PONTIAC FIREBIRD Differential & Rear-End Components

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 )

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

Part Number: MGR-G885456

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

Part Number: MGR-G885430

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

Part Number: RMG-12BC373T

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Gear, Ring and Pinion, 2.73:1 Ratio, GM 8.5 in., Set

Part Number: RNB-697-812

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

Part Number: SVL-2023899

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Gear, Ring and Pinion, 3.08:1 Ratio, GM, 7.5 in./7.625 in., 2 Series, Set

Part Number: MGR-G875308

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Gear, Ring and Pinion, 5.13:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901711

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Ring and Pinion Gears, 3.90:1 Ratio, Standard Gear Rotation, GM 8.875 in. Passenger Car, Set

Part Number: YGA-24125

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Ring and Pinion Gears, 4.11:1 Ratio, Standard Rotation, 8.20 in. Diameter, GM, BOP, Set

Part Number: MGR-BP882411

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Gear, Ring and Pinion, EXCel, 4.10:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75410OE

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Gear, Ring and Pinion, 3.42:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900451

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Spider Gears, Side Gears, Cross Shaft Pin, Yukon Dura Grip Carrier Style, Rear, GM 8.875 in., 30 Spline, Kit

Part Number: YGA-16039

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Estimated Ship Date: Jan 23, 2026 if ordered today

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Gear, Ring and Pinion, 4.56:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-79-0072-1

4.5 out of 5 stars ( 4 )

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Axle Shafts, Direct Fit, Rear, 4140 Chromoly, Chevy, 28-Spline, 32.00 Length, Kit

Part Number: MGR-MG22104

4.25 out of 5 stars ( 4 )

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USA Standard Ring & Pinion gear set for GM 12 bolt car in a 3.90 ratio

Part Number: SPZ-36169

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Estimated Ship Date: Jan 9, 2026 if ordered today

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Axle Shaft, Rear, C-Clip, 1541H Alloy, 30 Spline, 30.125 in. Length, GM 8.875 in., Chevy, Each

Part Number: YGA-21285

4.0 out of 5 stars ( 2 )

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Axles, Direct Fit, C-Clip, Rear, 1541H Steel, 28-Spline, Chevy, Pontiac, 7.625 in., Pair

Part Number: MSR-A102806

4.43 out of 5 stars ( 7 )

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Differential Ring and Pinion; GM 12 Bolt 8.875 - Thin Gear - 3.73 Ratio

Part Number: SVL-2023890

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 8.2 in., Set

Part Number: MGR-G882373

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Ring and Pinion Gear Installation Kit, Bearing Overhaul, 30 Spline, Large Journal, GM 8.5 in., Kit

Part Number: YGA-11069

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Estimated Ship Date: Jan 23, 2026 if ordered today

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Gear, Ring and Pinion, 4.10:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 2 Series, Set

Part Number: RMG-49-0009-1

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Differential Carrier, Spartan Locker, 30-spline, Steel, Rear, GM 8.875 in., Each

Part Number: SPZ-17032

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Ring and Pinion Kit

Part Number: RMG-GM75355

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Gear, Ring and Pinion, 4.56:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901671

2.67 out of 5 stars ( 3 )

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