1981 CHEVROLET K20 Transmissions

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

Flywheel, Replacement, 168-tooth, 6-bolt, Cast Iron, 14.150 in. Diameter, Chevrolet, Each

Part Number: SXR-NFW1007

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

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Flywheels, Billet Aluminum, 168-tooth, 14 lbs., Internal Engine Balance, SFI 1.1, Chevy, Each

Part Number: HAY-20-130HYS

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Detent Cable, Black, 38.0 in. Length, for TH250C or TH350C, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: ATP-Y233

4.5 out of 5 stars ( 16 )

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

Clutch Fork Pivot Ball GM

Part Number: IST-BHG-SH097

Not Yet Reviewed

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

Flywheel, Steel, 153-Tooth, 30 lb., Internal Balance, Chevy, Big, Small Block, Each

Part Number: HAY-10-330

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 16, 2026 if ordered today

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Torque Converters, Twister Full Race, 3,600-4,200 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevrolet THM400, Buick, Chevy, Jeep, Each

Part Number: HAY-97-1D36F

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Hydraulic Throwout Bearing Conversion Kits, Hydramax Hydraulic Clutch Release Systems, Blue Aluminum Slave Cylinder, Reservoir, Chevrolet, GMC, Kit

Part Number: AWR-HMGM40006

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

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Automatic Transmission Kickdown Cable, Hi-Tech, Natural Braided Stainless Steel, Polished Aluminum Fittings, GM, TH350, Kit

Part Number: LOK-KDP-2350HT

5.0 out of 5 stars ( 2 )

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

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Specialty Components, TH400 Reverse Cushion Kit

Part Number: TRG-400RK

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

Torque Converters, Twister Full Race, 2,800-3,200 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevrolet THM400, Buick, Chevy, Jeep, Each

Part Number: HAY-97-1D28F

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 13, 2026 if ordered today

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CLUTCH KIT

Part Number: SXR-K1877-09

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Estimated Ship Date: Mar 17, 2026 if ordered today

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Transmission Fluid Dipstick Components, Dipstick Tube Seal, Rubber, 0.68 in. I.D., 0.87 in. O.D., GM, Each

Part Number: ATP-SO33

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

Automatic Transmission Kickdown Cable, Hi-Tech, Natural Braided Stainless Steel, Natural Aluminum Fittings, GM, TH350, Kit

Part Number: LOK-KD-2350TP

5.0 out of 5 stars ( 3 )

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

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Tube Seals, Transmission Fluid Dipstick Components, GM, Set of 5

Part Number: PIO-760014-5

3.33 out of 5 stars ( 3 )

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

Clutch Kit, Concept 10.5 Dual-Disc Clutch, 1 1/8 in. Input, 10-Spline, Organic, AMC, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: RAM-50-2122

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Kit Thrust Washers GM TH400

Part Number: TCI-243600

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Apr 1, 2026 if ordered today

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Clutch, Street/Strip, General Motors, V6/L6, Each

Part Number: HAY-85-113

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 16, 2026 if ordered today

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Clutch Kit, Super StreetPro, 1.125 in. - 26-spline, Organic/Ceramic Disc, Pressure Plate, Chevy, Kit

Part Number: MCL-75231

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

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Clutch Kit, Organic, 1 1/8 in. Diameter Shaft, 26-Spline, 11 in. Diameter Disc, Buick, Chevy, GMC, Pontiac

Part Number: HAY-85-112

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Mar 16, 2026 if ordered today

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FLYWHEEL SHIM .050

Part Number: PIO-FWS-28

1.0 out of 5 stars ( 2 )

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

Pilot Bushing, Bronze, 1.125 in. Diameter, Chevy, Oldsmobile, Each

Part Number: MCL-8-1094-4

4.25 out of 5 stars ( 4 )

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

Flywheel, Steel, Chevy, GMC, Each

Part Number: LUK-LFW104

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Estimated Ship Date: Mar 30, 2026 if ordered today

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Clutch Kit, DFX, Performance, Single Disc, 10-Spline, 1.125 in. Diameter, 11 in. Disc Diameter, Cerametallic, 6-Paddle, Sprung Hub, Kit

Part Number: CTF-315735552

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Hays Street 450 Clutch 10.5" 70-84 Chevy/Pontiac/Olds V8, 26-spline, Kit

Part Number: HAY-91-1003

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Estimated Ship Date: Mar 16, 2026 if ordered today

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