Shaft. 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.

Transmission Fluid

ATF +4

Brand Part Number Markets Notes Buy
PENTOSIN Fits: 3.8L V6 Supercharged 1058112
🇺🇸 US 🇨🇦 CA
ATF441 Liter
View on
Amazon
PENTOSIN Fits: 3.8L V6 Supercharged 1058212
🇺🇸 US 🇨🇦 CA
ATF445 Liters
View on
Amazon

Dexron

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 3.8L V6 Supercharged 109243
🇺🇸 US
Container Type: Plastic Container
View on
Amazon
VALVOLINE Popular Fits: 3.8L V6 Supercharged 798153
🇺🇸 US 🇨🇦 CA
Dexron III / Mercon ATF1 Quart
Fitment notes — VALVOLINE 798153
Dexron III / Mercon ATF1 Quart
Product Not Applicable For California
View on
Amazon
MOBIL Fits: 3.8L V6 Supercharged 126411
🇺🇸 US 🇨🇦 CA
Dexron-VI ATF
Fitment notes — MOBIL 126411
Dexron-VI ATF
Trans. code 4T65-E
View on
Amazon
VALVOLINE Fits: 3.8L V6 Supercharged 822405
🇺🇸 US 🇨🇦 CA
Dexron VI/Mercon LV ATF1 Quart
Fitment notes — VALVOLINE 822405
Dexron VI/Mercon LV ATF1 Quart
Product Not Applicable For California
View on
Amazon
VALVOLINE Fits: 3.8L V6 Supercharged 773636
🇺🇸 US 🇨🇦 CA
Dexron III / Mercon ATF1 Gallon
Fitment notes — VALVOLINE 773636
Dexron III / Mercon ATF1 Gallon
Product Not Applicable For California
View on
Amazon
VALVOLINE Fits: 3.8L V6 Supercharged 883572
🇺🇸 US 🇨🇦 CA
Dexron VI/Mercon LV ATF1 Gallon
Fitment notes — VALVOLINE 883572
Dexron VI/Mercon LV ATF1 Gallon
Product Not Applicable For California
View on
Amazon
VALVOLINE Fits: 3.8L V6 Supercharged VV349
🇺🇸 US 🇨🇦 CA
Dexron III / Mercon ATF5 Gallon Pail
Fitment notes — VALVOLINE VV349
Dexron III / Mercon ATF5 Gallon Pail
Product Not Applicable For California
View on
Amazon

Mercon

Brand Part Number Markets Notes Buy
VALVOLINE Popular Fits: 3.8L V6 Supercharged 822345
🇺🇸 US 🇨🇦 CA
Mercon V ATF1 Quart
Fitment notes — VALVOLINE 822345
Mercon V ATF1 Quart
Product Not Applicable For California
View on
Amazon

Multi-Vehicle

Brand Part Number Markets Notes Buy
MOBIL Popular Fits: 3.8L V6 Supercharged 126505
🇺🇸 US 🇨🇦 CA
Multi-Vehicle ATF
Fitment notes — MOBIL 126505
Multi-Vehicle ATF
Trans. code 4T65-E
View on
Amazon
VALVOLINE Popular Fits: 3.8L V6 Supercharged VV3246
🇺🇸 US 🇨🇦 CA
Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart
Fitment notes — VALVOLINE VV3246
Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 QuartDEXRON VI, MERCON LV, DEX/MERC
Product Not Applicable For California
View on
Amazon
VALVOLINE Popular Fits: 3.8L V6 Supercharged 773775
🇺🇸 US 🇨🇦 CA
Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon
Fitment notes — VALVOLINE 773775
Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon
Product Not Applicable For California
View on
Amazon
ATP Fits: 3.8L V6 Supercharged AT216
🇺🇸 US 🇨🇦 CA
Synthetic Multi-Vehicle Automatic Transmission Fluid1 Quart
View on
Amazon
LIQUI MOLY Fits: 3.8L V6 Supercharged 20018
🇺🇸 US 🇨🇦 CA
Top Tec ATF 12001 Liter
View on
Amazon
LIQUI MOLY Fits: 3.8L V6 Supercharged 20020
🇺🇸 US 🇨🇦 CA
Top Tec ATF 12005 Liter
View on
Amazon
LIQUI MOLY Fits: 3.8L V6 Supercharged 20022
🇺🇸 US 🇨🇦 CA
Top Tec ATF 120020 Liter
View on
Amazon
LUBEGARD Fits: 3.8L V6 Supercharged 69032
🇺🇸 US 🇨🇦 CA
1 QuartComplete Full Synthetic ATF Fluid
View on
Amazon
VALVOLINE Fits: 3.8L V6 Supercharged 855459
🇺🇸 US 🇨🇦 CA
Multi-Vehicle Transfer Case Fluid1 Quart
Fitment notes — VALVOLINE 855459
Multi-Vehicle Transfer Case Fluid1 Quart
Product Not Applicable For California
View on
Amazon
VALVOLINE Fits: 3.8L V6 Supercharged 881051
🇺🇸 US 🇨🇦 CA
Maxlife Multi-Vehicle Full Synthetic ATF5 Gallon Bay Box
Fitment notes — VALVOLINE 881051
Maxlife Multi-Vehicle Full Synthetic ATF5 Gallon Bay Box
Product Not Applicable For California
View on
Amazon

