OLDSMOBILE Differential & Rear-End Components

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 12-Bolt Car, 3 Series, Set

Part Number: RMG-6903061

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

• Free Shipping

Differential, No-Slip Traction System, 30-Spline, GM, 8.5 in., Each

Part Number: PWT-92-0785-3005

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Mar 30, 2026 if ordered today

• Free Shipping
• Special Order

Differential, Lock-Right, Locker, 26-Spline, GM, 7.5 in., Each

Part Number: PWT-1930-LR

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

• Free Shipping

Differential Cover, 10-bolt, Steel, Chrome, GM 7.5 in., GM 7.625 in., Each

Part Number: YGA-32014

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Differential, Eaton Detroit Locker, 30-Spline, GM, 8.5 in., Each

Part Number: ETN-187C148A

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 11, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Ring and Pinion Gears, GM 8.5/8.6 in., 4.88:1 Ratio, 30-spline, Standard, Must Use 2.73:1 or Numerically Higher Ratio Carrier, GM 8.5/8.6 in., Set

Part Number: SVL-2023704

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

• Free Shipping

Differential Vent, Round Head Style, Plastic, White, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: OPG-C220128

3.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Crush Sleeve, Steel, GM 8.2 in., GM 8.2 in., BOP Axle, Each

Part Number: YGA-33103

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Ring and Pinion Install Kit

Part Number: RMG-83-1083-1

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Pinion Nut, Steel, Each

Part Number: MGR-1260823

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Gear, Ring and Pinion, EXCel, 4.10:1 Ratio, GM, 8.875 in., 12-Bolt Car, Set

Part Number: RMG-12BC410T

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Installation Kit, Master Overhaul, GM 7.5 in., Kit

Part Number: YGA-14076

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Cross Shaft, Differential, Steel, GM, 10-Bolt, 7.5 in., with Mini Spool, Each

Part Number: RMG-CSPGM75

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Differential Crush Sleeve; Fits GM 8.5 in.

Part Number: RMG-19-0004-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Axle Assemblies, Stock Width, Ford 9 in., Black, 60.25 in. Flange to Flange, 31-Spline Axles, 1541H Alloy, Chevy,Buick, Oldsmobile, Pontiac, Kit

Part Number: ART-11249682

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Bearing, Pinion, 1.312 in. Inside Diameter, Each

Part Number: NTL-M88048

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Spool, Full Size, Steel, 28-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: MGR-FS10-28

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

• Free Shipping

Differential, Grip Pro Traction System, 28-Spline, GM 7.5 in., 7.625 in., Each

Part Number: PWT-GT247528

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

• Free Shipping

Differential Cover, Steel, Natural, Chevy, GMC, Oldsmobile, Pontiac, 7.500 in., 7.625 in., 10-Bolt, Each

Part Number: RNB-697-701

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Axle Shafts, New CV Drive Axles, Front, Buick, Chevrolet, GMC, Isuzu, Oldsmobile, Saab, Each

Part Number: AAZ-66-1345

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Gear, Ring and Pinion, 3.23:1 Ratio, GM 8.5 in., Set

Part Number: RNB-697-810

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

• Free Shipping

Axle Shafts, New CV Drive Axles, Front Right, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: AAZ-66-1250

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Replcement Springs, Powertrax No-Slip, Kit

Part Number: PWT-8001001KAV

4.93 out of 5 stars ( 15 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Pinion Spacer and Shims, Steel, GM, 8.875 in., Passenger Car, Kit

Part Number: RMG-040012S

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Rear End Assembly, Grand National, Ford 9 in., 31-Spline Axles, 5 x 4.75 in. Pattern, G-Body Mounts, Kit

Part Number: SUM-CSUMCT006

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air