1978 PONTIAC FIREBIRD Differential & Rear-End Components

Ring and Pinion Gears and Installation Kit, 8.5" GM 3.90 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12623

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Yukon Dura Grip case, GM 8.5" & 8.6", 2.73 & up

Part Number: YGA-20107

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Estimated Ship Date: Dec 8, 2025 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: Dec 8, 2025 if ordered today

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Yukon 1541H alloy rear axle for 8.2" and 8.5" GM passenger

Part Number: YGA-21243

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Ring and Pinion Gears, 5.13:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5/8.6 in., Set

Part Number: YGA-24163

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Estimated Ship Date: Dec 8, 2025 if ordered today

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7.5 GM STD S/G T/W

Part Number: YGA-33389

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Yukon Ring & Pinion sets

Part Number: YGA-24671

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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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Ring and Pinion Gears and Installation Kit, 8.5" GM 3.90 REAR R&P GEAR/ INSTALL KIT PACKAGE with 28spl POSI & AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12629

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Estimated Ship Date: Dec 8, 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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Estimated Ship Date: Dec 8, 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 28spl POSI & AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12631

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Axle Assembly, Standard OE Width, Ford 9 in., Black, 1541H Steel, 31 Spline Axles, F-Body, Second Gen, for use with QA1 4-Link, Chevy, Pontiac, Kit

Part Number: QA1-R902S

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Performance Mini Spool (GM 7.5 - 26 Spine)

Part Number: SDH-10015364

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Estimated Ship Date: Dec 9, 2025 if ordered today

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Axle Assemblies, Ford 9 in., Natural, 56 in. Flange to Flange, 31-Spline Axles, 1541H Alloy, Chevy, Pontiac, Kit

Part Number: ART-11179681

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Axle Assemblies, Ford 9 in., Satin Black, 56 in. Flange to Flange, 31-Spline Axles, 1541H Alloy, Chevy, Pontiac, Kit

Part Number: ART-11179683

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Estimated Ship Date: Nov 24, 2025 if ordered today

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WASHER, PINION THRUST

Part Number: MGR-559291

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Estimated Ship Date: Nov 26, 2025 if ordered today

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Ring and Pinion-GM 8.5/8.625

Part Number: MGR-GM10-308A

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit

Part Number: MGR-R10RET

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Estimated Ship Date: Nov 26, 2025 if ordered today

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Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit

Part Number: MGR-R10RT

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 26, 2025 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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Estimated Ship Date: Nov 26, 2025 if ordered today

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Pinion Shaft, SHAFT,GM 10-BOLT,7.5,RDF,NOSLP

Part Number: RMG-XL-5630

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Estimated Ship Date: Nov 26, 2025 if ordered today

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Axle 8.2" & 8.5" GM REAR, '68-'81 PASSSHAFT, 30-1/8", 2.780" SMALL HUB, 28spl, 1 SIDE

Part Number: SPZ-11951

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Ring and Pinion Kit

Part Number: RMG-GM75323

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Estimated Ship Date: Nov 26, 2025 if ordered today

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Ring and Pinion

Part Number: RMG-GM75456TK

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Estimated Ship Date: Nov 26, 2025 if ordered today

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