1981 CHEVROLET K20 Differential & Rear-End Components Transmission & Drivetrain - In Stock Filter Options - Vendor In Stock Filter Options

USA Standard Gear Ring and Pinion Sets ZG GM8.5-488 GM 8.5/8.6 in. 4.88 Gears

Ring and Pinion Gear, 4.88:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36219

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

USA Standard Gear Ring and Pinion Sets ZG GM8.5-513 GM 8.5/8.6 in. 5.13 Gears

Ring and Pinion Gear, 5.13:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36220

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

USA Standard Gear Ring and Pinion Gears ZG GM14T-342

Ring and Pinion Gear and Installation Kit USA Standard

Part Number: SPZ-36284

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Yukon Gear & Axle Minimum Install Kits MK GM14T-A

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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Estimated Ship Date: Mar 25, 2026 if ordered today

Yukon Gear & Axle Differential Carrier Replacement Parts YSPCG-003

Clutch Guide, Dura Grip, Chrysler 9.25 in., GM 8.5 in., 8.6 in., 8.875 in., Each

Part Number: YGA-33352

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Richmond Gear EXCel Ring and Pinion Gear Installation Kits XL-1066-1

Ring and Pinion Installation Kit, Complete, GM 9.5 in., Rear, Kit

Part Number: RMG-XL-1066-1

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

Dorman Ring and Pinion Sets 697-303 GM 8.5/8.625 in. 4.10 Gears

Differential Ring And Pinion Set

Part Number: RNB-697-303

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Motive Gear Differential Pinion Gear Thrust Washers 3984818

WASHER PIN 8.5 GM 10 BOLT

Part Number: MGR-3984818

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Motive Gear Differential Carrier Replacement Parts 3977345

WASHER S.G. 14 BOLT 10.5

Part Number: MGR-3977345

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today

Yukon Gear & Axle Pinion Support Fasteners YSPBLT-087

Pinion Bolt, GM 10.5-IN. 14 bolt pinion support bolt

Part Number: YGA-33582

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Estimated Ship Date: Mar 23, 2026 if ordered today

SVL Drivetrain Ring and Pinion Gear Sets 2020642 GM 8.5/8.6 in. 3.42 Gears

Ring & Pinion Gear Set GM 10 Bolt 8.5" / 3.42 Ratio

Part Number: SVL-2020642

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Spicer Drivetrain Products Axle Shafts 10007809

Chromoly Front Axle Shaft - Inner (Dana 60) RH/LH

Part Number: SDH-10007809

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Motive Gear Ring Gear Spacers 085050C

Differential Ring Gear Spacer, Ring Gear Spacer

Part Number: MGR-085050C

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today

SKF Bearings Tapered Cone Bearings BR35

Differential Carrier Bearings, Tapered Roller, Race, Steel, Each

Part Number: SKF-BR35

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Hurst Master Overhaul Ring and Pinion Installation Kits 02-120

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

Part Number: HUU-02-120

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

USA Standard Gear Spider Gear Sets ZIKGM9.5-S-33

USA Standard Gear standard spider gear set for GM 9.5", 33 spline

Part Number: SPZ-39029

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Motive Gear Master Ring and Pinion Installation Kits R14RMKL

Ring and Pinion Installation Kit, Master, GM 10.5 in. 14-Bolt, Rear, Kit

Part Number: MGR-R14RMKL

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today

Richmond Gear Differential Carrier Rebuild Kits XL-4058

Differential Carrier Gear Kit

Part Number: RMG-XL-4058

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today

USA Standard Gear Spider Gear Sets ZIKGM14T-S-30

USA Standard Gear standard spider gear set for GM 10.5" 14 bolt truck

Part Number: SPZ-39022

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Yukon Gear & Axle Pinion Installation Kits PK GM8.5-F

Yukon Pinion install kit for GM 8.5" front differential

Part Number: YGA-13070

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 25, 2026 if ordered today

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Estimated Ship Date: Mar 25, 2026 if ordered today

Excel Ring Pinion and Axle Differential Cross Shafts XL-5640

Pinion Shaft, CROSS PIN-GM 10 BOLT 8.5" - 93

Part Number: RMG-XL-5640

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today

Yukon Gear & Axle Bearing Kits BK GM8.5-F

Yukon Bearing install kit for GM 8.5" front differential

Part Number: YGA-11068

Not Yet Reviewed

Estimated Ship Date: Mar 25, 2026 if ordered today

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Estimated Ship Date: Mar 25, 2026 if ordered today

Motive Gear Differential Carrier Replacement Parts 3977346

WASHER PINION 14 BLT 10.5

Part Number: MGR-3977346

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today

Motive Gear Axle Retainer Plates 3833322

Axle Shaft Retainer

Part Number: MGR-3833322

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today

Motive Gear Basic Ring and Pinion Gear Installation Kits R14RPK

Ring and Pinion Installation Kit, Basic, GM 10.5 in. 14-Bolt, Rear, Kit

Part Number: MGR-R14RPK

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today