BUICK ROADMASTER Differential & Rear-End Components

Differential Carrier Gear Kit

Part Number: RMG-XL-4050

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Estimated Ship Date: Oct 3, 2025 if ordered today

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Ring and Pinion Kit

Part Number: RMG-GM75355TK

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Estimated Ship Date: Oct 6, 2025 if ordered today

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pinion spacer

Part Number: NAL-12479162

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Estimated Ship Date: Jan 9, 2026 if ordered today

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

Part Number: MGR-R10RE

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Pinion Shaft, SHAFT,GM 10-BOLT,7.5,RDF,NOSLP

Part Number: RMG-XL-5630

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Ring and Pinion-GM 8.5/8.625

Part Number: MGR-GM10-308A

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Differential Ring Gear Spacer, Ring Gear Spacer

Part Number: MGR-075050C

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Ring and Pinion Gear Installation Kit, Differential Bearings, GM 7.5/7.6 in., Kit

Part Number: NTN-NBRA320

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Estimated Ship Date: Sep 15, 2025 if ordered today

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BEARING AND SEAL KIT

Part Number: TMK-DRK321

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Gear, Ring and Pinion, 2.73:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 2 Series, Set

Part Number: RMG-4900481

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Sep 22, 2025 if ordered today

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SHIM KIT,DIFF BRG

Part Number: ADO-03995791

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Bearing Race, Steel, Each

Part Number: NTL-M802011

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Bearing, Pinion, 1.375 in. Inside Diameter, Each

Part Number: NTL-HM89446

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Estimated Ship Date: Sep 29, 2025 if ordered today

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GEAR KIT-DIFF RING & PINION

Part Number: ADO-23145790

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Estimated Ship Date: Oct 10, 2025 if ordered today

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SHIM KIT,DIFF DRV P/GR BRG

Part Number: ADO-26043991

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Estimated Ship Date: Oct 10, 2025 if ordered today

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SHIM KIT,DIFF BRG

Part Number: ADO-03995792

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Estimated Ship Date: Oct 10, 2025 if ordered today

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SPACER,DIFF DRV P/GR BRG

Part Number: ADO-12479162

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Estimated Ship Date: Oct 10, 2025 if ordered today

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Bearing Race, Steel, 3.000 in. Outside Diameter, Each

Part Number: NTL-HM89410

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Estimated Ship Date: Oct 2, 2025 if ordered today

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Differential Case

Part Number: MGR-GM10L-30

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Bearings

Part Number: ADO-09413427

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Estimated Ship Date: Oct 15, 2025 if ordered today

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Gear, Ring and Pinion, 4.30:1 Ratio, GM 8.5 in., Set

Part Number: ALY-GM10430

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Axle Shaft, Rear, Direct Replacement, GM 8.5/8.6 in., Buick, Chevy, Each

Part Number: RNB-630-117

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Sep 22, 2025 if ordered today

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Differential, Posi Performance, Electric Locker, 30-Spline, GM, 8.5 in., Each

Part Number: ETN-19659-010

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Gear, Ring and Pinion, 3.42:1 Ratio, GM 7.5/7.625 in., Set

Part Number: RNB-697-302

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Estimated Ship Date: Sep 22, 2025 if ordered today

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Repair Kit, differential

Part Number: LUK-GDK320

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Estimated Ship Date: Oct 13, 2025 if ordered today

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