Availability
BUICK ROADMASTER Differential & Rear-End Components
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
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: Today
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Installation Kit, Basic, GM 7.5 in., Rear, Kit
Part Number: MGR-R7-5GR
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
Gear, Ring and Pinion, 3.90:1 Ratio, GM 7.5 in., GM 7.625 in., 10-bolt, Set
Part Number: RMG-49-0284-1
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: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
Carrier Bearing, Stamped Steel, 2.680 in. Diameter, Front, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Each
Part Number: ADO-S1413
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit
Part Number: MGR-R10RE
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
Spacer, Replacement, Active Spacer, Each
Part Number: PWT-624004SDG2
Not Yet Reviewed
Estimated Ship Date: Mar 11, 2026 if ordered today
Estimated Ship Date: Mar 11, 2026 if ordered 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: MGR-FS10-30
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Gears, Pro Series, 3.90:1 Ratio, GM, 7.5 in., Set
Part Number: MGR-G975390
Not Yet Reviewed
Estimated Ship Date: Feb 11, 2026 if ordered today
Estimated Ship Date: Feb 11, 2026 if ordered today
Differential, Lock-Right, Locker, 26-Spline, GM, 7.625 in., Each
Part Number: PWT-1932-LR
Estimated Ship Date: Mar 11, 2026 if ordered today
Estimated Ship Date: Mar 11, 2026 if ordered today
Ring and Pinion Kit
Part Number: RMG-GM75355TK
Not Yet Reviewed
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
Axle Shaft, OEM Replacement, 30-Spline, 30.375 in. Length, GM, 8.5 in., Rear, Each
Part Number: RMG-92-25100
Not Yet Reviewed
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
Gear, Ring and Pinion, 4.10:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set
Part Number: RMG-6903221
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential Carrier Gear Kit
Part Number: RMG-XL-4040
Not Yet Reviewed
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
Differential Ring Gear Spacer, Ring Gear Spacer
Part Number: MGR-085050C
Not Yet Reviewed
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
Ring Gear Spacer, 0.200 in. Thick, 10-bolt, GM 8.5 in., Each
Part Number: MGR-085050
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
Gear, Ring and Pinion, 5.13:1 Ratio, GM, 8.5/8.6 in., Set
Part Number: MGR-G885513
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Kit
Part Number: RMG-XL-1044-1
Not Yet Reviewed
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
Gear, Ring and Pinion, 4.56:1 Ratio, GM, 7.5 in./7.625 in., 3 Series, Set
Part Number: MGR-G875456
Not Yet Reviewed
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Allstar Performance Ring and Pinion Gear Sets ALL70118 GM 7.5/7.625 in. 4.56 Gears
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
Gear, Ring and Pinion, 4.56:1 Ratio, GM, 7.5 in., Set
Part Number: MGR-GM75-456
Not Yet Reviewed
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
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