1981 GMC K1500 Differential & Rear-End Components

Pinion Bearing Spacer, Crush Sleeve Eliminator, Steel, Chrysler 9.25 in., GM 8.5 in., Each

Part Number: YGA-55048

4.85 out of 5 stars ( 26 )

Estimated Ship Date: Today

Ring and Pinion Installation Kit, GM, 8.5 in., GM, Kit

Part Number: MGR-R10R

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

Differential Cover, 10-bolt, Steel, Chrome, GM 8.2 in., GM 8.5 in., GM 8.6 in., Each

Part Number: YGA-32017

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Axle Shaft, Front, Dana 44, Each

Part Number: SDH-41677

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Pinion Bearing Spacer, Crush Sleeve Eliminator, Steel, GM 8.875 in. Truck, Each

Part Number: YGA-55046

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

Differential Cover, 12-bolt, Steel, Chrome, GM 8.875 in. Truck, Each

Part Number: YGA-32012

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

Differential Cover, Steel, Chrome, GM, 12-Bolt, Truck, Kit

Part Number: MRG-9895

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

Spool, Mini, Steel, 30-Spline, 12-Bolt, GM 8.875 in., Each

Part Number: MGR-MS12C

3.38 out of 5 stars ( 8 )

Estimated Ship Date: Today

Differential Pinion Bearing Kit, GM 8.875 in. Truck, Koyo Bearings, Chevy, GMC, Kit

Part Number: MGR-R12RPK

Not Yet Reviewed

Estimated Ship Date: Today

Ring and Pinion Installation Kit, Master Kit, GM, 8.875 in., 30-Spline Pinion, Truck, Kit

Part Number: MGR-R12RMK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Mini Spool, Steel, 28-Spline, GM 8.5 in., Each

Part Number: MGR-MS10-28

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit

Part Number: MGR-R10RPK

Not Yet Reviewed

Estimated Ship Date: Today

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

Part Number: RMG-78-1028-1

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Today

8.5" GM PINION KIT, KOYO BRGS

Part Number: SPZ-60012

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

• Drop Ship
• Special Order

Spacer, Replacement, Active Spacer, Each

Part Number: PWT-624004SDG2

Not Yet Reviewed

Estimated Ship Date: Mar 11, 2026 if ordered today

• Drop Ship
• Special Order

Spider Gears, Side Gears, Cross Shaft Pin, Cross Shaft Pin Bolt, 28 Spline, Open, Rear, GM 8.5 in., Kit

Part Number: CWA-26019852

Not Yet Reviewed

Estimated Ship Date: Apr 16, 2026 if ordered today

• Drop Ship
• Special Order

Ring Gear Spacer, 0.200 in. Thick, 10-bolt, GM 8.5 in., Each

Part Number: MGR-085050

4.5 out of 5 stars ( 6 )

Estimated Ship Date: Feb 10, 2026 if ordered today

• Drop Ship
• Special Order

Differential Main Cap Studs, GM, Kit

Part Number: YGA-32271

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

• Drop Ship
• Special Order

Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit

Part Number: MGR-R10RTPK

Not Yet Reviewed

Estimated Ship Date: Feb 10, 2026 if ordered today

• Drop Ship
• Special Order

Cross Shaft, Differential, Steel, GM 12 Bolt, with Mini-Spool, Each

Part Number: YGA-32236

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 23, 2026 if ordered today

• Drop Ship
• Special Order

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

Part Number: MGR-R12R

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 10, 2026 if ordered today

• Drop Ship
• Special Order

Pinion Bearing Kit, PK GM 8.875" TRUCK

Part Number: MGR-R12RTPK

Not Yet Reviewed

Estimated Ship Date: Feb 10, 2026 if ordered today

• Drop Ship
• Special Order

Cross Shaft, Differential, Steel, GM 8.5 in., with Mini-Spool, Each

Part Number: YGA-32238

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

• Drop Ship
• Special Order

SOLID PINION SPACER, 12 BOLT TRUCK

Part Number: MGR-4107

Not Yet Reviewed

Estimated Ship Date: Feb 10, 2026 if ordered today

• Drop Ship
• Special Order

12P & 12T GM NOTCHED X/PIN SHAFT STD & POSI

Part Number: YGA-33429

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

• Drop Ship
• Special Order