1973 PONTIAC FIREBIRD Differential & Rear-End Components Transmission & Drivetrain - In Stock Filter Options - Vendor In Stock Filter Options

Richmond Gear Cross Pins and Shafts CSPGM85

Cross Shaft Pin, Mini Spool, GM, 8.5 in., 28-Spline, Each

Part Number: RMG-CSPGM85

4.5 out of 5 stars ( 4 )

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Richmond Gear Full Spools 81-1030-1

Spool, Full Size, Steel, 30-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: RMG-81-1030-1

Not Yet Reviewed

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Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-308 GM 8.5/8.6 in. 3.08 Gears

Ring and Pinion Gears, 3.08:1 Ratio, 30-spline, Standard Rotation, GM 8.5/8.6 in., Set

Part Number: YGA-24492

5.0 out of 5 stars ( 1 )

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Motive Gear Performance Ring and Pinion Sets G885308 GM 8.5/8.6 in. 3.08 Gears

Gear, Ring and Pinion, 3.08:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885308

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Allstar Performance Ring and Pinion Gear Sets ALL70120 GM 8.5/8.6 in. 3.08 Gears

5 out of 5 stars ( 2 )

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Yukon Gear & Axle Differential Cover Bolts YSPBLT-075

Differential Cover Bolt, Steel, Black, Hex Head, 0.500 in. Wrench Size, Dana 25, 27, 30, 44, Model 35, GM 7.5 in., GM 8.2 in., Each

Part Number: YGA-33286

Not Yet Reviewed

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Yukon Gear & Axle Minimum Install Kits MK GM8.5

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: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Yukon Gear & Axle Differential Crush Sleeves YSPCS-027

Crush Sleeve, Steel, 0.625 in. Tall, Each

Part Number: YGA-33110

Not Yet Reviewed

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Yukon Gear & Axle Differential Bearing Cap Stud Kits YP TA-1815

Differential Main Cap Studs, GM, Kit

Part Number: YGA-32271

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

SVL Drivetrain Differential Carrier Rebuild Kits 10028814

Differential Carrier Rebuild Kit, GM 8.5, 28 Spline, Rear, Open Carrier, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Kit

Part Number: SVL-10028814

Not Yet Reviewed

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Motive Gear Ring Gear Bolts PB179-2-L

RING GEAR BOLT EACH

Part Number: MGR-PB179-2-L

Not Yet Reviewed

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Yukon Gear & Axle Differential Carrier Replacement Parts YSPCG-003

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

Part Number: YGA-33352

Not Yet Reviewed

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Richmond Gear Spools and Mini Spools 81-1033-1

Full Size Spool, GM 8.5 in. 10 Bolt, 33 Spline, C-Clip Elim.Req'd., Steel

Part Number: RMG-81-1033-1

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Dorman Ring and Pinion Sets 697-303 GM 8.5/8.625 in. 4.10 Gears

Differential Ring And Pinion Set

Part Number: RNB-697-303

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Motive Gear Differential Pinion Gear Thrust Washers 3984818

WASHER PIN 8.5 GM 10 BOLT

Part Number: MGR-3984818

5.0 out of 5 stars ( 1 )

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SVL Drivetrain Ring and Pinion Gear Sets 2020642 GM 8.5/8.6 in. 3.42 Gears

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

Part Number: SVL-2020642

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Motive Gear Ring Gear Spacers 085050C

Differential Ring Gear Spacer, Ring Gear Spacer

Part Number: MGR-085050C

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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National Bearing Differential Bearings LM501349

Differential Carrier Bearing, Steel, Each

Part Number: NTL-LM501349

1.0 out of 5 stars ( 2 )

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Yukon Gear & Axle Pinion Kits PK GM8.5

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

Part Number: YGA-13069

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

USA Standard Gear Bearing Kits ZBKGM8.5

Ring and Pinion, Installation Kit, GM, 8.5 in., Kit

Part Number: SPZ-58011

Not Yet Reviewed

Estimated Ship Date: Apr 2, 2026 if ordered today

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Estimated Ship Date: Apr 2, 2026 if ordered today

Yukon Gear & Axle Differential Carrier Replacement Parts YSPTW-047

Thrust Washer, Open Differential, 0.795 in. Inside Diameter, GM 8.5 in./8.6 in., Each

Part Number: YGA-33385

Not Yet Reviewed

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Motive Gear Differential Shims GM10MCSK

MASTER SHIM KIT GM 8.2 EARLY CAR

Part Number: MGR-GM10MCSK

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Motive Gear Axle Retainer Plates 3833322

Axle Shaft Retainer

Part Number: MGR-3833322

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Excel Ring Pinion and Axle Differential Cross Shafts XL-5640

Pinion Shaft, CROSS PIN-GM 10 BOLT 8.5" - 93

Part Number: RMG-XL-5640

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Motive Gear Basic Ring and Pinion Gear Installation Kits R10RE

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

Part Number: MGR-R10RE

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Yukon Gear & Axle Crosspins and Shafts YP MINSXGM8.5

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

Part Number: YGA-32238

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today