Differentials, Axles & Rear-End Parts

Differential, Detroit Truetrac, 29-Spline, Hummer/AMC 20 IRS, 3.08:1 + Higher, Each

Part Number: ETN-912A579

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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• $75 Summit Bucks

Gear, Ring and Pinion, 4.11:1 Ratio, Ford, 9 in., Set

Part Number: RMG-79-0045-1

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Differential, Eaton Detroit Truetrac, 33-Spline, GM 8.875 in., Each

Part Number: ETN-914A576

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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• $75 Summit Bucks

Differential Cover, Aluminum, Natural, Bearing Cap Support, GM, 8.2 in., 8.5 in., 10-Bolt, Each

Part Number: SME-8510300NL

4.72 out of 5 stars ( 47 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Gear, Ring and Pinion, 4.11:1 Ratio, Ford, 9 in., Set

Part Number: RMG-6901791

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Differential, Posi Performance, Limited Slip, 30-Spline, GM, 12-Bolt, 4 Series, Each

Part Number: ETN-19555-010

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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

Part Number: SUM-730503N

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Axle Assemblies, Ford 9 in., Satin Black, 54.75 in. Flange to Flange, 31-Spline Axles, 1541H Alloy, Chevy, Pontiac, Kit

Part Number: ART-11169683

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Center Section, 9 in. Ford, Nodular Iron, Trak-Lok, 31-Spline Axle, 3.70:1 Ratio, Each

Part Number: MSR-3MNC31AN370

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Differential, Eaton Detroit Truetrac, Limited Slip, 30-Spline, 3.92:1 and Up Only, Dana 44, Each

Part Number: ETN-913A590

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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• $75 Summit Bucks

Differential Cover, Aluminum, Natural, GM, 8.875 in. Truck, Kit

Part Number: MSR-7111

4.6 out of 5 stars ( 55 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Differential, Electronic Locker, ELocker, 27-Spline, Dana 30, 3-Series, Each

Part Number: ETN-19818-020

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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• $150 Summit Bucks

Differential Cover, Aluminum, Natural, GM, 8.5/8.2 in., Kit

Part Number: MSR-7107

4.65 out of 5 stars ( 102 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Ring and Pinion Gears, EXCel, 4.10:1 Ratio, 30-spline, Standard Rotation, GM 8.5 in., GM 8.6 in., Set

Part Number: RMG-GM85410

4.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/16/2026 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 2/16/2026 if shipped by air

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Axle Shafts, GM Genuine Parts, CV-style, 33-spline Outer, Steel, 25.50 in. Length, Front, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-85083496

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Ring and Pinion Gear Installation Kit, Master Overhaul, 30 Spline, GM 8.875 in., Passenger Car, Kit

Part Number: YGA-14067

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Ring and Pinion Installation Kit, Ford, 8.8 in., 8.8 in. IRS, Kit

Part Number: FMS-M-4210-B2

4.57 out of 5 stars ( 21 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Differential, Eaton Detroit Truetrac, Limited Slip, 34-Spline, 3.31:1 and Higher Only, Ford 8.8, Each

Part Number: ETN-917A739

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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• $75 Summit Bucks

Wiring Harness, Jeep JL/JT Z-Locker OEM Controller Harness, for Use with OEM Lockers, Jeep, Each

Part Number: ZAU-Z-LKR-OEM

5.0 out of 5 stars ( 29 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Third Member, 4.11:1 Gear Ratio, Currie TwinTrac, 31-Spline, Nodular Iron Case, Big Bearing Pinion Support, 1350 Yoke, Each

Part Number: CUR-CE-9CT411S50

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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

Part Number: SUM-730503B

3.92 out of 5 stars ( 13 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Ring and Pinion Gear Installation Kit, Master Overhaul, 30 Spline, GM 8.875 in., Truck, Kit

Part Number: YGA-14068

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Differential Covers, Differential Cover Kits, Dana 44, 10-bolt, Nodular Iron, Silver Hammertone Powdercoated, Bolts, Gaskets, Kit

Part Number: SDH-10023536

4.95 out of 5 stars ( 21 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Differential, Eaton Detroit Truetrac, 27-Spline, Dana 35, Jeep, Each

Part Number: ETN-912A569

4.64 out of 5 stars ( 11 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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• $75 Summit Bucks