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

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Timken Differential Pinion Seals 722109

Axle Spindle Seal, Each

Part Number: TMK-722109

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

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 11, 2026 if ordered today

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Estimated Ship Date: Mar 11, 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 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

USA Standard Gear Ring and Pinion Sets ZG GM14T-488T GM 10.5 in. (14-bolt) 4.88 Gears

USA Standard Ring & Pinion "thick" gear set for 10.5" GM 14 bolt truck in a 4.88 ratio

Part Number: SPZ-36186

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

Pioneer Automotive Automatic Transmission Rebuild Components 750002

OVERHAUL KIT

Part Number: PIO-750002

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

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

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Hurst Ring and Pinion Sets 02-128 GM 8.875 in. (12-bolt) truck 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 12-Bolt Truck, Set

Part Number: HUU-02-128

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

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 11, 2026 if ordered today

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Estimated Ship Date: Mar 11, 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

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

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

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Dorman U-Joint Repair Kits 81002

U-Joint Strap and Bolts, Each

Part Number: RNB-81002

3.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Yukon Gear & Axle Differential Crush Sleeves YSPCS-016

Crush Sleeve, Steel, 0.640 in. Tall, Each

Part Number: YGA-33099

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

Dorman U-Joint Fasteners 929-722

U-Bolt Repair Kit

Part Number: RNB-929-722

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

USA Standard Gear Ring and Pinion Sets ZG GM8.5-390 GM 8.5/8.6 in. 3.90 Gears

Ring and Pinion Gear, 3.90:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36215

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

GMB U-Joints 215-0299

Universal Joint

Part Number: GMB-215-0299

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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Estimated Ship Date: Monday 2/23/2026 if shipped by air

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 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 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

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