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

Yukon Gear & Axle Cut-to-Fit Axle Shafts YA WGM14T-30-35

Axle Shaft, Rear, 4340 Chromoly, 30-spline, 35.000 in. Length, Full Floating, GM 10.5 in (14-bolt), GM 11.5 in

Part Number: YGA-21716

5.0 out of 5 stars ( 1 )

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Dorman Ring and Pinion Sets 697-812 GM 8.5 in. 2.73 Gears

Gear, Ring and Pinion, 2.73:1 Ratio, GM 8.5 in., Set

Part Number: RNB-697-812

4.0 out of 5 stars ( 1 )

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Bowler Performance Tilton Hydraulic Clutch Master Cylinder Kits 4773873

Bowler Performance Tilton Hydraulic Clutch Master Cylinder Kits 4773873

Clutch Master Cylinder, Tilton Hydraulic, 0.750 in. Bore Size, Aluminum, Black, Two Outlets, Reservoir, Chevrolet, GMC, Kit

Part Number: BTM-4773873

5.0 out of 5 stars ( 1 )

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Timken Driveshaft Center Support Bearings HB88107A

Bearing, Driveshaft Support, Checker, Chevy, GMC, Dodge, International, Isuzu, Oldsmobile, Plymouth, Each

Part Number: TMK-HB88107A

3.83 out of 5 stars ( 6 )

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Yukon Gear & Axle U-Joints YUJ153

U-Joint, Spicer 1310, Greasable, Steel, Each

Part Number: YGA-42008

5.0 out of 5 stars ( 3 )

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Yukon Gear & Axle U-Joints YUJ1310

U-Joint, Spicer 1310, Steel, Each

Part Number: YGA-42003

3.67 out of 5 stars ( 6 )

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Richmond Gear Ring and Pinion Installation Half Kits 83-1021-B

Ring and Pinion Installation Kit, GM, 10-Bolt, 8.5 in. Diameter Ring Gear, 30-Spline Pinion, Kit

Part Number: RMG-831021B

2.67 out of 5 stars ( 3 )

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Timken Pinion Bearing Races HM88610

Pinion Bearing Race, 2.844 in. Diameter, Each

Part Number: TMK-HM88610

5.0 out of 5 stars ( 1 )

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Auburn Gear Select-A-Loc 35 Spline Differential Dana 60 545023

Differential, Auburn, Locker, Select-A-Loc, 35-Spline, Dana 60, 10-Bolt, Each

Part Number: AUB-545023

Not Yet Reviewed

Estimated Ship Date: Apr 3, 2026 if ordered today

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Estimated Ship Date: Apr 3, 2026 if ordered today

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Eaton Electronic ELocker 35 Spline Differential Dana 60/60-HD 14023-010

4 out of 5 stars ( 2 )

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Motive Gear Differential Pinion Shims 1100

Differential Shims, Pinion Shim Type, Steel, Set

Part Number: MGR-1100

3.86 out of 5 stars ( 7 )

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ATP Automatic Transmission Filter Kits B-37

Transmission Filter, Direct-Fit, Kit

Part Number: ATP-B37

5.0 out of 5 stars ( 3 )

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RAM 200 Series Clutch Discs 202

Clutch Disc, 200 Series, 1.125 in. - 10-spline, Organic, 11.00 in. Diameter, AMC, Buick, Chevy, GMC, Jeep

Part Number: RAM-202

Not Yet Reviewed

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Zoom 30000 Series Clutches 30015

Clutch Kit, Ceramic, 1 1/8 in. Diameter Shaft, 10-Spline, 11 in. Diameter Disc, Kit

Part Number: ZZZ-30015

3.5 out of 5 stars ( 4 )

Estimated Ship Date: May 20, 2026 if ordered today

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Estimated Ship Date: May 20, 2026 if ordered today

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Summit Racing™ Clutch Kits SUM-700824

Not Yet Reviewed

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Richmond Gear EXCel Ring and Pinion Sets 12BT410T GM 8.875 in. (12-bolt) truck 4.10 Gears

Gear, Ring and Pinion, EXCel, 4.10:1 Ratio, GM, 8.875 in., 12-Bolt Truck, Set

Part Number: RMG-12BT410T

4.5 out of 5 stars ( 2 )

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Timken Pinion Bearing Races HM804810

Bearing Race, Differential Pinion, 3.750 in. Diameter, Cadillac, Each

Part Number: TMK-HM804810

Not Yet Reviewed

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Richmond Gear Ring and Pinion Sets 69-0171-1 GM 8.5/8.6 in. 5.13 Gears

Gear, Ring and Pinion, 5.13:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901711

5.0 out of 5 stars ( 1 )

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TCI PRO-X TH400 Aluminum Tailhousings 226405

Tailshaft Housing, Aluminum, GM, TH400, Each

Part Number: TCI-226405

5.0 out of 5 stars ( 4 )

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Sachs Stock Replacement Throwout Bearings SN1716SA

Throwout Bearing, Replacement, Standard Style, Buick, Checker, Chevrolet, GMC, Oldsmobile, Pontiac, Each

Part Number: SXR-SN1716SA

Not Yet Reviewed

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Powertrax No-Slip Traction Systems GM 8.5 Inch 9207852805

Differential, No-Slip Traction System, 28-Spline, GM, 8.5 in., Each

Part Number: PWT-9207852805

4.5 out of 5 stars ( 4 )

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Motive Gear Differential Bearing Kits 706016XR

Differential Carrier Bearing, Races Included, Koyo Bearing, Steel, Set

Part Number: MGR-706016XR

Not Yet Reviewed

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Powertrax Lock-Right Lockers Chrysler 9.25 Inch 1950-LR

Differential, Lock-Right, Locker, 33-Spline, GM, 9.2 in./9.5 in., Each

Part Number: PWT-1950-LR

4.67 out of 5 stars ( 3 )

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Centerforce Billet Steel 168-Tooth Flywheel 600120

Flywheel, Billet Steel, Low Inertia, 168-tooth, 20.85 lbs., Internal Balance, Chevy, Big Block, Small Block, Each

Part Number: CTF-600120

5.0 out of 5 stars ( 1 )

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Richmond Gear Ring and Pinion Sets 49-0072-1 GM 8.875 in. (12-bolt) truck 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 12-Bolt Truck, 3 Series, Set

Part Number: RMG-4900721

3.67 out of 5 stars ( 3 )

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Motive Gear Differential Cross Shafts and Fasteners 14006401

Cross Pin, GM, 10-Bolt, 8.5 in. Each

Part Number: MGR-14006401

Not Yet Reviewed

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Yukon Gear & Axle Differential Clutch Sets YPKGM12-PC-14

Differential Clutch, Steel Pack, Rear, Posi, GM, 8.875 in., Set

Part Number: YGA-16041

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