1981 CHEVROLET K20 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: Tomorrow

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: Tomorrow

Differential Cover, 14-bolt, Steel, Natural, GM 9.5 in., Each

Part Number: YGA-32333

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

Axle Shaft, Front, Dana 44, Each

Part Number: SDH-41677

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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

Part Number: MGR-MS10-28

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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

Part Number: MGR-R10RPK

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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

Part Number: MGR-R12RPK

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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: Tomorrow

Differential Carrier Bearing, Steel, Each

Part Number: TMK-SET42

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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: Tomorrow

Differential Cover, 14-bolt, Steel, Chrome, GM 9.5 in., Each

Part Number: YGA-32018

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Differential Cover, 14-bolt, Steel, Natural, GM 10.5 in. (14-bolt), Each

Part Number: YGA-32345

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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: Mar 13, 2026 if ordered today

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

Part Number: MGR-R10RTPK

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Spacer, Replacement, Active Spacer, Each

Part Number: PWT-624004SDG2

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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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: Mar 13, 2026 if ordered today

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

Part Number: YGA-32238

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Ring and Pinion Gear Installation Kit, Minimum Install, 30-spline, Standard Rotation, Rear, GM 10.5 in. (14-bolt), Kit

Part Number: YGA-12045

Not Yet Reviewed

Estimated Ship Date: Mar 25, 2026 if ordered today

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Pinion Bearing Kit, PK GM 8.875" TRUCK

Part Number: MGR-R12RTPK

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Differential Cover, 14-bolt, Steel, Chrome, GM 10.5 in. (14-bolt), Each

Part Number: YGA-32013

Not Yet Reviewed

Estimated Ship Date: Mar 25, 2026 if ordered today

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SOLID PINION SPACER, 12 BOLT TRUCK

Part Number: MGR-4107

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Crosspin, Replacement, Steel, Spartan, GM 8.5 in., Each

Part Number: SPZ-17024

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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SPACER

Part Number: PWT-1920604SAJ

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Differential Rebuild Kit, Active Spacer

Part Number: PWT-1950604SBS

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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14T 10.5" GM STD X/PIN SHAFT, CROSS TYPE FOR 4 PIN DESIGN

Part Number: YGA-33405

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 25, 2026 if ordered today

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