Availability
1973 PONTIAC FIREBIRD Differential & Rear-End Components
Estimated Ship Date: Today
Cross Shaft Pin, Mini Spool, GM, 8.5 in., 28-Spline, Each
Part Number: RMG-CSPGM85
Estimated Ship Date: Today
Estimated Ship Date: Today
Spool, Full Size, Steel, 30-Spline, 10-Bolt, GM 8.5 in., Each
Part Number: RMG-81-1030-1
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Gears, 3.08:1 Ratio, 30-spline, Standard Rotation, GM 8.5/8.6 in., Set
Part Number: YGA-24492
Estimated Ship Date: Today
Estimated Ship Date: Today
Gear, Ring and Pinion, 3.08:1 Ratio, GM, 8.5/8.6 in., Set
Part Number: MGR-G885308
Estimated Ship Date: Apr 6, 2026 if ordered today
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
Estimated Ship Date: Today
Ring and Pinion Installation Kit, 30 Spline, GM 8.5 in., Kit
Part Number: YGA-13069
Not Yet Reviewed
Estimated Ship Date: Apr 20, 2026 if ordered today
Estimated Ship Date: Apr 20, 2026 if ordered today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Gear Installation Kit, Minimum Installation Kit, 30 Spline, GM 8.5 in., Kit
Part Number: YGA-12055
Estimated Ship Date: Apr 20, 2026 if ordered today
Estimated Ship Date: Apr 20, 2026 if ordered today
Crush Sleeve, Steel, 0.625 in. Tall, Each
Part Number: YGA-33110
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential Main Cap Studs, GM, Kit
Part Number: YGA-32271
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
RING GEAR BOLT EACH
Part Number: MGR-PB179-2-L
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Apr 6, 2026 if ordered today
Differential Ring And Pinion Set
Part Number: RNB-697-303
Not Yet Reviewed
Estimated Ship Date: Apr 7, 2026 if ordered today
Estimated Ship Date: Apr 7, 2026 if ordered today
Estimated Ship Date: Today
Ring & Pinion Gear Set GM 10 Bolt 8.5" / 3.42 Ratio
Part Number: SVL-2020642
Not Yet Reviewed
Estimated Ship Date: Apr 1, 2026 if ordered today
Estimated Ship Date: Apr 1, 2026 if ordered today
Differential Ring Gear Spacer, Ring Gear Spacer
Part Number: MGR-085050C
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Differential Carrier Bearing, Steel, Each
Part Number: NTL-LM501349
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion, Installation Kit, GM, 8.5 in., Kit
Part Number: SPZ-58011
Not Yet Reviewed
Estimated Ship Date: Apr 3, 2026 if ordered today
Estimated Ship Date: Apr 3, 2026 if ordered today
Thrust Washer, Open Differential, 0.795 in. Inside Diameter, GM 8.5 in./8.6 in., Each
Part Number: YGA-33385
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
MASTER SHIM KIT GM 8.2 EARLY CAR
Part Number: MGR-GM10MCSK
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Axle Shaft Retainer
Part Number: MGR-3833322
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
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
Estimated Ship Date: Apr 6, 2026 if ordered today
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
Estimated Ship Date: Apr 6, 2026 if ordered today
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster