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

USA Standard Gear Spools and Mini Spools ZP FSM20-3-29

USA Standard steel spool for Model 20 with 29 spline axles, 3.08 & up

Part Number: SPZ-59020

Not Yet Reviewed

Estimated Ship Date: Apr 15, 2026 if ordered today

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Estimated Ship Date: Apr 15, 2026 if ordered today

Yukon Gear & Axle Ring and Pinion Gears YGK2331

Ring and Pinion Gears and Installation Kit, 8.5" GM 3.73 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12622

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

Yukon Gear & Axle Ring and Pinion Gears YGK2330

Ring and Pinion Gears and Installation Kit, 8.5" GM 3.42 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12621

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

Crown Automotive Differential Carrier Bearings J8126500

Crown Automotive Differential Carrier Bearings J8126500

Differential Carrier Bearings, Two Bearings, Two Races, Jeep, Kit

Part Number: CWA-J8126500

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Motive Gear Ring Gear Spacers 085050

Ring Gear Spacer, 0.200 in. Thick, 10-bolt, GM 8.5 in., Each

Part Number: MGR-085050

4.5 out of 5 stars ( 6 )

Estimated Ship Date: Apr 16, 2026 if ordered today

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Estimated Ship Date: Apr 16, 2026 if ordered today

Yukon Gear & Axle Differential Pinion Nuts YSPPN-012

Differential Pinion Nut, 7/8 in.-20 Thread, Steel, Each

Part Number: YGA-33146

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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USA Standard Gear Master Overhaul Kits ZK D44-REAR

USA Standard Master Overhaul kit Dana 44 differential, 30 spline, rear axle

Part Number: SPZ-37015

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

SVL Drivetrain Ring and Pinion Gear Sets 2023932 GM 10.5 in. (14-bolt) 4.56 Gears

Ring and Pinion Gears, 4.56:1 Ratio, 30-spline, Standard Rotation, GM 10.5 in. (14-bolt), Set

Part Number: SVL-2023932

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

Spicer Drivetrain Products Front Axle Shafts 27902-35X

Front Axle Shaft Overall Length:34.75

Part Number: SDH-27902-35X

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

Motive Gear Spline Differential Carrier Cases Dana 30 D30-CL

Differential Carriers, Dana 30, 3-Series, Open Differential, 10-bolt, Steel, AMC, Ford, International, Jeep, Lincoln, Mercury, Each

Part Number: MGR-D30-CL

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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TeraFlex 10 Bolt Dana 30 Differential Cover 3990630

Differential Cover, 10-bolt, Ductile Iron, Black, Dana 30, Each

Part Number: TMI-3990630

4.5 out of 5 stars ( 2 )

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 Spider Gear Kits YPKGM8.5-S-30

Spider Gears, Internal Kit, Front or Rear, Side Gears, Cross Shaft Pin and Bolt, GM, 8.5 in., 30 Spline, Kit

Part Number: YGA-16055

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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USA Standard Gear ZG Series Ring and Pinion Sets ZG F9-370 Ford 9 in. 3.70 Gears

Ring and Pinion Gears, 3.70:1 Ratio, Standard Ring Gear Rotation, Ford 9 in., Set

Part Number: SPZ-36137

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Powertrax Differential Spring Rebuild Kits 8001001KAV

Replcement Springs, Powertrax No-Slip, Kit

Part Number: PWT-8001001KAV

4.93 out of 5 stars ( 15 )

Estimated Ship Date: Tomorrow

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Dorman Pinion Shaft Fasteners 81048

Differential Shaft Lock Bolt, Steel, Cadillac, Chevy, GMC, Ford, Mercury, Each

Part Number: RNB-81048

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Auburn Gear Select-A-Loc 29 Spline Differential AMC Model 20 545006

Differential, Auburn, Locker, 29-Spline, AMC 20, 12-Bolt, Each

Part Number: AUB-545006

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 Spider Gear Kits YPKM35-S-27-1.5

Spider Gear Kit, Open Differential, Dana 35, 27 Spline, Kit

Part Number: YGA-16128

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Spicer Drivetrain Products Pinion Bearings 706045X

Differential Pinion Bearing Kit (Cup/Cone) - Dana 60/70

Part Number: SDH-706045X

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Richmond Gear EXCel Ring and Pinion Sets GM105373 GM 10.5 in. (14-bolt) 3.73 Gears

Ring and Pinion Gears, EXCel, 3.73:1 Ratio, 30-spline, Standard Rotation, GM 10.5 in., Chevy, GMC, Rear, Set

Part Number: RMG-GM105373

Not Yet Reviewed

Estimated Ship Date: Apr 15, 2026 if ordered today

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Estimated Ship Date: Apr 15, 2026 if ordered today

Yukon Gear & Axle Pinion Shims SK T8

Pinion depth shim kit for Toyota8", GM 7.5", 8.2" & 12 bolt truck

Part Number: YGA-55064

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Spicer Drivetrain Products Pinion Oil Slingers and Baffles 32349

Outer Pinion Bearing Oil Slinger, Dana 30, Dana Super 30, Dana 25, Dana 27, Dana 44, Front, Rear, Each

Part Number: SDH-32349

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Yukon Gear & Axle Ring and Pinion Sets YG GM14T-321 GM 10.5 in. (14-bolt) 3.21 Gears

Ring and Pinion Gears, GM 10.5 in. (14-bolt), 3.21:1 Ratio, 30-spline, Standard Ring Gear Rotation, Rear, Chevrolet, GMC, Set

Part Number: YGA-24465

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Motive Gear Ten Factory Axle Shafts MG27122

Axle Shaft, Direct Fit, 1541H Alloy Steel, 28-Spline, 30.125 in. Length, Chevy, Pontiac, Each

Part Number: MGR-MG27122

Not Yet Reviewed

Estimated Ship Date: Apr 16, 2026 if ordered today

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Estimated Ship Date: Apr 16, 2026 if ordered today

National Bearing Pinion Bearings M88048

Bearing, Pinion, 1.312 in. Inside Diameter, Each

Part Number: NTL-M88048

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Yukon Gear & Axle 4340 Chromoly Axles for 1978-1979 BRONCO, 1976-1979 F-150 - YA W24134

Axle Shafts, 4340 Chromoly, Inner/Outer/U-Joints, Front, 30-Spline, Dana 44, Ford, Kit

Part Number: YGA-21333

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