BUICK Differential & Rear-End Components Transmission & Drivetrain - Free Shipping on Orders Over $109 at Summit Racing

Yukon Gear & Axle Ring and Pinion Sets YG GM12P-373 GM 8.875 in. (12-bolt) passenger car 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.875 in. Ring Gear, GM 8.875 in., Set

Part Number: YGA-24123

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Richmond Gear Mega Ring and Pinion Installation Kits 83-1021-M

Ring and Pinion Installation Kit, GM, 8.5 in., 10-Bolt, Kit

Part Number: RMG-831021M

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Moser Engineering Replacement C-Clip Axles A103003-1

Axle, Direct Fit, C-Clip, Rear, 1541H Steel, 30-Spline, GM F-Body, A-Body, 8.5 in., Each

Part Number: MSR-A103003-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Motive Gear Super Ring and Pinion Gear Installation Kits R12CRSK

Ring and Pinion Installation Kit, Super Kit, GM, 8.875 in., Kit

Part Number: MGR-R12CRSK

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Motive Gear Performance Ring and Pinion Sets G885373 GM 8.5/8.6 in. 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885373

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Motive Gear Ring and Pinion Sets GM10-456 GM 8.5/8.6 in. 4.56 Gears

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-456

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Yukon Gear & Axle 10 Bolt GM 8.2 Inch Differential Cover YP C3-GM8.2BOP

Differential Cover, Aluminum Girdle Cover, Natural, 10-bolt, GM 8.2 in., BOP Axle, Each

Part Number: YGA-32120

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Richmond Gear Ring and Pinion Sets 69-0159-1 GM 8.2 in. 4.11 Gears

Gear, Ring and Pinion, 4.11:1 Ratio, GM, 8.2 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901591

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Spicer Drivetrain Products Mini Spools 10015388

Performance Mini Spool (GM 8.5 - 30 Spline)

Part Number: SDH-10015388

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Richmond Gear Mini-Spools 78-7526-1

Spool, Mini, Steel, 26-Spline, 10-Bolt, GM 7.5 in., Each

Part Number: RMG-78-7526-1

4.4 out of 5 stars ( 10 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Motive Gear Mini Spools MS10-28

Mini Spool, Steel, 28-Spline, GM 8.5 in., Each

Part Number: MGR-MS10-28

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Motive Gear Differential Carrier Shim Kits SS10

Differential Shims, Carrier, Steel, Kit

Part Number: MGR-SS10

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Richmond Gear Complete Ring and Pinion Installation Kits 83-1040-1

Ring and Pinion Installation Kit, GM, 8.2 in., Buick or Pontiac Axle, 10-Bolt, 27-Spline Pinion, Kit

Part Number: RMG-8310401

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Richmond Gear Ring and Pinion Sets 49-0046-1 GM 7.5/7.625 in. 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900461

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Motive Gear Performance Ring and Pinion Sets G885430 GM 8.5/8.6 in. 4.30 Gears

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

Part Number: MGR-G885430

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Motive Gear Performance Ring and Pinion Sets G885456 GM 8.5/8.6 in. 4.56 Gears

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885456

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Richmond Gear EXCel Ring and Pinion Sets GM85308 GM 8.5/8.6 in. 3.08 Gears

Gear, Ring and Pinion, EXCel, 3.08:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: RMG-GM85308

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Yukon Gear & Axle Ring and Pinion Sets YG GM12P-342 GM 8.875 in. (12-bolt) passenger car 3.42 Gears

Gear, Ring and Pinion, 3.42:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.875 in. Ring Gear, GM 8.875 in., Set

Part Number: YGA-24121

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

USA Standard Gear Spider Gear Sets ZIKGM12-S-30

Differential Carrier Rebuild Kits and Spider Gears, Spider Gear Sets, GM 8.875 in. (12-bolt), Car/Truck, 30-spline, Buick, Chevy, GMC, Pontiac, Kit

Part Number: SPZ-39021

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Richmond Gear EXCel OEM Replacement Axle Shafts 92-25157

Axle Shaft, 28-Spline, 30.438 in. Length, Buick, Chevy, GMC, Oldsmobile, Pontiac, 8.5 in., Rear, Each

Part Number: RMG-92-25157

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Richmond Gear EXCel Ring and Pinion Sets 12BC373T GM 8.875 in. (12-bolt) passenger car 3.73 Gears

Gear, Ring and Pinion, EXCel, 3.73:1 Ratio, GM, 8.875 in., 12-Bolt Car, Set

Part Number: RMG-12BC373T

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

USA Standard Gear Master Overhaul Kits ZK GM8.5-HD

USA Standard Master Overhaul kit GM 8.5 in., Rear, Kit

Part Number: SPZ-37057

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

SVL Drivetrain Ring and Pinion Gear Sets 2023899 GM 8.875 in. (12-bolt) passenger car 4.11 Gears

Ring and Pinion Gears, 4.11:1 Ratio, 30-spline, Standard Rotation, GM 8.875 in. Passenger Car, Set

Part Number: SVL-2023899

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Motive Gear Master Ring and Pinion Installation Kits R10RMKT

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

Part Number: MGR-R10RMKT

4.5 out of 5 stars ( 16 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Yukon Gear & Axle Master Overhaul Kits YK GM7.5-B

Ring and Pinion Gear Installation Kit, Master Overhaul, 27 Spline, GM 7.5/7.6 in., Kit

Part Number: YGA-14077

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025