1970 PONTIAC FIREBIRD Differential & Rear-End Components

Ring and Pinion Installation Kit, GM, 12-Bolt, 8.875 in. Diameter Ring Gear, 30-Spline Pinion, Kit

Part Number: RMG-831019B

1.5 out of 5 stars ( 2 )

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WASHER PIN GR 12BLT 8 7/8

Part Number: MGR-3880141

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Differential Ring and Pinion, USA Standard Ring & Pinion set for 8.2" Buick, Olds & Pontiac, 3.55

Part Number: SPZ-36368

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Cross Shaft Pin, Mini Spool, GM, 8.2 in., Rear-End, Each

Part Number: RMG-CSPGM82

5.0 out of 5 stars ( 2 )

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8.5" GM PINION KIT, KOYO BRGS

Part Number: SPZ-60012

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Differential Main Cap Studs, GM, Kit

Part Number: YGA-32271

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Estimated Ship Date: Jan 8, 2026 if ordered today

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Cross Shaft, Differential, Steel, GM 8.5 in., with Mini-Spool, Each

Part Number: YGA-32238

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Estimated Ship Date: Jan 8, 2026 if ordered today

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GM 12P DURA GRIP case, bare, 4.10 & up, 30spline & 33spline

Part Number: YGA-20105

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Estimated Ship Date: Jan 8, 2026 if ordered today

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Gear, Ring and Pinion, 4.11:1 Ratio, GM, 8.2 in., Set

Part Number: MGR-G882411

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Ring and Pinion Gear Installation Kit, Minimum Installation Kit, 30 Spline, GM 8.5 in., Kit

Part Number: YGA-12055

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Jan 8, 2026 if ordered today

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Pinion Bearing Kit, PBK GM 8.2" CAR '64-'72

Part Number: MGR-R10CRPK

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Ring and Pinion Gears, 3.73:1 Ratio, 30-spline, Standard Rotation, GM 8.875 in., Buick, Chevy, Pontiac, Rear, Set

Part Number: SPZ-36168

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Ring and Pinion Gear, 3.90:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36215

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Carrier Bearings, GM 12 Bolt

Part Number: RMG-29-0005-1

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

Part Number: SPZ-36219

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Ring and Pinion Gear, 5.13:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36220

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Differential Ring and Pinion; GM 12 Bolt 8.875 - 5.13 Ratio

Part Number: SVL-2023908

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Differential Ring and Pinion; GM 12 Bolt 8.875 - 3.90 Ratio

Part Number: SVL-2023893

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Differential Ring and Pinion; GM 12 Bolt 8.875 - 4.56 Ratio

Part Number: SVL-2023902

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Ring & Pinion Gear Set GM 10 Bolt 8.5" / 3.42 Ratio

Part Number: SVL-2020642

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Estimated Ship Date: Dec 22, 2025 if ordered today

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SOLID SPACER & SHIM KIT GM12 BOLT CAR

Part Number: MGR-4101

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Bolt, Ring Gear, 3/8-24, Right Hand Thread, Black Oxide, Each

Part Number: MGR-RGBT-003

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Clutch Guide, Dura Grip, Chrysler 9.25 in., GM 8.5 in., 8.6 in., 8.875 in., Each

Part Number: YGA-33352

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Cross Shaft, Differential, Steel, GM 12 Bolt, with Mini-Spool, Each

Part Number: YGA-32236

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 8, 2026 if ordered today

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

Part Number: YGA-13068

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