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

Standard Motor Automatic Transmission Control Solenoids SZ-1

Transmission Solenoid, Detent Solenoid, Downshift, Kickdown, GM, Each

Part Number: SMP-SZ1

3.2 out of 5 stars ( 5 )

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Timken Wheel Seals 416273

Wheel Bearing Seal, Front Inner, Chevy, GMC, Ford, Jeep, Each

Part Number: TMK-416273

5.0 out of 5 stars ( 1 )

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Motive Gear Ring and Pinion Sets GM10-308 GM 8.5/8.6 in. 3.08 Gears

Gear, Ring and Pinion, 3.08:1 Ratio, GM, 8.5 in/8.6 in., Set

Part Number: MGR-GM10-308

Not Yet Reviewed

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B&M Megashifters 80685

Automatic Shifter, Megashifter, Right Hand Drive Models, Chevy, Mopar, Ford, Lincoln, Mercury, Each

Part Number: BMM-80685

3.5 out of 5 stars ( 2 )

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Hurst Ring and Pinion Sets 02-127 GM 8.875 in. (12-bolt) truck 3.42 Gears

Gear, Ring and Pinion, 3.42:1 Ratio, GM, 12-Bolt Truck, Set

Part Number: HUU-02-127

Not Yet Reviewed

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Dura-Bond Automatic Transmission Bushings 44034

Automatic Transmission Bushing, 2.004 in. O.D., 0.605 in. Length, BMW, Buick, Cadillac, Chevy, GMC, Isuzu, Jeep, Olds, Opel, Pontiac, Suzuki, Each

Part Number: DUR-44034

Not Yet Reviewed

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Hays Billet Steel 168-Tooth Flywheel 10-130

Flywheel, Steel, 168-Tooth, 30 lb., Internal Engine Balance, Chevy, Big, Small Block, Each

Part Number: HAY-10-130

4.67 out of 5 stars ( 6 )

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Dorman Axle C-Clips 81050

Axle C-Clips, One kit Per Axle, Steel, GM, Assortment 1 Thick,1 thin, Kit

Part Number: RNB-81050

4.57 out of 5 stars ( 7 )

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SKF Bearings Pilot Bearings B656

Bushing, Pilot, Bronze, Buick, Olds, Pontiac, Jeep, Eagle, Chevy, GMC, Each

Part Number: SKF-B656

3.0 out of 5 stars ( 2 )

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Motive Gear Mini Spools MS12C

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

Part Number: MGR-MS12C

3.38 out of 5 stars ( 8 )

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Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-390 GM 8.5/8.6 in. 3.90 Gears

Ring and Pinion Gears, 3.90:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: YGA-24159

5.0 out of 5 stars ( 3 )

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Motive Gear 30 Spline Differential Carrier Cases GM 10.5 Inch (14-bolt) 6258336

Differential, Open, Empty, 30-Spline, GM, 10.5 in.,4.10 & lower ratio, Each

Part Number: MGR-6258336

3.78 out of 5 stars ( 9 )

Estimated Ship Date: Mar 13, 2026 if ordered today

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Estimated Ship Date: Mar 13, 2026 if ordered today

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Auburn Gear Grip-N-Loc 30 Spline Differential GM 8.875 Inch (12-bolt), truck 546032

5 out of 5 stars ( 1 )

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Moog Chassis Parts U-Joints 377

U-Joint "Super Strength 1310-WJ Style, Greasable, Steel, Each

Part Number: MOG-377

4.67 out of 5 stars ( 18 )

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USA Standard Gear Ring and Pinion Sets ZG GM8.5-342 GM 8.5/8.6 in. 3.42 Gears

Ring and Pinion Gears, 3.42:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5/8.6 in., Set

Part Number: SPZ-36213

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

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Motive Gear Ring and Pinion Sets GM10-342A GM 8.5/8.625 in. 3.42 Gears

4.5 out of 5 stars ( 16 )

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Powertrax Differential Spring Rebuild Kits 1025350KAP

Replacement Springs, Powertrax Lock-Right, Kit

Part Number: PWT-1025350KAP

4.73 out of 5 stars ( 15 )

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ACDelco Gold Universal Joints 19470447

Universal Joint, Steel, Buick, Cadillac, Chevrolet, Ford, GMC, Oldsmobile, Pontiac, Each

Part Number: ADO-45U0103

Not Yet Reviewed

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Centerforce Dual Friction Clutch Discs DF383735

Clutch Disc, Dual Friction, 1 1/8 in. Diameter Shaft, 10-Spline, 11 in. Diameter Disc, GM, Each

Part Number: CTF-DF383735

3.0 out of 5 stars ( 2 )

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McLeod RXT Street Twin Clutch Kits 6921-04

Clutch Kit, RXT, 1 1/8 in. x 10-Spline, Chevy, Small/Big Block, 166/168 tooth Flywheel, Kit

Part Number: MCL-6921-04

5.0 out of 5 stars ( 3 )

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Yukon Gear & Axle Differential Pinion Yokes YY GM14T-1410-30S

Yoke, Differential Location, 30-spline Inner, Steel, Rear, GM 10.5 in. (14-bolt), Each

Part Number: YGA-41180

1.0 out of 5 stars ( 1 )

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Richmond Gear EXCel Ring and Pinion Sets GM105456TK GM 10.5 in. (14-bolt) 4.56 Gears

Ring and Pinion Kit

Part Number: RMG-GM105456TK

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 Spider Gear Kits YPKGM14T-P-30-DG

Differential Carrier Rebuild Kit, GM 10.5 in. (14-Bolt), Rear, Open Carrier, Dura Grip, Chevy, GMC, Kit

Part Number: YGA-16167

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

Centerforce SST Clutch and Flywheel Kits 412614820

Clutch and Flywheel Kit, SST, 1 1/8 in. Diameter Shaft, 26-Spline, 10.4 in. Diameter Disc, Chevy, Kit

Part Number: CTF-412614820

Not Yet Reviewed

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Dorman Clutch Pilot Bushings and Bearings 14650

Clutch Pilot Bushing, Solid, Powdered Metal, Each

Part Number: RNB-14650

3.71 out of 5 stars ( 7 )

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Yukon Gear & Axle Differential Pinion Nuts YSPPN-018

Pinion Nut, Steel, Each

Part Number: YGA-33152

5.0 out of 5 stars ( 2 )

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Motive Gear Ring and Pinion Sets GM10-342 GM 8.5/8.6 in. 3.42 Gears

Gear, Ring and Pinion, 3.42:1 Ratio, GM, 8.5 in/8.6 in., Set

Part Number: MGR-GM10-342

5.0 out of 5 stars ( 3 )

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