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

Timken Pinion Bearing Races 31520

Pinion Bearing Race, 3.000 in. Diameter, Each

Part Number: TMK-31520

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 92-1004

Clutch Kit, Street 650 Clutch Conversion, Performance, Single Disc, 1.125 in. - 10-spline, 11.000 in. Sintered Metallic Disc Diameter, Chevy, Jeep

Part Number: HAY-92-1004

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

SVL Drivetrain Ring and Pinion Gear Sets 2023704 GM 8.5/8.6 in. 4.88 Gears

Ring and Pinion Gears, GM 8.5/8.6 in., 4.88:1 Ratio, 30-spline, Standard, Must Use 2.73:1 or Numerically Higher Ratio Carrier, GM 8.5/8.6 in., Set

Part Number: SVL-2023704

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

SKF Bearings Driveshaft Center Support Bearings HB206-FF

Driveshaft Center Support Bearing, Black Rubber Bushing, 1.18 in. Bearing Diameter, Chevrolet, GMC, International, Each

Part Number: SKF-HB206-FF

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 Ring Gear Bolts 331422

Ring Gear Fasteners, Replacement Bolt, Hex Head, Steel, Black Oxide, 1/2-20 in. RH, GM, 10.5 in., 14 Bolt, 4.10 and Lower Carrier, Each

Part Number: MGR-331422

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

Lokar Midnight Series Flexible Braided Stainless Transmission Dipsticks XTD-3400TM

Lokar Midnight Series Flexible Braided Stainless Transmission Dipsticks XTD-3400TM

Transmission Dipstick, Braided Stainless Steel, Black, Buick, Chevy, Oldsmobile, Pontiac, TH400, Each

Part Number: LOK-XTD-3400TM

3.0 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 Full Spools 81-1030-1

Spool, Full Size, Steel, 30-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: RMG-81-1030-1

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

ATP Automatic Transmission Inline Filter Kits JX-150

Transmission Filter, Inline, Hose Barbs, fits 5/16 in. Lines, 2 Hoses, 4 Clamps, Kit

Part Number: ATP-JX150

5.0 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

Yukon Gear & Axle Spider Gear Kits YPKGM8.5-S-28

Spider Gears, Open, Front or Rear, Internal Kit, Side Gears, Cross Pin and Bolt, GM, 8.5 in., 28 Spline, Kit

Part Number: YGA-16054

4.0 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

VEGE Remanufactured Stock Stall Torque Converter TQBU16A

Torque Converters, Remanufactured, OEM Style, 1.875 in. Slotted Hub, 3 Pad Mount, 12.00 in. Diameter, Stock Stall, 30 Spline Input, GM, Each

Part Number: CCV-TQBU16A

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

SVL Drivetrain Spider Gear Kits 2023880

Differential Inner Gear Kit; GM 9.5 - 33 Spline, Open Diff

Part Number: SVL-2023880

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Powertrax Differential Spring Rebuild Kits 8001001KAV

Replcement Springs, Powertrax No-Slip, Kit

Part Number: PWT-8001001KAV

4.93 out of 5 stars ( 15 )

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 Super Carrier Shims SK SSGM9.5

Carrier Shims, Steel, GM 9.5 in., Kit

Part Number: YGA-55003

4.67 out of 5 stars ( 6 )

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 Gear Bolts YSPBLT-021

Ring Gear Bolt, Hex Head, 1/2-20 in. Thread Size, Steel, Natural, Each

Part Number: YGA-33051

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

McLeod Aluminum 153-Tooth Flywheel 560300

Flywheel, Aluminum, 12.0 lbs. 153-Tooth, Internal/External Engine Balance, Chevy, Each

Part Number: MCL-560300

Not Yet Reviewed

Estimated Ship Date: Mar 25, 2026 if ordered today

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Estimated Ship Date: Mar 25, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

RAM Billet Aluminum 153-Tooth Flywheel 2511

5 out of 5 stars ( 7 )

Estimated Ship Date: Monday 2/23/2026

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Dorman Flywheel Fasteners 14557

Flywheel Fasteners, 12-point, 7/16-20 in. Thread, Steel, Black, AMC, Ford, GM, Set of 6

Part Number: RNB-14557

4.0 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

Dura-Bond Automatic Transmission Bushings GMT-3-2TG

Automatic Transmission Bushings, Extension Housing, GM Transmission, Each

Part Number: DUR-GMT-3-2TG

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

Timken Differential Carrier Bearing Races 02820

Differential Bearing Race, 2.875 in. Diameter, Each

Part Number: TMK-02820

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 Full Spools FS10-28

Spool, Full Size, Steel, 28-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: MGR-FS10-28

4.67 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 Crush Sleeves 19-0004-1

Differential Crush Sleeve; Fits GM 8.5 in.

Part Number: RMG-19-0004-1

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

TCI PRO-X Transmission Overflow Canisters 228005

Transmission Overflow Tank, Pro-X, Aluminum, Black, 1 qt. Capacity, GM TH400, Each

Part Number: TCI-228005

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 2,800-3,200 Stall Torque Converter 20413

Torque Converter, Holeshot, 2,800-3,200 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20413

3.67 out of 5 stars ( 6 )

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 Twister Full Race 2,400-2,800 Stall Torque Converter 97-1D24F

Torque Converters, Twister Full Race, 2,400-2,800 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevrolet THM400, Buick, Chevy, Jeep, Each

Part Number: HAY-97-1D24F

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

Yukon Gear & Axle Pinion Shims SK GM14T

Pinion Shims, Steel, GM 10.5 in. (14-bolt), Kit

Part Number: YGA-55058

5.0 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

ATP Automatic Transmission Governor Seals SO-40

Automatic Transmission Rebuild Components, LCS Governor Cover Gasket, 3.25 in. Diameter, Rubber, GM, TH350, TH200C, THM700-R4/4L60/MD8, Each

Part Number: ATP-SO40

5.0 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