OLDSMOBILE Differential & Rear-End Components

Gear, Ring and Pinion, 3.42:1 Ratio, GM, 12-Bolt Passenger Car, Set

Part Number: MGR-G888342

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Differential, No-Slip Traction System, 30-Spline, GM, 12-Bolt, Each

Part Number: PWT-92-0788-3005

3.88 out of 5 stars ( 8 )

Estimated Ship Date: Dec 5, 2025 if ordered today

• Free Shipping
• Mfr. Rebate

$40.00 Mail-In Rebate

Price after Manufacturer Rebate: $621.99

Rebate Expires: 12/31/2025

Get $40 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details. ...Read More

Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only. Show Less

×

Differential, Lock-Right, Locker, 28-Spline, GM, 8.5 in., Each

Part Number: PWT-1920-LR

4.71 out of 5 stars ( 14 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping
• Mfr. Rebate

$35.00 Mail-In Rebate

Price after Manufacturer Rebate: $441.99

Rebate Expires: 12/31/2025

Get $35 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details. ...Read More

Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only. Show Less

×

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901671

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Clutch Kit, Street-Strip Performance, 1-1/8 in. Shaft, 26-Spline, 11 in. Organic/Ceramic Disc, GM, Kit

Part Number: SUM-700930

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Ring and Pinion Installation Kit, Rear, GM 8.875 in., 12-Bolt, GM, Passenger Car, Kit

Part Number: ETN-K-GM12CR

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Differential, Lock-Right, Locker, 28-Spline, GM, 7.625 in., Each

Part Number: PWT-1931-LR

4.62 out of 5 stars ( 13 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping
• Mfr. Rebate

$35.00 Mail-In Rebate

Price after Manufacturer Rebate: $392.99

Rebate Expires: 12/31/2025

Get $35 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details. ...Read More

Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only. Show Less

×

Differential Cover, Aluminum Girdle Cover, Natural, 10-bolt, GM 7.5 in., GM 7.625 in., Each

Part Number: YGA-32118

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Bearing, Pinion, 1.312 in. Inside Diameter, Each

Part Number: TMK-M88048

5.0 out of 5 stars ( 13 )

Estimated Ship Date: Monday 11/17/2025

Ring and Pinion Gears, 3.73:1 Ratio, 27-spline, Standard Ring Gear Rotation, GM 8.2 in., BOP, Set

Part Number: YGA-24505

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Differential Carrier Bearings, Steel, Races, Shims, Rear, GM 8.2 in., GM 8.5 in., Kit

Part Number: YGA-57008

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Differential Carrier Case, Open, 28-spline, Rear, GM 7.5 in., GM 7.625 in., 3.23 Ratio and Up, Chevy, Each

Part Number: YGA-20102

Not Yet Reviewed

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Differential, Posi Performance, Limited Slip, 28-Spline, Buick, Oldsmobile, Pontiac, 8.2 in., Each

Part Number: ETN-19674-010

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Differential Carrier Bearing, Steel, 2.250 in. Diameter, Chevy, GMC, Dodge, Ford, International, Jeep, Each

Part Number: TMK-387A

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/17/2025

Gear, Ring and Pinion, 4.33:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-79-0074-1

3.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Ring and Pinion Installation Kit, GM, 7.5 in./7.625 in., 10-Bolt, 27-Spline Pinion, Kit

Part Number: RMG-8310441

4.53 out of 5 stars ( 17 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Differential, Auburn, Grip-N-Loc, Limited Slip, 30-Spline, GM, 8.5/8.6 in., 2.73 Ratio and up, Each

Part Number: AUB-546022

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Ring and Pinion Installation Kit, Master Kit, GM 7.5/7.625 in., Kit

Part Number: MGR-R7-5GRLMKT

3.57 out of 5 stars ( 14 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Differential Carrier Bearings, Standard Replacement, 1.625 in. Bore, AMC, GM, Mopar, Jeep, International, Studebaker, Hummer, Each

Part Number: TMK-LM501349

3.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 11/17/2025

Gear, Ring and Pinion, 3.42:1 Ratio, GM, 8.5 in/8.6 in., Set

Part Number: MGR-GM10-342

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Differential Shims, Carrier Type, 2.25 in. I.D., 3.00 in. O.D., Steel, Dodge, Ford, GM, Hummer, Isuzu, Jeep, Lincoln, Mazda, Mercury, Saab, Kit

Part Number: MGR-SS12

4.0 out of 5 stars ( 15 )

Estimated Ship Date: Monday 11/17/2025

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 8.2 in., Buick, Pontiac, Set

Part Number: MGR-BP882373

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Hardware, Rear Axle/Transmission Ventilator

Part Number: OER-15771000

4.05 out of 5 stars ( 22 )

Estimated Ship Date: Monday 11/17/2025

Gear, Ring and Pinion, EXCel, 3.42:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75342OE

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping

Gear, Ring and Pinion, 3.90:1 Ratio, GM, 12-Bolt Passenger Car, Set

Part Number: MGR-G888390

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/17/2025

• Free Shipping