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

Dorman Axle Shafts 630-125

Axle, Rear, 28-Spline, 31.375 in. Length, Chevy, GMC, 8.5 in. Axle, Each

Part Number: RNB-630-125

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

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Richmond Gear EXCel OEM Replacement Axle Shafts 92-25178

5 out of 5 stars ( 4 )

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Motive Gear Ring and Pinion Sets AM20-331 AMC Model 20 3.31 Gears

Gear, Ring and Pinion, 3.31:1 Ratio, AMC, Model 20, Set

Part Number: MGR-AM20-331

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 AM20-354 AMC Model 20 3.54 Gears

Gear, Ring and Pinion, 3.54:1 Ratio, AMC, Model 20, Set

Part Number: MGR-AM20-354

3.5 out of 5 stars ( 4 )

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Alloy USA OEM Replacement Rear Axles for 1976-1983 CJ5, 1976-1981 CJ7, 1981 SCRAMBLER - 21101

Axle, Direct Fit, 4140 Chromoly, 29-Spline, Jeep, AMC Model 20, Each

Part Number: ALY-21101

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 Differential Bearing Kits R30R

Ring and Pinion Installation Kit, Dana 30, 26-Spline Pinion, Kit

Part Number: MGR-R30R

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

Mr. Gasket Chrome 10 Bolt GM 7.5/7.6/7.625 Inch Differential Cover 9896

Differential Cover, Steel, Chrome, GM, 7.5 in., 7.625 in., 10-Bolt, Kit

Part Number: MRG-9896

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Motive Gear Ten Factory Axle Shafts MG27123

Axle Shaft, Direct Fit, 1541H Alloy Steel, GM 8.5, 28-Spline, 30.437 in. Length, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: MGR-MG27123

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USA Standard Gear ZG Series Ring and Pinion Sets ZG GM8.5-430 GM 8.5/8.6 in. 4.30 Gears

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

Part Number: SPZ-36217

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

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Estimated Ship Date: Apr 9, 2026 if ordered today

Motive Gear Ring and Pinion Sets D60-456X Dana 60 4.56 Gears

Ring and Pinion Gears, Thick Ring Gear, 4.56:1 Ratio, 29-spline, Standard Ring Gear Rotation, Dana 60, Set

Part Number: MGR-D60-456X

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 Differential Carrier Replacement Parts YSPTW-043

Thrust Washer, Differential Carrier Replacement Part, GM 8.875 in. (12-bolt), Each

Part Number: YGA-33381

Not Yet Reviewed

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Spicer Drivetrain Products Differential Cover Bolts 34822

Differential Cover Bolts, Steel, Black, Hex, Each

Part Number: SDH-34822

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Mile Marker Hub Nut Conversion Kits 95-29918

Hub Conversion, Auto to Manual, Toyota, Kit

Part Number: MMK-95-29918

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Apr 15, 2026 if ordered today

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Estimated Ship Date: Apr 15, 2026 if ordered today

Dorman Pinion Crush Sleeves 81056

Pinion Crush Sleeves, Steel, Ford, 8.8 in., Pair

Part Number: RNB-81056

Not Yet Reviewed

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Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-273 GM 8.5/8.6 in. 2.73 Gears

Ring and Pinion Gear, 2.73:1 Ratio, GM 8.5/8.6, 10 Bolt Cover, 30 Spline, 10 Ring Gear Bolts, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Set

Part Number: YGA-24490

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

Yukon Gear & Axle Ring and Pinion Sets YG D60-456 Dana 60 4.56 Gears

Ring and Pinion Gears, 4.56:1 Ratio, 29-spline, Standard Ring Gear Rotation, Dana 60, Set

Part Number: YGA-24061

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

QA1 Narrowed Ford 9 in. Rear Axle Housings for 1970-1981 CAMARO, FIREBIRD - R902N

Axle Assembly, Narrowed, Ford 9 in., Black, 1541H Steel, 31 Spline Axles, F-Body, Second Gen, for use with QA1 4-Link, Chevy, Pontiac, Kit

Part Number: QA1-R902N

Not Yet Reviewed

Estimated Ship Date: Apr 14, 2026 if ordered today

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Estimated Ship Date: Apr 14, 2026 if ordered today

Yukon Gear & Axle Bearing Kits BK F8

Yukon Bearing install kit for Ford 8" differential

Part Number: YGA-11040

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 4340 Chromoly Axles YA W48210

Axle Shaft, Front Inner, 4340 Chromoly, 35 Spline, 35.10 in. Length, Dana 60, Each

Part Number: YGA-21381

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

Dorman Axle Shaft Lock C-Clips 05311

Axle C-Clip, Steel, Copper Coated, GM, 7.5 in./7.625 in. Differential, Each

Part Number: RNB-05311

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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SVL Drivetrain Ring and Pinion Gear Sets 10001282 Dana 44 4.88 Gears

Gear, Ring and Pinion, 4.88:1 Ratio, Dana 44, Set

Part Number: SVL-10001282

Not Yet Reviewed

Estimated Ship Date: Apr 14, 2026 if ordered today

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Estimated Ship Date: Apr 14, 2026 if ordered today

USA Standard Gear Spider Gear Sets ZIKF7.5-S-28

USA Standard Gear standard spider gear set for Ford 7.5"

Part Number: SPZ-39014

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

Yukon Gear & Axle Master Overhaul Kits YK D30-R

Ring and Pinion Installation Kit, 27 Spline, Dana 30, Rear, Kit

Part Number: YGA-14018

Not Yet Reviewed

Estimated Ship Date: May 1, 2026 if ordered today

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Estimated Ship Date: May 1, 2026 if ordered today

Yukon Gear & Axle Differential Carrier Replacement Parts YSPBF-016

Oil Slinger, Differential Carrier Replacement Part, Outer, Each

Part Number: YGA-33015

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Motive Gear Basic Ring and Pinion Gear Installation Kits RA28LR

Ring and Pinion Installation Kit, Basic, Dana 44, Front/Rear, Kit

Part Number: MGR-RA28LR

4.0 out of 5 stars ( 1 )

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 T7.5-456 Toyota 7.5 in. 4.56 Gears

Ring and Pinion Gears, 4.56:1 Ratio, 23-spline, Standard Rotation, Toyota 7.5 in., Toyota 7.5 in. IFS, Set

Part Number: YGA-24186

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 24, 2026 if ordered today

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Estimated Ship Date: Apr 24, 2026 if ordered today