1981 CHEVROLET K20 Transmission & Drivetrain - In Stock Filter Options - Vendor In Stock Filter Options

Hays Street 450 Clutch Conversion Kits 91-1005

Clutch Kits, Street 450 Clutch Conversion Kits, Performance, 1.125 in. - 26-spline, Organic Disc, Pressure Plate, Buick, Chevy, Olds, Pontiac, Kit

Part Number: HAY-91-1005

Not Yet Reviewed

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Richmond Gear EXCel Ring and Pinion Sets GM105513TK GM 10.5 in. (14-bolt) 5.13 Gears

Ring and Pinion Kit

Part Number: RMG-GM105513TK

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Timken Differential Pinion Seals 722109

Axle Spindle Seal, Each

Part Number: TMK-722109

4.5 out of 5 stars ( 2 )

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Motive Gear Differential Bearing Kits R14R

Ring and Pinion Bearing Kit; Bearing Kit; GM 10.5 in. 1st Design; Incl. F/R Pinion-Carrier-Pilot Bearings/Pini

Part Number: MGR-R14R

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

Fidanza Billet Aluminum 168-Tooth Flywheel 198681

Fidanza Billet Aluminum 168-Tooth Flywheel 198681

Flywheel, Aluminum, 13.5 lbs., Chevy, Each

Part Number: FIZ-198681

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

USA Standard Gear Ring and Pinion Sets ZG GM14T-538T GM 10.5 in. (14-bolt) 5.38 Gears

Ring and Pinion Gears, 5.38:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 10.5 in. (14-bolt), Set

Part Number: SPZ-36188

5.0 out of 5 stars ( 1 )

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 U-Joints YUJ760

U-Joint, Spicer 1310 Style, Steel, AMC, Chevy, Dodge, Ford, GMC, International, Jeep, Mazda, Mercury, Each

Part Number: YGA-42018

3.0 out of 5 stars ( 1 )

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Pioneer Automotive Automatic Transmission Rebuild Components 750002

OVERHAUL KIT

Part Number: PIO-750002

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

USA Standard Gear Ring and Pinion Sets ZG GM14T-411 GM 10.5 in. (14-bolt) 4.11 Gears

Ring and Pinion Gears, 4.11:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 10.5 in. (14-bolt), Set

Part Number: SPZ-36183

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Yukon Gear & Axle Differential Carrier Replacement Parts YSPTW-047

Thrust Washer, Open Differential, 0.795 in. Inside Diameter, GM 8.5 in./8.6 in., Each

Part Number: YGA-33385

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PRW Billet Steel 153-Tooth Flywheel 1626500

Flywheel, PQx, Billet Steel, 153-tooth, 18.000 lbs., SFI 1.1, Neutral Engine Balance, for Circle Track Racing, Chevy, Small Block, Each

Part Number: PQX-1626500

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Richmond Gear EXCel Ring and Pinion Sets GM95373 GM 9.5 in. 3.73 Gears

Ring and Pinion Kit

Part Number: RMG-GM95373

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 Ring and Pinion Sets ZG GM9.5-456 GM 9.5 in. 4.56 Gears

USA Standard Ring & Pinion gear set for GM 9.5" in a 4.56 ratio

Part Number: SPZ-36226

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SVL Drivetrain Differential Carrier Rebuild Kits 10028814

Differential Carrier Rebuild Kit, GM 8.5, 28 Spline, Rear, Open Carrier, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Kit

Part Number: SVL-10028814

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Yukon Gear & Axle U-Joints YP SJ-297X-201

U-Joint, Front Axle, Spicer 1310-WJ, GM 8.5, Dana 30, Dana 44, Greasable, Chromoly, Each

Part Number: YGA-32081

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

Yukon Gear & Axle Differential Crush Sleeves YSPCS-016

Crush Sleeve, Steel, 0.640 in. Tall, Each

Part Number: YGA-33099

Not Yet Reviewed

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Yukon Gear & Axle Differential Clutch Sets YPKGM9.5-PC-14

Differential Clutch, Carbon Fiber Pack, Rear, Open, GM, 9.5 in., Set

Part Number: YGA-16058

Not Yet Reviewed

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Dorman U-Joint Repair Kits 81002

U-Joint Strap and Bolts, Each

Part Number: RNB-81002

3.5 out of 5 stars ( 4 )

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Dorman U-Joint Fasteners 929-836

U-Bolt Kit

Part Number: RNB-929-836

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 Ring and Pinion Sets ZG GM8.5-323 GM 8.5/8.6 in. 3.23 Gears

Ring and Pinion Gears, 3.23:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5/8.6 in., Set

Part Number: SPZ-36212

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

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 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

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

GMB U-Joints 215-0299

Universal Joint

Part Number: GMB-215-0299

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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 27, 2026 if ordered today

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Estimated Ship Date: Mar 27, 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

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