Availability
Spool, Mini, Steel, 30-Spline, 12-Bolt, GM 8.875 in., Each
Part Number: RMG-78-1230-1
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Differential Side Bearing Spacer; Solid Differential Spacer; Fits GM 12 Bolt Car
Part Number: RMG-04-0012-1
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Spool, Mini, Steel, 28-Spline, 10-Bolt, GM 8.5 in., Each
Part Number: RMG-78-1028-1
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Installation Kit, Super Kit, GM, 7.5 in., Kit
Part Number: MGR-GM7-5IK
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Kit
Part Number: RMG-XL-1044-1
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Ring and Pinion Installation Kit, GM, 12-Bolt Passenger Car, 8.875 in. Open, Kit
Part Number: MGR-GM12IKC
Estimated Ship Date: Today
Estimated Ship Date: Today
Mini Spool, Steel, 28-Spline, GM, 8.2 in., 10-Bolt, Each
Part Number: MGR-MS10C-28
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Kit
Part Number: RMG-XL-1016-1
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Spacer, Replacement, Active Spacer, Each
Part Number: PWT-624004SDG2
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Ring and Pinion Installation Kit, GM, 12-Bolt, 8.875 in. Diameter Ring Gear, 30-Spline Pinion, Kit
Part Number: RMG-831019B
Estimated Ship Date: Today
Estimated Ship Date: Today
Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit
Part Number: MGR-R10RTPK
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Mini Spool, MINI SPOOL GM 10 BOLT 8.2"
Part Number: RMG-XL-5135
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Ring Gear Spacer, GM 7.5 in. Ring Gear, Hardware Included, Each
Part Number: MGR-075050
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Ring Gear Spacer, 0.200 in. Thick, 10-bolt, GM 8.5 in., Each
Part Number: MGR-085050
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
SOLID SPACER & SHIM KIT GM12 BOLT CAR
Part Number: MGR-4101
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Cross Shaft, Differential, Steel, GM 12 Bolt, with Mini-Spool, Each
Part Number: YGA-32236
Estimated Ship Date: Dec 5, 2025 if ordered today
Estimated Ship Date: Dec 5, 2025 if ordered today
Pinion Bearing Kit, PBK GM 8.2" CAR '64-'72
Part Number: MGR-R10CRPK
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Axle Shaft, OEM Replacement, C-clip, 1541H Alloy Steel, 30-spline Inner, 30.063 in. Length, Each
Part Number: MGR-MG1000
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Pinion Bearing Kit, PBK GM 8.2" CAR '64-'72
Part Number: MGR-R10CRTPK
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Ring and Pinion Kit
Part Number: RMG-XL-1019-1
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Differential Cross Shaft, Steel, Rear, GM 8.2 in., GM 55P (8.2 in. Drop Out), Each
Part Number: YGA-33407
Not Yet Reviewed
Estimated Ship Date: Dec 5, 2025 if ordered today
Estimated Ship Date: Dec 5, 2025 if ordered today
Cross Pin Shaft, Notched, Steel, Rear, GM 7.5 in., GM 7.6 in., Each
Part Number: YGA-33435
Not Yet Reviewed
Estimated Ship Date: Dec 5, 2025 if ordered today
Estimated Ship Date: Dec 5, 2025 if ordered today
Pinion Bearing Kit, PBK GM 8.875" CAR
Part Number: MGR-R12CRPK
Not Yet Reviewed
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
Ring and Pinion Gear Installation Kit, Minimum Install, 17-spline, Standard Rotation, Rear, GM 55P (8.2 in. Drop Out), GM 55T (9.375 in. Drop Out),Kit
Part Number: YGA-12047
Estimated Ship Date: Dec 5, 2025 if ordered today
Estimated Ship Date: Dec 5, 2025 if ordered today
Differential Spool Bearing Kit; Fits GM 8.5 in. 10 Bolt; Incl. Bearings/Bearing Races
Part Number: RMG-29-0013-1
Estimated Ship Date: Nov 24, 2025 if ordered today
Estimated Ship Date: Nov 24, 2025 if ordered today
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