1966 OLDSMOBILE Differential & Rear-End Components Transmission & Drivetrain - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Richmond Gear EXCel Ring and Pinion Sets 12BC342 GM 8.875 in. (12-bolt) passenger car 3.42 Gears

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

Part Number: RMG-12BC342

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

Motive Gear Basic Ring and Pinion Gear Installation Kits GM12IKC

Ring and Pinion Installation Kit, GM, 12-Bolt Passenger Car, 8.875 in. Open, Kit

Part Number: MGR-GM12IKC

3.0 out of 5 stars ( 1 )

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Motive Gear Differential Pinion Bearing Spacers and Sleeves 4101

SOLID SPACER & SHIM KIT GM12 BOLT CAR

Part Number: MGR-4101

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

Motive Gear Pinion Bearings and Races R12CRPK

Pinion Bearing Kit, PBK GM 8.875" CAR

Part Number: MGR-R12CRPK

Not Yet Reviewed

Estimated Ship Date: Mar 17, 2026 if ordered today

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Estimated Ship Date: Mar 17, 2026 if ordered today

Yukon Gear & Axle Pinion Kits PK GM8.2BOP

Ring and Pinion Gear Installation Kit, Minimum Overhaul, GM, 8.2 in., Kit

Part Number: YGA-13068

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Richmond Gear Differential Carrier Rebuild Kits XL-4058

Differential Carrier Gear Kit

Part Number: RMG-XL-4058

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

Richmond Gear Ring and Pinion Gears 83-1088-1

Ring and Pinion Install Kit

Part Number: RMG-83-1088-1

Not Yet Reviewed

Estimated Ship Date: Mar 17, 2026 if ordered today

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Estimated Ship Date: Mar 17, 2026 if ordered today

Motive Gear Basic Ring and Pinion Gear Installation Kits R12CRT

Ring and Pinion Installation Kit, Basic, GM 8.875 in. 12-Bolt, Rear, Kit

Part Number: MGR-R12CRT

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

Motive Gear Differential Shims GM10MCSK

MASTER SHIM KIT GM 8.2 EARLY CAR

Part Number: MGR-GM10MCSK

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

Motive Gear Axle Retainer Plates 3833322

Axle Shaft Retainer

Part Number: MGR-3833322

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

Richmond Gear EXCel Ring and Pinion Gear Installation Kits XL-1040-1

Ring and Pinion Kit

Part Number: RMG-XL-1040-1

Not Yet Reviewed

Estimated Ship Date: Mar 17, 2026 if ordered today

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Estimated Ship Date: Mar 17, 2026 if ordered today

Yukon Gear & Axle Minimum Install Kits MK GM8.2BOP

Ring and Pinion Gear Installation Kit, Minimum Install, 27-spline, Standard Rotation, Rear, GM 8.2 in., BOP Axle, Kit

Part Number: YGA-12054

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Motive Gear Ring and Pinion Gear Installation Kits GM8.5PIK

Ring and Pinion Bearing Kit

Part Number: MGR-GM85PIK

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

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Estimated Ship Date: Mar 18, 2026 if ordered today

Richmond Gear Ring and Pinion Installation Half Kits 83-1088-C

Ring and Pinion Installation Kit, GM, 8.5 in. O, Kit

Part Number: RMG-83-1088-C

Not Yet Reviewed

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Motive Gear Differential Crush Sleeves 3115

CRUSH SLEEVE O AXLE

Part Number: MGR-3115

Not Yet Reviewed

Estimated Ship Date: Mar 17, 2026 if ordered today

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Estimated Ship Date: Mar 17, 2026 if ordered today

USA Standard Gear Master Overhaul Kits ZK GM8.5OLDS-28

Ring and Pinion Installation Kit, GM 8.5 in., Rear, Kit

Part Number: SPZ-37058

Not Yet Reviewed

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Currie 9 in. Crate Rear End Assemblies CR-GA137TWAB

Crate Axle, 64-66 GM A-Body Centurion 9-Inch, Black PC, 31-Spline, 3.70 Ratio, Currie Twin Track, Wilwood 11" Dynapro Black Calipers

Part Number: CUR-CR-GA137TWAB

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Currie 9 in. Crate Rear End Assemblies CR-GB337TEBB

Crate Axle, 65-70 GM B-Body Centurion 9-Inch, Black PC, 31-Spline, 3.70 Ratio, Helical Limited Slip, 11" Explorer Disc

Part Number: CUR-CR-GB337TEBB

Not Yet Reviewed

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Yukon Gear & Axle Ring and Pinion Gears YGK2353

Ring and Pinion Gears and Installation Kit, 8.5" OLDSMOBILE GM 3.42 REAR R&P GEAR/ INSTALL KIT PACKAGE with 28spl POSI

Part Number: YGA-12593

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Yukon Gear & Axle Ring and Pinion Gears YGK2351

Ring and Pinion Gears and Installation Kit, 8.5" OLDSMOBILE GM 3.42 REAR R&P GEAR/ INSTALL KIT PACKAGE

Part Number: YGA-12595

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Yukon Gear & Axle Ring and Pinion Gear Installation Kits PK GM8.5OLDS

RING AND PINION GEAR INSTALLATION KITS, Yukon Pinion installation kits

Part Number: YGA-13071

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Yukon Gear & Axle Ring and Pinion Gears YGK2354

Ring and Pinion Gears and Installation Kit, 8.5" OLDSMOBILE GM 3.90 REAR R&P GEAR/ INSTALL KIT PACKAGE with 28spl POSI

Part Number: YGA-12592

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Yukon Gear & Axle Differential Pinion Bearing Spacers and Sleeves YY GM8.2-SLEEVE

Sleeve for 8.2" Chevy Yoke into a Buick, Oldsmobile, Pontiac Differential.

Part Number: YGA-41091

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Yukon Gear & Axle Spider Gear Kits YPKGM8.2-BOP-P-28

Spider Gears, Side Gears, Cross Shaft Pin, Yukon Dura Grip Carrier Style, Rear, GM 8.2 in. BOP Axle, 28-spline

Part Number: YGA-16144

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Powertrax Grip LS Traction Systems GM 8.875 Inch (12-bolt) LS231230

Differential, Grip LS Traction System, 30-Spline, GM, 8.875 in., 3 Series Carrier, Each

Part Number: PWT-LS231230

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