GMC Differential & Rear-End Components

Gear, Ring and Pinion, EXCel, 3.42:1 Ratio, GM, 8.875 in., 12-Bolt Truck, Set

Part Number: RMG-12BT342

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Locking Hubs, Manual, Standard, Aluminum, Chrome, Polished Dial, Chevy, Dodge, Ford, International, Jeep, Pair

Part Number: WRN-9790

4.66 out of 5 stars ( 29 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Gear, Ring and Pinion, EXCel, 3.42:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: RMG-GM85342

4.4 out of 5 stars ( 5 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Locking Hubs, Manual, Supreme, Aluminum, Chrome, Chevy, Dodge, Ford, GMC, International, Jeep, Pair

Part Number: MMK-423

4.71 out of 5 stars ( 14 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Differential, Eaton Detroit Truetrac, 26-Spline, GM, 7.5 in., 3:08 and Down, Each

Part Number: ETN-911A415

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Differential Carrier, Positraction, Nodular Iron, GM 8.5/8.6 in., 30 Spline, 2.73 Up Ratio, Each

Part Number: SUM-730968

5.0 out of 5 stars ( 10 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Grizzly Locker, GM 10.5 in., 30 Spline, Each

Part Number: YGA-28015

4.22 out of 5 stars ( 9 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Ring and Pinion Gear Installation Kit, Master Overhaul, 28-Spline, GM 8.5 in., Kit

Part Number: YGA-14086

4.67 out of 5 stars ( 12 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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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-GM75373OE

4.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Axle Shafts, Direct-Fit, New, Heavy Duty Thermoplastic Outer Boot, Front Left or Right, Cadillac, Chevrolet, GMC, Each

Part Number: AAZ-66-1009HD

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

Axles, Rear, 1541H Alloy Steel, 30-Spline, Chevy, GMC, Truck 12-Bolt, .875 in., 31.313 in. Length, Pair

Part Number: MSR-A30-70GMT2

3.83 out of 5 stars ( 6 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 12-Bolt, Truck, Set

Part Number: MGR-GM12-373

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Differential Carrier, Air Locker, Nodular Iron, 30-spline, Rear, GM 10.5 in. (14-bolt), Chevy, GMC, Kit

Part Number: ARB-RD114

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Gear, Ring and Pinion, 3.42:1 Ratio, GM, 8.875 in. Truck, Set

Part Number: MGR-GM12-342

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Differential, Posi Performance, Limited Slip, 30-Spline, 12-Bolt, 4 Series, Chevy, GMC, Truck, Each

Part Number: ETN-19556-010

4.5 out of 5 stars ( 8 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Differential, GM 8.5/8.625 in., Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Saab, Rear, Each

Part Number: ADO-84554713

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Front Axle Actuator, Posi-Lok, Chevy, GMC, Kit

Part Number: POS-600

4.52 out of 5 stars ( 62 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Pinion Bearing Spacer, Crush Sleeve Eliminator, Steel, Chrysler 9.25 in., GM 8.5 in., Each

Part Number: YGA-55048

4.85 out of 5 stars ( 26 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

Differential, Posi Performance, Limited Slip, 28-Spline, for use on GM, 7.625 in., Each

Part Number: ETN-19599-010

4.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Differential, Grip Pro Traction System, 30-Spline, GM 8.5in., 8.6 in., Each

Part Number: PWT-GT201030

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Axle C-Clip, 1.550 in. O.D,, 0.800 in. I.D., 0.150 in. Thick, Steel, Natural Finish, Each

Part Number: YGA-33083

4.89 out of 5 stars ( 38 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

Bearing, Pinion, 1.625 in. Inside Diameter, Each

Part Number: TMK-M802048

4.67 out of 5 stars ( 30 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

Differential Cover, Ram-Air, Black Ops, Chevy, GMC, Ram, AAM 11.5/11.8 ring gear, 14-Bolt rear axle, Each

Part Number: GBE-19269

4.55 out of 5 stars ( 11 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Differential Carrier, Air Locker, Nodular Iron, Dana 60-HD, Kit

Part Number: ARB-RD166

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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

Part Number: RMG-79-0068-1

3.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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