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

Yukon Gear & Axle Full Spools YP FSGM14T-3-30

Spool, Full, Steel, 30-spline, 14-bolt, GM 10.5 in., 4.10 Gear Ratio and Down, Each

Part Number: YGA-32048

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

Zoom MU Series Clutches MU1909-1C

Clutch, MU Series, 1.125 in. - 10-spline, Cerametallic Disc, Pressure Plate, Chevy, GMC, Kit

Part Number: ZZZ-MU1909-1C

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

Centerforce LMC Pressure Plates LM165552

Pressure Plate, LMC, Diaphragm-Style, 11 in. Disc Diameter, Each

Part Number: CTF-LM165552

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

Centerforce LMC Clutch Discs LM383735

Clutch Disc, LMC, Carbon Composite, 1.125 in.- 10-spline, 11 in. Diameter, AMC, Buick, Chevy, Pontiac, Jeep

Part Number: CTF-LM383735

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

Centerforce LMC Clutch Kits LM735552

Clutch Kit, Carbon Composite, 1 1/8 in. Diameter Shaft, 10-Spline, 11 in. Diameter Disc, GM, Kit

Part Number: CTF-LM735552

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

Dana Spicer Drivetrain Products Spools and Mini Spools 10015373

Performance Mini Spool (GM 8.5 - 28 Spline)

Part Number: SDH-10015373

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

Spicer Drivetrain Products Performance Full Spools 2022498

Performance Spool Gm 10.5" 14 Bolt 30 Spline (4.10 And Down)

Part Number: SDH-2022498

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

South Bend Clutch Stage 2 Endurance Clutch Kits K04535-HD-TZ

Clutch Kit, Stage 2 Endurance, Single, 1.130 in. - 10-spline, Kevlar® Disc, Pressure Plate, Chevy, 5.7L, Kit

Part Number: SBB-K04535-HD-TZ

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

South Bend Clutch Stage 2 Drag Race Clutch Kits K04535-HD-DXD-B

Clutch Kit, Stage 2 Drag Race, Single, 1.130 in. - 10-spline, Ceramic Disc, Pressure Plate, Chevy, 5.7L, Kit

Part Number: SBB-S0308

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

South Bend Clutch Stage 2 Drag Race Clutch Kits K04535-HD-DXD

Clutch Kit, Stage 2 Drag Race, Single, 1.130 in. - 10-spline, Ceramic Disc, Pressure Plate, Chevy, 5.7L, Kit

Part Number: SBB-S0313

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

Dorman Ring and Pinion Installation Kits 697-115

Ring and Pinion Installation Kit, GM, 9.5 in., 14-Bolt, Kit

Part Number: RNB-697-115

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

Dorman Pinion Yokes 697-552

Drive Shaft Pinion Yoke, Differential Pinion Yoke Assembly

Part Number: RNB-697-552

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

USA Standard Gear Spider Gear Sets ZIKGM8.5-S-30

USA Standard Gear standard spider gear set for GM 8.5", 30 spline

Part Number: SPZ-39027

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

USA Standard Gear Ring and Pinion Sets ZG GM8.5-273 GM 8.5/8.6 in. 2.73 Gears

Gear, Ring and Pinion, 2.73:1, GM, 8.5 in., 8.6 in., Set

Part Number: SPZ-36346

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

USA Standard Gear Spools and Mini Spools ZP MINSGM8.5-28

8.5" GM 28spl MINI SPOOL

Part Number: SPZ-59011

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

Sachs Stock Replacement 168-Tooth Flywheel NFW1036

GEAR DRIVEN FLYWHEEL

Part Number: SXR-NFW1036

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

TCI Auto Automatic Transmission Cases 210002

TCI Auto Automatic Transmission Cases 210002

CASE, TH-400 REID SFI

Part Number: TCI-210002

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

USA Standard Gear Spartan Locker Replacement Crosspins SL XP-GM8.5

Crosspin, Replacement, Steel, Spartan, GM 8.5 in., Each

Part Number: SPZ-17024

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

USA Standard Gear Ring and Pinion Sets ZG GM8.5-538 GM 8.5/8.6 in. 5.38 Gears

Ring and Pinion Gears, 5.38:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: SPZ-36221

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

USA Standard Gear Axle Shafts ZA W24120

GM 8.5" 28spl FRONT AXLE KIT, w/ Super-Joint, 79-87 1/2TON TRK & BLAZER (ASSM_REQ)

Part Number: SPZ-35130

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

USA Standard Gear Ring and Pinion Gear Kit Packages ZGK020 GM 10.5 in. (14-bolt) Dana 60 4.88 Gears

This is a complete package that includes front & rear ring & pinion sets along with the most complete master o

Part Number: SPZ-40017

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

USA Standard Gear Ring and Pinion Sets ZG GM9.5-411 GM 9.5 in. 4.11 Gears

Ring and Pinion Gears, 4.11:1 Ratio, 30-spline, Standard Rotation, GM 9.5 in., Chevy, GMC, Hummer, Saab, Rear, Set

Part Number: SPZ-36225

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

Need It Sooner? We recommend these similar substitute parts:

Yukon Gear & Axle Ring and Pinion Sets YG GM9.5-411 GM 9.5 in. 4.11 Gears

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026

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USA Standard Gear Ring and Pinion Gear Kit Packages ZGK044 GM 10.5 in. (14-bolt) Dana 60 5.13 Gears

This is a complete package that includes front & rear ring & pinion sets along with the most complete master o

Part Number: SPZ-40020

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

Richmond Gear EXCel Ring and Pinion Sets GM95410 GM 9.5 in. 4.10 Gears

Gear, Ring and Pinion, 4.10:1 Ratio, GM 9.5 in., Set

Part Number: RMG-GM95410

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

Need It Sooner? We recommend these similar substitute parts:

Yukon Gear & Axle Ring and Pinion Sets YG GM9.5-411 GM 9.5 in. 4.11 Gears

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026

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Richmond Gear Ring and Pinion Installation Half Kits 83-1063-B

Ring and Pinion Installation Kit, GM, 10.5 in., Kit

Part Number: RMG-83-1063-B

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