1981 GMC K1500 Transmission & Drivetrain

Flexplate Ring Gear, 168-Tooth, Replacement, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: ATP-ZA500

4.83 out of 5 stars ( 12 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Clutch Kit, 5/6-Speed Conversion, Organic, 1 .125 in.-26-Spline, 10.5 in. Diameter Disc, Buick, Checker, Chevy, GMC, Pontiac, Oldsmobile, Kit

Part Number: HAY-83-1100

Not Yet Reviewed

Estimated Ship Date: Mar 27, 2026 if ordered today

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Universal Joint, Steel, Buick, Cadillac, Chevrolet, Ford, GMC, Oldsmobile, Pontiac, Each

Part Number: ADO-45U0103

Not Yet Reviewed

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Differential, Posi Performance, Limited Slip, 30-Spline, 2.76-3.42 Gear Ratios, GM, 12-Bolt, Each

Part Number: HUU-02-124

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

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Transmission Solenoid, Detent Solenoid, Downshift, Kickdown, GM, Each

Part Number: SMP-SZ1

3.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Differential Cover, 10-bolt, Aluminum, Polished, GM 8.5 in., Each

Part Number: YGA-32029

Not Yet Reviewed

Estimated Ship Date: Monday 3/9/2026 if shipped by air

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U-Joint, Spicer 1350 Universal Joint Style, Greasable, Steel, Round Plain Bearing Caps, AMC, Buick, Chevrolet, Dodge, Ford, GMC, Jeep, Pontiac, Each

Part Number: YGA-42010

Not Yet Reviewed

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Axle Shaft, OEM Replacement, 28-Spline, 31.5 in. Length, Chevy, GMC, 8.5 in., Rear, Each

Part Number: RMG-92-25184

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

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USA Standard Master Overhaul kit for the GM 8.5 front differential

Part Number: SPZ-37056

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

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Ring and Pinion Installation Kit, GM, 10-Bolt, 8.5 in. Diameter Ring Gear, 30-Spline Pinion, Kit

Part Number: RMG-831021B

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Differential Pinion Bearing Kit, GM 8.875 in. Truck, Koyo Bearings, Chevy, GMC, Kit

Part Number: MGR-R12RPK

Not Yet Reviewed

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Carrier Shims, Super, Steel, Kit

Part Number: YGA-55001

4.87 out of 5 stars ( 15 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Automatic Transmission Filter, TH400, AM General, Buick, Cadillac, Checker, Chevy, Ferrari, GMC, Jaguar, Each

Part Number: ADO-TF231

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Yukon positraction internals for GM 12 bolt car and truck with 33 spline axles

Part Number: YGA-16040

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

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Replacement Springs, Powertrax Lock-Right, Kit

Part Number: PWT-1025350KAP

4.73 out of 5 stars ( 15 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Clutch Pilot Bushing, Solid, Powdered Metal, Each

Part Number: RNB-14650

3.71 out of 5 stars ( 7 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

U-Joint, Lifetime Series, Spicer 1350 Style, Steel, AMC, Buick, Cadillac, Chevy, Chrysler, Dodge, Ford, GMC, Jeep, Mercury, Olds, Pontiac, Each

Part Number: YGA-42021

Not Yet Reviewed

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Differential Cover, 10-bolt, Aluminum, Polished, GM 8.2 in., GM 8.5 in., GM 8.6 in., Each

Part Number: YGA-32030

3.5 out of 5 stars ( 8 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

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Axle Shaft, Rear, C-Clip, 1541H Alloy, 28 Spline, 31.500 in. Length, GM 8.5 in., Chevy/GMC, Pickup/SUV, Each

Part Number: YGA-21254

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Bearing Race, Differential Pinion, 3.000 in. Diameter, Each

Part Number: TMK-HM89410

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Kit Thrust Washers GM TH350

Part Number: TCI-313600

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

Differential Pinion Yoke, 1350, 30 Spline, Steel, GM 8.5 in., Each.

Part Number: YGA-41093

Not Yet Reviewed

Estimated Ship Date: Monday 3/9/2026 if shipped by air

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Automatic Shifter, Megashifter, Right Hand Drive Models, Chevy, Mopar, Ford, Lincoln, Mercury, Each

Part Number: BMM-80685

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

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

Part Number: QTI-RM-922

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air

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U-Joint "Super Strength 1310-WJ Style, Greasable, Steel, Each

Part Number: MOG-377

4.67 out of 5 stars ( 18 )

Estimated Ship Date: Monday 3/9/2026 if shipped by air