1978 PONTIAC FIREBIRD Differential & Rear-End Components

Yukon positraction internals for 7.5" and 7.625" GM with 26 spline axles

Part Number: YGA-16116

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Estimated Ship Date: Nov 19, 2025 if ordered today

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Ring and Pinion Gears and Installation Kit, 8.5" GM 4.56 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12625

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Ring and Pinion Gears and Installation Kit, 8.5" GM 4.56 REAR R&P GEAR/ INSTALL KIT PACKAGE with 28spl POSI & AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12631

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Yukon Bearing install kit for '81 and older GM 7.5" differential

Part Number: YGA-11061

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High performance Yukon Ring & Pinion "thick" gear set for GM 7.5" in a 4.11 ratio

Part Number: YGA-24481

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Posi spring kit for GM 7.5", with preload plates

Part Number: YGA-33206

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Yukon steel spool for GM 8.5" & 8.6" with 30 spline axles

Part Number: YGA-32193

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Mini spool for GM 7.5" with 26 spline axles

Part Number: YGA-32228

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Gear, Ring and Pinion, 4.56:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-GM75-456

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Gear, Ring and Pinion, 3.42:1 Ratio, GM, 7.5 in./7.625 in., Set

Part Number: MGR-G875342X

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Estimated Ship Date: Nov 10, 2025 if ordered today

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WASHER, PINION THRUST

Part Number: MGR-559291

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Ring and Pinion Gears, Pro Series, 3.90:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-G975390

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Ring and Pinion

Part Number: RMG-GM75456TK

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Ring and Pinion Kit

Part Number: RMG-GM75323

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

Part Number: RMG-GM75342TK

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Mini Spool, MINI SPOOL GM 10 BOLT 8.5"

Part Number: RMG-XL-5140

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Estimated Ship Date: Nov 10, 2025 if ordered today

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SPACER

Part Number: PWT-1920604SAJ

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Estimated Ship Date: Nov 11, 2025 if ordered today

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INTERNAL DRIVE

Part Number: PWT-1930404DGX

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SLOTTED DRIVER

Part Number: PWT-424003DGE2

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Estimated Ship Date: Nov 11, 2025 if ordered today

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COUPLER

Part Number: PWT-5201004CJY

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Estimated Ship Date: Nov 11, 2025 if ordered today

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