1985 GMC Differential & Rear-End Components

Differential Cover, Aluminum, Polished, GM, 12-Bolt 8.875 in., Truck, Kit

Part Number: SUM-730503

4.53 out of 5 stars ( 15 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, EXCel, 3.42:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75342OE

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Axle Shaft, Front Outer, 35-spline, Steel, 12.000 in. Length, Dana 60, Chevy, GMC, Each

Part Number: SDH-3-82-871

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Spartan Differential Locker, GM 8.5 in., 28-spline Axle, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: SPZ-17040

5.0 out of 5 stars ( 5 )

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Differential Carrier Rebuild Kits and Spider Gears, Spider Gear Sets, GM 8.875 in. (12-bolt), Car/Truck, 30-spline, Buick, Chevy, GMC, Pontiac, Kit

Part Number: SPZ-39021

5.0 out of 5 stars ( 3 )

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Gear, Ring and Pinion, EXCel, 3.73:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75373TK

3.0 out of 5 stars ( 2 )

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Gear, Ring and Pinion, 4.30:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-430

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 18, 2026 if ordered today

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Axles, Direct Fit, C-Clip, Rear, 1541H Steel, 26-Spline, Chevy, Pickup, 7.5 in., Pair

Part Number: MSR-A102607

5.0 out of 5 stars ( 5 )

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Gear, Ring and Pinion, 4.88:1 Ratio, Dana 60, Set

Part Number: RMG-6900541

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Differential Cover, 12-bolt, Steel, Chrome, GM 8.875 in. Truck, Each

Part Number: YGA-32012

4.33 out of 5 stars ( 3 )

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Ring and Pinion Installation Kit, Master Kit, Dana 60, Kit

Part Number: MGR-RA29RMK

5.0 out of 5 stars ( 1 )

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Differential Cover, 10-bolt, Nodular Iron, Black Powdercoated, GM 8.5 in., Each

Part Number: ARB-0750007B

4.0 out of 5 stars ( 2 )

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Carrier Shims, Steel, Ford 8.8 in., GM, 8.0, 8.6, 8.75, 8.875 in., Kit

Part Number: YGA-55002

4.79 out of 5 stars ( 19 )

Estimated Ship Date: Today

Axles, Replacement, Driver Side, Passenger Side, Rear, Chevy, GMC, 8.5 in., Pair

Part Number: MSR-A30-88GMTK

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Differential Cover, Perfect Launch, 10-bolt, Aluminum, Black, Dana 60, Each

Part Number: PRO-69504

5.0 out of 5 stars ( 2 )

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Differential, Auburn, Grip-N-Loc, Limited Slip, 28-Spline, GM, 8.5 in., 8.6 in., Each

Part Number: AUB-546050

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Differential Cover, 10-bolt, Black, Dana 50, Dana 60, Dana 70, Dana 70-HD, Dana 70-U, Dana Super 70, Each

Part Number: YGA-32352

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Ring and Pinion Installation Kit, Master Kit, GM, 8.5 in., Kit

Part Number: MGR-R10REMK

4.0 out of 5 stars ( 2 )

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Ring and Pinion Installation Kit, GM 8.5 in., (truck,front), Kit

Part Number: YGA-14087

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Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901691

4.6 out of 5 stars ( 5 )

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Pinion Bearing, 1.187 in. Inside Diameter, Each

Part Number: TMK-M86649

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Mini spool for GM 12 bolt with 30 spline axles

Part Number: YGA-32227

4.0 out of 5 stars ( 2 )

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Gear, Ring and Pinion, 3.08:1 Ratio, GM, 7.5 in./7.625 in., 2 Series, Set

Part Number: MGR-G875308

4.0 out of 5 stars ( 4 )

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Gear, Ring and Pinion, 2.73:1 Ratio, GM 7.5/7.625 in., Set

Part Number: RNB-697-713

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Axle Shaft, Front Outer Stub, 4340 Chromoly, 35 Spline, 12.00 in. Length, Dana 60, Each

Part Number: YGA-21373

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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