Type III (H)

Brand Part Number Markets Notes Buy
ACDELCO Fits: 3.8L V6 Supercharged 109240
🇺🇸 US
1 Quart
View on
Amazon
ACDELCO Fits: 3.8L V6 Supercharged 109241
🇺🇸 US
1 Gallon
View on
Amazon

Type T-4 (Type T-IV)

Brand Part Number Markets Notes Buy
IDEMITSU Fits: 3.8L V6 Supercharged 30040093750
🇺🇸 US
ATF Type TLS1 Quart
View on
Amazon
IDEMITSU Fits: 3.8L V6 Supercharged 30040093953
🇺🇸 US
ATF Type TLS5 Quart
View on
Amazon

ZF Fluid

Brand Part Number Markets Notes Buy
PENTOSIN Fits: 3.8L V6 Supercharged 1058106
🇺🇸 US 🇨🇦 CA
ATF61 Liter
View on
Amazon
PENTOSIN Fits: 3.8L V6 Supercharged 1058207
🇺🇸 US 🇨🇦 CA
5 LitersATF or ATF6
View on
Amazon
PENTOSIN Fits: 3.8L V6 Supercharged 1058306
🇺🇸 US 🇨🇦 CA
ATF620 Liters or 1 Liter
View on
Amazon
Brand Part Number Markets Notes Buy
VALVOLINE Fits: 3.8L V6 Supercharged 899179
🇺🇸 US 🇨🇦 CA
Extended Protection Full Synthetic ATF1 Quart
Fitment notes — VALVOLINE 899179
Extended Protection Full Synthetic ATF1 Quart
Product Not Applicable For California
View on
Amazon

This table covers the automatic-transmission fluids specified for this gearbox. Typical signs include harsh or delayed shifts, fluid that smells burnt, or a shudder at light throttle. Use exactly the specification in the notes. Automatic transmissions are unforgiving of the wrong fluid.

Transmission Fluid Additive

Brand Part Number Markets Notes Buy
LUBEGARD Popular Fits: 3.8L V6 Supercharged 19610
🇺🇸 US 🇨🇦 CA
Instant Shudder Fixx2 oz
View on
Amazon
LUBEGARD Popular Fits: 3.8L V6 Supercharged 60902
🇺🇸 US 🇨🇦 CA
Automatic Transmission Fluid Protectant10 oz
View on
Amazon
LUBEGARD Fits: 3.8L V6 Supercharged 19689
🇺🇸 US 🇨🇦 CA
Instant Shudder Fixx2 oz
View on
Amazon
LUBEGARD Fits: 3.8L V6 Supercharged 63010
🇺🇸 US 🇨🇦 CA
Platinum Universal ATF Protectant10 oz
Fitment notes — LUBEGARD 63010
Platinum Universal ATF Protectant10 oz
Use with OEM Recommended ATF or as OEM fluid Alternative.
View on
Amazon
LUBEGARD Fits: 3.8L V6 Supercharged 63016
🇺🇸 US 🇨🇦 CA
Platinum Universal ATF Protectant15 oz
Fitment notes — LUBEGARD 63016
Platinum Universal ATF Protectant15 oz
Use with OEM Recommended ATF or as OEM fluid Alternative.
View on
Amazon
LUBEGARD Fits: 3.8L V6 Supercharged 63032
🇺🇸 US 🇨🇦 CA
Platinum Universal ATF Protectant32 oz
Fitment notes — LUBEGARD 63032
Platinum Universal ATF Protectant32 oz
Use with OEM Recommended ATF or as OEM fluid Alternative.
View on
Amazon

This table covers the conditioners and additives used with this transmission fluid.

