1981 CHEVROLET K20 Transmission & Drivetrain

Automatic Transmission Shift Shaft Seal, Nitrile, Buick, Cadillac, Chevy, Each

Part Number: ADO-8792S

1.0 out of 5 stars ( 2 )

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

Throwout Bearing, Standard, Self-aligning, Buick, Checker, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: TMK-614018

3.67 out of 5 stars ( 3 )

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

Differential Side Bearing Spacer; Differential Carrier Shims; For Ford 7.5 in./GM 7.5 in./GM 8.5 in./GM 8.2 in

Part Number: RMG-3800061

4.53 out of 5 stars ( 15 )

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

U-Joints, Spicer 1310 To GM 3RL/S44/Mechanics 3/American Axle 1344, Steel, Each

Part Number: YGA-42013

5.0 out of 5 stars ( 1 )

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

Flexplate, 153 Tooth, Internal Balance, 2-Piece Rear Main Seal, Steel, Chevy, Each

Part Number: QTI-RM-922

4.2 out of 5 stars ( 5 )

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

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Differential Carrier Cases, GM 8.5 in., 28/30 Spline, 2.73 and Up Ratio, Each

Part Number: YGA-20083

4.6 out of 5 stars ( 5 )

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

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Ring and Pinion-GM 8.5/8.625

Part Number: MGR-GM10-308A

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

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Transmission Filter, Replacement, TH400, Buick, Chevrolet, GMC, Jeep, Oldsmobile, Pontiac, Each

Part Number: WIX-58881

3.5 out of 5 stars ( 8 )

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

Differential Carrier, Positraction, 30-spline, Steel, Rear, Chevy, GMC, GM 10.5 in. 14-bolt, Each

Part Number: SUM-730987

5.0 out of 5 stars ( 1 )

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

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Clutch Kit, Organic, 1 1/8 in.- 10-Spline, 12 in. Disc, Chevy, GMC, Pickup, SUV, Van, L6, V8, Kit

Part Number: ZZZ-MU1862-1

3.0 out of 5 stars ( 4 )

Estimated Ship Date: May 18, 2026 if ordered today

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Pilot Bushing and Bearings, Stock, Roller, Powdered Metal, Each

Part Number: RNB-690-057

5.0 out of 5 stars ( 2 )

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

Axle Bearing, 2.985 in. O.D., GM, 9.5 in. Outer, Each

Part Number: YGA-10003

5.0 out of 5 stars ( 1 )

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

Ring and Pinion Installation Kit, GM, 8.5 in., 10-Bolt, Kit

Part Number: RMG-831021TE

5.0 out of 5 stars ( 1 )

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

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Gear, Ring and Pinion, 4.56:1 Ratio, GM, 9.5 in., 14-Bolt, Truck, Set

Part Number: MGR-GM9-5-456

4.5 out of 5 stars ( 2 )

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

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 12-Bolt Truck, 4 Series, Set

Part Number: RMG-4902801

4.0 out of 5 stars ( 12 )

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

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Axle Shaft, Rear, 6 x 5.50 in. Bolt Circle, GM, Each

Part Number: HUU-02-116

Not Yet Reviewed

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

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Automatic Transmission Lever, Steel, Natural, Each

Part Number: HUU-1050180

5.0 out of 5 stars ( 4 )

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

Ring & Pinion Gear, 5.13 Ratio, GM, 10.5 in., 14-Bolt, Set

Part Number: YGA-24139

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Carrier Shims, Super, Steel, Kit

Part Number: YGA-55001

4.87 out of 5 stars ( 15 )

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

Transmission Modulator Valve, GM, TH350, Each

Part Number: ATP-JX67

4.9 out of 5 stars ( 10 )

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

Pilot Bearing, Roller, Steel, AMC, Buick, Chevy, GMC, Jeep, Oldsmobile, Pontiac, Studebaker, Each

Part Number: TMK-PB656HD

4.5 out of 5 stars ( 8 )

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

Clutch Kit, Magnum Force, 1.125 in.-26, Aluminum Flywheel, 8.0 in. Disc, Circle Track, Road Race, Kit

Part Number: MCL-651002-00-07

Not Yet Reviewed

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

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

Part Number: MGR-R10RPK

Not Yet Reviewed

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

Automatic Transmission Filter, TH400, AM General, Buick, Cadillac, Checker, Chevy, Ferrari, GMC, Jaguar, Each

Part Number: ADO-TF231

1.0 out of 5 stars ( 2 )

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

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

Part Number: MGR-R12RPK

Not Yet Reviewed

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