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

Motive Gear Differential Pinion Shims 1102

Pinion Shim Pack

Part Number: MGR-1102

4.33 out of 5 stars ( 3 )

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 Cross Pins and Shafts CSPGM85

Cross Shaft Pin, Mini Spool, GM, 8.5 in., 28-Spline, Each

Part Number: RMG-CSPGM85

4.5 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

QuickTime Lightweight Performance 153-Tooth Flexplate RM-901

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

Part Number: QTI-RM-901

4.0 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

Powertrax Grip Pro Traction Systems GM 9.5 Inch GT209533

Differential Carriers, Grip Pro Traction System, 33 Spline, 9.5 in. GM, Each

Part Number: PWT-GT209533

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Yukon Gear & Axle 1541H Alloy Axles YA D660276-1

Axle Shaft, Front Inner, Driver Side, 1541H Alloy Steel, 28-spline, GM 8.5 in., Each

Part Number: YGA-21122

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

Powertrax Replacement Active Spacers 624004SDG2

Spacer, Replacement, Active Spacer, Each

Part Number: PWT-624004SDG2

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

SVL Drivetrain Products Differential Carrier Rebuild Kits and Spider Gears 10020478

Differential Inner Gear Kit; GM 8.5 - 30 Spline, Open Diff

Part Number: SVL-10020478

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

B&M Holeshot 3,400-3,800 Stall Torque Converter 20425

Torque Converter, Holeshot, 3,400-3,800 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20425

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

QuickTime 168-Tooth Flexplate RM-902

Flexplate, 168 Tooth, Internal Balance, 2-Piece Rear Main Seal, Steel, Chevy, Each

Part Number: QTI-RM-902

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 Axle Shafts ZA W39253

4340 Chromoly axle shaft, left hand inner for '79-'87 GM, 35.46", uses 5-760X u/joint

Part Number: SPZ-35088

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

Powertrax Grip Pro Traction Systems GM 8.5 Inch GT201028

Differential, Grip Pro Traction System, 28-Spline, GM 8.5 in., Each

Part Number: PWT-GT201028

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Timken Transmission Shift Shaft Seals 240735

SEAL

Part Number: TMK-240735

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

Hays Street 650 Clutch Conversion Kits 92-1103

Clutch Kit, Street 650 Clutch Conversion Kits, Organic, Lever, 1.125 in. Diameter Shaft, 26-Spline, 11 in. Diameter Disc, Dodge, Plymouth, Kit

Part Number: HAY-92-1103

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

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

Ring and Pinion-GM 8.875

Part Number: MGR-GM12-456A

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 Differential Pinion Nuts YSPPN-014

Differential Pinion Nut, 15/16 in.-16 Thread, Steel, GM 10.5 in. (14-bolt), 1 1/2 in. Socket, Each

Part Number: YGA-33148

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 Ring and Pinion Sets YG GM8.5-308 GM 8.5/8.6 in. 3.08 Gears

Ring and Pinion Gears, 3.08:1 Ratio, 30-spline, Standard Rotation, GM 8.5/8.6 in., Set

Part Number: YGA-24492

5.0 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

Richmond Gear EXCel Pinion Yokes 96-2511

Pinion Yoke, Bolt-On, Steel, 1350, 30-Spline, GM 8.875, Each

Part Number: RMG-96-2511

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

Motive Gear Basic Ring and Pinion Gear Installation Kits R12R

Ring and Pinion Installation Kit, Basic, GM 8.875 in. 12-Bolt, Rear, Kit

Part Number: MGR-R12R

2.0 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

TCI PRO-X TH400 Center Support Rings 223603

TCI PRO-X TH400 Center Support Rings 223603

PRO-X TH400 CENTER SUPPORT RING

Part Number: TCI-223603

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

ATP Automatic Transmission Inline Filter Kits IL-150

Automatic Transmission Filters, Remote Mount, ATP Automatic Transmission Inline Filter Kits, 5/16 in. Diameter Lines, Sold as a Kit

Part Number: ATP-IL150

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

National Bearing Differential Bearings LM501349

Differential Carrier Bearing, Steel, Each

Part Number: NTL-LM501349

1.0 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 Pinion Shaft Lock Bolts 12337979

Differential Cross Shaft Bolt, Hex Head, Each

Part Number: MGR-12337979

3.5 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

Timken Manual Transmission Input Shaft Seals 482208

SEAL

Part Number: TMK-482208

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

Motive Gear Crush Sleeves 14012691

Differential Crush Sleeve, Steel, Each

Part Number: MGR-14012691

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 Crosspins and Shafts YP MINSXGM8.5

Cross Shaft, Differential, Steel, GM 8.5 in., with Mini-Spool, Each

Part Number: YGA-32238

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