Transmission Mount

Economy

Brand Part Number Markets Notes Buy
SKP Fits: 3.8L V6 Supercharged SKMA2818
🇺🇸 US 🇨🇦 CA
Left Lower
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
DEA / MARMON RIDE CONTROL Popular Fits: 3.8L V6 Supercharged A2818
🇺🇸 US 🇨🇦 CA
View on
Amazon
WESTAR Popular Fits: 3.8L V6 Supercharged EM2818
🇺🇸 US 🇨🇦 CA
View on
Amazon
ANCHOR Fits: 3.8L V6 Supercharged 2818
🇺🇸 US 🇨🇦 CA
Left LowerRubber
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 22146688
🇺🇸 US 🇨🇦 CA
WHITE
View on
Amazon
PIONEER Fits: 3.8L V6 Supercharged 621035
🇺🇸 US 🇨🇦 CA
View on
Amazon
WESTAR Fits: 3.8L V6 Supercharged EM2818G
🇺🇸 US 🇨🇦 CA
Gold Line
View on
Amazon

This table covers the mounts that hold the transmission 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.

Turbine Shaft Fluid Seal Ring

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 8643058
🇺🇸 US 🇨🇦 CA
Trans. Code 4T65-E-HD/MN74 Speed
Fitment notes — GM GENUINE 8643058
Trans. Code 4T65-E-HD/MN74 SpeedInner
View on
Amazon
GM GENUINE Fits: 3.8L V6 Supercharged 24208978
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
Fitment notes — GM GENUINE 24208978
Trans. code 4T65-E-HD/MN74 speedOUTEROTR
View on
Amazon

This table covers the Turbine Shaft Fluid Seal rings.

Turbine Shaft Seal

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 8662686
🇺🇸 US 🇨🇦 CA
Color: OrangeSealing Material: Rubber
Fitment notes — GM GENUINE 8662686
Color: OrangeSealing Material: Rubber
Trans. Code 4T65-E-HD/MN74 SpeedTurbine Shaft to Turbine Hub
View on
Amazon

This table covers the seals at the Turbine Shaft. 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.

Valve Body

Brand Part Number Markets Notes Buy
PA CARGO Fits: 3.8L V6 Supercharged GM4633
🇺🇸 US 🇨🇦 CA
Reman.
Fitment notes — PA CARGO GM4633
Reman.
Trans Code : 4T65E4 Speed2 PIECE PUMPWITH SERVO APPLY VALVES
View on
Amazon
SONNAX Fits: 3.8L V6 Supercharged GM035
🇺🇸 US 🇨🇦 CA
RemanDoes Not Include Pump or Separator Plate
Fitment notes — SONNAX GM035
RemanDoes Not Include Pump or Separator Plate
Trans. code 4T65-E
View on
Amazon

This table covers the valve bodies that route hydraulic pressure inside the transmission.

Valve Body Cover

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24211955
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
Fitment notes — GM GENUINE 24211955
Trans. code 4T65-E-HD/MN74 speedSTRUCTURAL SIDE
View on
Amazon

This table covers the Valve Body covers.

Valve Body Cover Gasket

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24205119
🇺🇸 US 🇨🇦 CA
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon

This table covers the gaskets that seal the Valve Body 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.

Valve Body Separator Plate

Brand Part Number Markets Notes Buy
GM GENUINE Fits: 3.8L V6 Supercharged 24217552
🇺🇸 US 🇨🇦 CA
Includes Gaskets
Fitment notes — GM GENUINE 24217552
Includes Gaskets
Trans. code 4T65-E-HD/MN74 speed
View on
Amazon

This table covers the Valve Body Separator 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.

Valve Body Vacuum Tester

Brand Part Number Markets Notes Buy
SONNAX Fits: 3.8L V6 Supercharged 84754VTP
🇺🇸 US 🇨🇦 CA
Vacuum Test Plate KitFor GM 4T65-E Units
Fitment notes — SONNAX 84754VTP
Vacuum Test Plate KitFor GM 4T65-E Units
Trans. code 4T65-E
View on
Amazon

This table covers the testers used to diagnose a valve body.

Buying Automatic Transmission Parts for a 1999 Buick Regal

On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.

  • Match the engine first. Every automatic transmission 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 filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Transmission Fluid and Shift Solenoid .

Frequently Asked Questions

How many automatic transmission parts fit the 1999 Buick Regal?

Our catalog currently lists 275 automatic transmission parts for the 1999 Buick Regal across 71 subcategories and 47 brands, covering both the 3.8L V6 and the 3.8L V6 Supercharged. Each part is matched to the engine(s) it fits.

Do automatic transmission parts differ between 1999 Buick Regal engines?

Yes. Every automatic transmission 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 automatic transmission problems on a 1999 Buick Regal?

Common symptoms include delayed or harsh engagement, slipping under load, fluid that smells burnt, or shuddering at light throttle around 40 mph. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, replace the filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.

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 use exactly the fluid specification in the notes — automatic transmissions are the least forgiving component on the vehicle about fluid choice. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 1999 Buick Regal

Automatic Transmission Parts for Other Buick Regal Years

Switch vehicle or jump to a subcategory

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.