1978 Differential & Rear-End Components Transmission & Drivetrain - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Motive Gear Full Spools FS9-28LW

Spool, Full Size, Steel, 28-Spline, 10-Bolt, Ford 9 in., Each

Part Number: MGR-FS9-28LW

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

USA Standard Gear Master Overhaul Kits ZK C8.25-B

USA Standard Master Overhaul kit for the Chrysler '76 and later 8.25" differential

Part Number: SPZ-37001

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Summit Racing™ Positraction 32 Spline Differential Carriers Dana 60/61 SUM-730979

Differential Carrier, Positraction, Nodular Iron, Dana 60, Dana 61, 32 Spline, 4 Series, Each

Part Number: SUM-730979

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Dorman Axle Shafts 630-140

Axle, Rear, 28-Spline, 29.625 in. Length, Buick, Cadillac, Chevy, Oldsmobile, Pontiac, 8.50 in. Axle, Each

Part Number: RNB-630-140

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

RT Off-Road Differential Pinion Shaft Nuts J3182601

Differential Pinion Shaft Nut, Steel, Natural, Dodge, Jeep, Each

Part Number: RTO-J3182601

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Summit Racing™ Axle Upgrade Combos 35-0002

Axle Upgrade Combo, Dana 60, 35 Spline, Spicer Greasable U-Joints, Spicer Axle Shafts, Manual Hubs, Kit

Part Number: CMB-35-0002

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Dorman Pinion Crush Sleeves 81058

Pinion Crush Sleeves, Steel, GM, 7.5 in., 7.6 in., 7.625 in., Pair

Part Number: RNB-81058

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Motive Gear Ring and Pinion Sets F9-620A Ford 9 in. 6.20 Gears

Ring and Pinion-Ford 9

Part Number: MGR-F9-620A

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-308 GM 8.5/8.6 in. 3.08 Gears

Ring and Pinion Gears, 3.08:1 Ratio, 30-spline, Standard Rotation, GM 8.5/8.6 in., Set

Part Number: YGA-24492

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Yukon Gear & Axle 10 Bolt Ford 7.5 Inch Differential Cover YP C1-F7.5

Differential Cover, 10-bolt, Steel, Chrome, Ford 7.5 in., Each

Part Number: YGA-32008

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Yukon Gear & Axle Spider Gear Kits YPKD60-S-35

Spider Gear Kit, Open Differential, Dana 60/61, 35 Spline, Kit

Part Number: YGA-16085

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Auburn Gear Grip-N-Loc 28 Spline Differential Ford 8 Inch 546059

Auburn Gear Grip-N-Loc 28 Spline Differential Ford 8 Inch 546059

Differential, Auburn, Grip-N-Loc, Limited Slip, 28-Spline, Ford, 8 in., Each

Part Number: AUB-546059

5.0 out of 5 stars ( 1 )

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Alloy USA Chromoly Front Axle Shaft Kits for 1972-1983 CJ5, 1976-1981 CJ7, 1981 SCRAMBLER - 12139

Axles, Direct Fit, Front, 4340 Chromoly, 27-Spline, Jeep, Dana 30, Kit

Part Number: ALY-12139

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Motive Gear Performance Ring and Pinion Sets G975390 GM 7.5/7.625 in. 3.90 Gears

Ring and Pinion Gears, Pro Series, 3.90:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-G975390

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Motive Gear Ring and Pinion Sets D70-513 Dana 70 5.13 Gears

Gear, Ring and Pinion, 5.13:1 Ratio, Dana 70, Set

Part Number: MGR-D70-513

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Yukon Gear & Axle Spider Gear Kits YPKF7.5-S-28

Spider Gear Kit, Open Differential, Ford 7.5 in., 28 Spline, Kit

Part Number: YGA-16014

5.0 out of 5 stars ( 2 )

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2230 GM 8.875 in. (12-bolt) truck 4.11 Gears

Ring and Pinion Gears,USA Standard 8.875" GM 12 Bolt Truck, 4.11 Ratio Thick Rear Ring & Pinion GearInstall Kit Axle Bearings & Seals

Part Number: SPZ-10685

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

USA Standard Gear Spartan Lockers Toyota 9.5 Inch SL TLC-30

Spartan Differential Locker, Toyota 9.5 in., 30-spline Axle, Toyota, Each

Part Number: SPZ-17033

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Motive Gear Performance Ring and Pinion Sets G885308 GM 8.5/8.6 in. 3.08 Gears

Gear, Ring and Pinion, 3.08:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885308

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Allstar Performance Ring and Pinion Gear Sets ALL70120 GM 8.5/8.6 in. 3.08 Gears

5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Yukon Gear & Axle 1541H Alloy Axles YA G1255803

Axle Shaft, Rear, 1541H Alloy, 28-Spline, GM 8.2 in., Each

Part Number: YGA-21245

Not Yet Reviewed

Estimated Ship Date: Apr 28, 2026 if ordered today

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Estimated Ship Date: Apr 28, 2026 if ordered today

Yukon Gear & Axle Ring Gear Bolts YSPBLT-010

Ring Gear Bolt, Hex Head, 7/16-20 in. Thread Size, Steel, Natural, Each

Part Number: YGA-33040

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2185 Chrysler 8.25 in. 3.07 Gears

Ring and Pinion Gears,USA Standard 8.25" CHRYSLER, 3.07 Ratio Rear Ring & Pinion GearInstall Kit 1.62" ID Axle Bearings & Seals

Part Number: SPZ-10898

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Motive Gear Differential Carrier Clutches F9-CPK

Differential Parts Kit

Part Number: MGR-F9-CPK

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Yukon Gear & Axle Pinion Installation Kits PK GM12T

Yukon Pinion install kit for GM 12 bolt truck differential

Part Number: YGA-13057

Not Yet Reviewed

Estimated Ship Date: May 4, 2026 if ordered today

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Estimated Ship Date: May 4, 2026 if ordered today

Yukon Gear & Axle Differential Carrier Replacement Parts YSPTW-042

Thrust Washer, Open Differential, GM 8.875 in. Passenger Car, Truck, Each

Part Number: YGA-33380

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