PONTIAC GTO Differential & Rear-End Components

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

Part Number: SPZ-36218

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Ring and Pinion and Differential Combo, GM 8.5 in., 3.42:1 Ratio, 28-Spline, Buick, Chevy, Oldsmobile, Pontiac, Kit

Part Number: YGA-12627

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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 )

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USA Standard Master Overhaul kit for the GM 12P differential

Part Number: SPZ-37042

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Ring and Pinion-GM 8.5/8.625

Part Number: MGR-GM10-373A

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Estimated Ship Date: Nov 18, 2025 if ordered today

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Gear, Ring and Pinion, 3.90:1 Ratio, GM, 8.2 in., Set

Part Number: MGR-G882390

5.0 out of 5 stars ( 3 )

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

Part Number: YGA-14090

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Differential Internals, Yukon Dura Grip or Eaton Positraction Internals for 8.5" GM with 28 Spline Axles, Kit

Part Number: YGA-16052

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Pinion Nut Washer, Each

Part Number: YGA-33166

5.0 out of 5 stars ( 4 )

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Cross Pin, GM, 12-Bolt, 8.875 in., Each

Part Number: MGR-3931175

5.0 out of 5 stars ( 2 )

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Differential Carrier, Dura Grip Positraction, Clutch-type, 30-spline, Rear, GM 8.875 in. (12-bolt) Passenger Car, Each

Part Number: YGA-26013

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Differential, Grip Pro Traction System, 28-Spline, GM 8.5 in., Each

Part Number: PWT-GT201028

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Estimated Ship Date: Nov 18, 2025 if ordered today

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Differential Carrier Rebuild Kits and Spider Gears, GM 8.5 in., Side Gears, 28-spline, 10-bolt, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Kit

Part Number: SPZ-39026

5.0 out of 5 stars ( 1 )

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Crush Sleeve, Steel, 0.620 in. Tall, Each

Part Number: YGA-33097

1.0 out of 5 stars ( 1 )

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Differential Carrier Bearing, Races Included, Koyo Bearing, Steel, Set

Part Number: MGR-706016XR

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Gear, Ring and Pinion, 3.23:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.500 in. Ring Gear, GM 8.5/8.6 in., Set

Part Number: YGA-24493

3.67 out of 5 stars ( 3 )

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Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901691

4.6 out of 5 stars ( 5 )

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Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885488

5.0 out of 5 stars ( 1 )

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Ring and Pinion Gears and Installation Kit, 12P 8.875" GM 3.73 REAR R&P GEAR/ INSTALL KIT PACKAGE with 30spl POSI & AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12613

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Differential Carrier Cases, Extreme Heavy Duty, GM 8.5 in., 28/30 Spline, 2.73 and Up Ratio, Each

Part Number: YGA-20084

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Differential Pinion Bearing Kit, GM 8.875 in. Car, Timken Bearings, Chevy, GMC, Kit

Part Number: MGR-R12CRTPK

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Differential Carrier, Positraction, Nodular Iron, GM 8.75 in., 33 Spline, 3.08 to 3.90 Ratio, Each

Part Number: SUM-730948

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Ring and Pinion Gears and Installation Kit, 8.2" BOP 3.73 RATIO REAR R&P GEAR/ INSTALL KIT PACKAGE with 28spl POSI

Part Number: YGA-12581

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 1, 2025 if ordered today

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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 )

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Gear, Ring and Pinion, 3.36:1 Ratio, GM, 8.2 in., Set

Part Number: MGR-G882336

5.0 out of 5 stars ( 5 )

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