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

Richmond Gear Ring and Pinion Sets 69-0350-1 GM 8.875 in. (12-bolt) truck 4.11 Gears

Gear, Ring and Pinion, 4.11:1 Ratio, GM, 12-Bolt Truck, 3 Series, Set

Part Number: RMG-6903501

Not Yet Reviewed

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Lokar Hi-Tech Flexible Braided Stainless Transmission Dipsticks TD-3400TM

Lokar Hi-Tech Flexible Braided Stainless Transmission Dipsticks TD-3400TM

Transmission Dipstick, Braided Stainless Steel, Natural, Transmission Mount, TH400, Each

Part Number: LOK-TD-3400TM

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Yukon Gear & Axle U-Joints YUJ1153

U-Joint, Spicer 1350 To GM 3RL/S44/Mechanics 3/American Axle 1344 Combination, Greasable, Steel, Each

Part Number: YGA-42001

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Hays Billet Steel 168-Tooth Flywheel 10-140

Flywheel, Steel, 168-Tooth, 40 lb., Internal Engine Balance, Chevy, Big, Small Block, Each

Part Number: HAY-10-140

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Eaton Detroit Lockers GM 8.5 Inch 187C149A

Differential, Eaton Detroit Locker, 28-Spline, GM, 8.5 in., 3-Series, Each

Part Number: ETN-187C149A

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Timken Wheel Seals 2081

Seal, Inner Seal, Chevy, GMC, Rear, Each

Part Number: TMK-2081

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Spicer Drivetrain Products Center Yokes 2-26-497

Center Yoke, Spicer 1310, Steel, Each

Part Number: SDH-2-26-497

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Hays Twister 3/4 Race 2,800-3,200 Stall Torque Converter 97-1D28Q

Torque Converters, Twister 3/4 Race, Street/Strip, 2,800-3,200 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevy THM400, Buick, Chevy, Each

Part Number: HAY-97-1D28Q

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

Spicer Drivetrain Products Slip Yokes 2-3-8001KX

Yokes, Slip Yokes, Spicer 1310, 16-spline Inner, Steel, 6.813 in. Overall Length, for Slip-style Driveshafts, Rear Differential Position, Each

Part Number: SDH-2-3-8001KX

Not Yet Reviewed

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National Bearing Automatic Transmission Selector Shaft Seals 8792S

Seal, Automatic Transmission Shift Shaft, Steel/Rubber, GM, Each

Part Number: NTL-8792S

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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McLeod Pressure Plate Bolts 1512

Pressure Plate Bolts, Hex Head, Steel, Black, 3/8 in.-16 Thread, Chevrolet, Chrysler, Dodge, Oldsmobile, Plymouth, Pontiac, Set of 6

Part Number: MCL-1512

5.0 out of 5 stars ( 4 )

Cannot be shipped Internationally

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Cannot be shipped Internationally

Motive Gear Ring and Pinion Sets GM12-342 GM 8.875 in. (12-bolt) truck 3.42 Gears

Gear, Ring and Pinion, 3.42:1 Ratio, GM, 8.875 in. Truck, Set

Part Number: MGR-GM12-342

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Motive Gear Ring and Pinion Sets GM12-456 GM 8.875 in. (12-bolt) truck 4.56 Gears

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 12-Bolt, Truck, Set

Part Number: MGR-GM12-456

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Moog Premium U-Joints 331

Universal Joint, 1350 Style, Greasable, Steel, Each

Part Number: MOG-331

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Yukon Gear & Axle Ring and Pinion Sets YG 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: YGA-24140

Not Yet Reviewed

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Richmond Gear EXCel Ring and Pinion Sets GM105373 GM 10.5 in. (14-bolt) 3.73 Gears

Ring and Pinion Gears, EXCel, 3.73:1 Ratio, 30-spline, Standard Rotation, GM 10.5 in., Chevy, GMC, Rear, Set

Part Number: RMG-GM105373

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

WIX Filters Transmission Filters 58878

Transmission Filter, Replacement, Each

Part Number: WIX-58878

4.55 out of 5 stars ( 20 )

Estimated Ship Date: Tomorrow

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DEA Products Driveshaft Center Support Bearings A6035

Drive Shaft Center Support, Buick, Chevy, GMC, Each

Part Number: DOS-A6035

Not Yet Reviewed

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McLeod Pilot Bearings and Bushings 8617

Pilot Bushing, 0.400 in. Extended Length, 0.592 in. ID, Bronze, Each

Part Number: MCL-8617

4.45 out of 5 stars ( 11 )

Estimated Ship Date: Tomorrow

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SVL Drivetrain Ring and Pinion Gear Sets 2023698 GM 8.5/8.6 in. 3.23 Gears

Ring and Pinion Gears, 3.23:1 Ratio, GM 8.5 in., Set

Part Number: SVL-2023698

Not Yet Reviewed

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Timken Pinion Bearings HM89449

Pinion Bearing, 1.437 in. i.d., BMW, Buick, Cadillac, Chevy, GMC, Chrysler, Dodge, Mercedes-Benz, Volvo, Each

Part Number: TMK-HM89449

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Motive Gear Differential Carrier Shim Kits SS10

Differential Shims, Carrier, Steel, Kit

Part Number: MGR-SS10

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Richmond Gear EXCel Ring and Pinion Sets GM105410 GM 10.5 in. (14-bolt) 4.10 Gears

Ring and Pinion Kit

Part Number: RMG-GM105410

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

B&M Nitrous Holeshot 3,400-3,800 Stall Torque Converter 20482

Torque Converter, Nitrous Holeshot,3.400 3,800 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20482

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 11, 2026 if ordered today

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Estimated Ship Date: Mar 11, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Hughes Performance Billet 3,500 Stall Torque Converter GM35BILLET

Not Yet Reviewed

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Yukon Gear & Axle Differential Pinion Yokes YY GM14T-1350-30S

Differential Pinion Yoke, 1350, Strap Style, 30 Spline, Steel, GM 10.5 in., Each

Part Number: YGA-41179

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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