Availability
BUICK ROADMASTER Differential & Rear-End Components
Cross Shaft, Differential, Steel, GM, 10-Bolt, 7.5 in., with Mini Spool, Each
Part Number: RMG-CSPGM75
Estimated Ship Date: Today
Estimated Ship Date: Today
Axle Shaft, 30-Spline, 30.375 in. Length, Rear, GM, Each
Part Number: YGA-21278
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential Crush Sleeve; Fits GM 8.5 in.
Part Number: RMG-19-0004-1
Estimated Ship Date: Today
Estimated Ship Date: Today
Estimated Ship Date: Today
Carrier Shims, Ford 8.8 in., GM 12-Bolt Truck, GM 9.3 in. C-Axle, Kit
Part Number: RMG-3800071
Estimated Ship Date: Today
Estimated Ship Date: Today
Bearing, Pinion, 1.312 in. Inside Diameter, Each
Part Number: NTL-M88048
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Gear, Ring and Pinion, 5.13:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set
Part Number: RMG-6901711
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential Cross Shaft Bolt, Hex Head, GM 7.5, GM 7.625, 10-Bolt, Each
Part Number: MGR-14056196
Estimated Ship Date: Today
Estimated Ship Date: Today
Replcement Springs, Powertrax No-Slip, Kit
Part Number: PWT-8001001KAV
Estimated Ship Date: Today
Estimated Ship Date: Today
Gear, Ring and Pinion, 3.42:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 2 Series, Set
Part Number: RMG-4900051
Estimated Ship Date: Today
Estimated Ship Date: Today
Axle Shaft, 30-spline, 30.375 in. Length, Rear, GM 8.5 in., GM 8.6 in., Chevy, Each
Part Number: SPZ-35107
Estimated Ship Date: May 4, 2026 if ordered today
Estimated Ship Date: May 4, 2026 if ordered today
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
Not Yet Reviewed
Estimated Ship Date: May 6, 2026 if ordered today
Estimated Ship Date: May 6, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Allstar Performance Ring and Pinion Gear Sets ALL70117 GM 7.5 in. 4.10 Gears
Estimated Ship Date: Today
Gear, Ring and Pinion, 3.23:1 Ratio, GM, 7.5 in./7.625 in., 3 Series, Set
Part Number: MGR-G875323
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Grip Pro Traction System, 28-Spline, GM 7.5 in., 7.625 in., Each
Part Number: PWT-GT247528
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Gear, Ring and Pinion, 2.73:1 Ratio, GM, 8.5/8.6 in., Set
Part Number: MGR-G885273
Estimated Ship Date: May 6, 2026 if ordered today
Estimated Ship Date: May 6, 2026 if ordered today
Gear, Ring and Pinion, 4.56:1 Ratio, GM, 7.5 in., Set
Part Number: MGR-GM75-456
Not Yet Reviewed
Estimated Ship Date: May 6, 2026 if ordered today
Estimated Ship Date: May 6, 2026 if ordered today
Mini Spool; Differential Pinion Shim; Fits Ford 7.5 in./Ford 8.8 in./GM 8.5 in.
Part Number: RMG-16-0090-1
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential Bearing, Tapered Roller, Steel, Stock Replacement, GM, Each
Part Number: ADO-S1420
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Posi Performance, Electric Locker, 30-Spline, GM, 8.5 in., Each
Part Number: ETN-19659-010
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Installation Kit, GM, 7.50 in. Diameter Ring Gear, 27-Spline Pinion, Kit
Part Number: RMG-831044B
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring Gear Spacer, GM 7.5 in. Ring Gear, Hardware Included, Each
Part Number: MGR-075050
Estimated Ship Date: May 7, 2026 if ordered today
Estimated Ship Date: May 7, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Gear, Ring and Pinion, EXCel, 3.42:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set
Part Number: RMG-GM75342TK
Not Yet Reviewed
Estimated Ship Date: May 6, 2026 if ordered today
Estimated Ship Date: May 6, 2026 if ordered today
Ring and Pinion Kit
Part Number: RMG-GM75355TK
Not Yet Reviewed
Estimated Ship Date: May 6, 2026 if ordered today
Estimated Ship Date: May 6, 2026 if ordered today
Gear, Ring and Pinion, EXCel, 4.10:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set
Part Number: RMG-GM75410TK
Not Yet Reviewed
Estimated Ship Date: May 7, 2026 if ordered today
Estimated Ship Date: May 7, 2026 if ordered today
Differential Carrier Bearing, Steel, Each
Part Number: NTL-LM501349
Estimated Ship Date: Today
Estimated Ship Date: Today
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