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BUICK ROADMASTER Differential & Rear-End Components

Individual Parts
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Results 151 - 175 of 260

Richmond Gear Ring and Pinion Installation Half Kits 83-1044-B

Richmond Gear Ring and Pinion Installation Half Kits 83-1044-B

Richmond Gear Ring and Pinion Installation Half Kits 83-1044-B

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

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Estimated Ship Date: Today

Powertrax Replacement Active Spacers 624004SDG2

Powertrax Replacement Active Spacers 624004SDG2

Powertrax Replacement Active Spacers 624004SDG2

Spacer, Replacement, Active Spacer, Each

Part Number: PWT-624004SDG2

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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Estimated Ship Date: Feb 3, 2026 if ordered today

Powertrax No-Slip Traction Systems GM 7.5 Inch 9207752605

Powertrax No-Slip Traction Systems GM 7.5 Inch 9207752605

$40.00 Mail-In Rebate

Price after Manufacturer Rebate: $749.99

Rebate Expires: 12/31/2025

Get $40 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details.

Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only.

Powertrax No-Slip Traction Systems GM 7.5 Inch 9207752605

Differential, No-Slip Traction System, 26-Spline, GM, 7.5 in., Each

Part Number: PWT-92-0775-2605

3.5 out of 5 stars ( 4 )

Estimated Ship Date: Feb 5, 2026 if ordered today

    • $40.00 Mail-In Rebate

    Price after Manufacturer Rebate: $749.99

    Rebate Expires: 12/31/2025

    Get $40 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details.

    Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only.

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Estimated Ship Date: Feb 5, 2026 if ordered today

Richmond Gear Full Spools 81-1030-1

Richmond Gear Full Spools 81-1030-1

Richmond Gear Full Spools 81-1030-1

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: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Motive Gear Full Spools FS10-30

Motive Gear Full Spools FS10-30

Motive Gear Full Spools FS10-30

Spool, Full Size, Steel, 30-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: MGR-FS10-30

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Motive Gear Performance Ring and Pinion Sets G975390 GM 7.5/7.625 in. 3.90 Gears

Motive Gear Performance Ring and Pinion Sets G975390 GM 7.5/7.625 in. 3.90 Gears

Motive Gear Performance Ring and Pinion Sets G975390 GM 7.5/7.625 in. 3.90 Gears

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: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Motive Gear Ring Gear Bolts PB179-2-L

Motive Gear Ring Gear Bolts PB179-2-L

Motive Gear Ring Gear Bolts PB179-2-L

RING GEAR BOLT EACH

Part Number: MGR-PB179-2-L

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Richmond Gear EXCel OEM Replacement Axle Shafts 92-25100

Richmond Gear EXCel OEM Replacement Axle Shafts 92-25100

Richmond Gear EXCel OEM Replacement Axle Shafts 92-25100

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: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Richmond Gear Cross Pins and Shafts CSPGM85

Richmond Gear Cross Pins and Shafts CSPGM85

Richmond Gear Cross Pins and Shafts CSPGM85

Cross Shaft Pin, Mini Spool, GM, 8.5 in., 28-Spline, Each

Part Number: RMG-CSPGM85

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Richmond Gear Differential Carrier Rebuild Kits XL-4040

Richmond Gear Differential Carrier Rebuild Kits XL-4040

Richmond Gear Differential Carrier Rebuild Kits XL-4040

Differential Carrier Gear Kit

Part Number: RMG-XL-4040

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Richmond Gear EXCel Ring and Pinion Sets GM75342TK GM 7.5/7.625 in. 3.42 Gears

Richmond Gear EXCel Ring and Pinion Sets GM75342TK GM 7.5/7.625 in. 3.42 Gears

Richmond Gear EXCel Ring and Pinion Sets GM75342TK GM 7.5/7.625 in. 3.42 Gears

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: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Richmond Gear EXCel Ring and Pinion Gear Installation Kits XL-1044-1

Richmond Gear EXCel Ring and Pinion Gear Installation Kits XL-1044-1

Richmond Gear EXCel Ring and Pinion Gear Installation Kits XL-1044-1

Ring and Pinion Kit

Part Number: RMG-XL-1044-1

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Motive Gear Differential Carrier Replacement Parts 3984818

Motive Gear Differential Carrier Replacement Parts 3984818

Motive Gear Differential Carrier Replacement Parts 3984818

WASHER PIN 8.5 GM 10 BOLT

Part Number: MGR-3984818

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Motive Gear Ring Gear Spacers 075050

Motive Gear Ring Gear Spacers 075050

Motive Gear Ring Gear Spacers 075050

Ring Gear Spacer, GM 7.5 in. Ring Gear, Hardware Included, Each

Part Number: MGR-075050

4.06 out of 5 stars ( 17 )

Estimated Ship Date: Jan 7, 2026 if ordered today

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Estimated Ship Date: Jan 7, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Allstar Performance Ring Gear Spacers ALL70100

Allstar Performance Ring Gear Spacers ALL70100

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Motive Gear Performance Ring and Pinion Sets G875456 GM 7.5/7.625 in. 4.56 Gears

Motive Gear Performance Ring and Pinion Sets G875456 GM 7.5/7.625 in. 4.56 Gears

Motive Gear Performance Ring and Pinion Sets G875456 GM 7.5/7.625 in. 4.56 Gears

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: Jan 7, 2026 if ordered today

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Estimated Ship Date: Jan 7, 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

Allstar Performance Ring and Pinion Gear Sets ALL70118 GM 7.5/7.625 in. 4.56 Gears

3.25 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Motive Gear Basic Ring and Pinion Gear Installation Kits R10RTPK

Motive Gear Basic Ring and Pinion Gear Installation Kits R10RTPK

Motive Gear Basic Ring and Pinion Gear Installation Kits R10RTPK

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

Part Number: MGR-R10RTPK

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Dorman Ring and Pinion Sets 697-306 GM 7.5/7.625 in. 4.10 Gears

Dorman Ring and Pinion Sets 697-306 GM 7.5/7.625 in. 4.10 Gears

Dorman Ring and Pinion Sets 697-306 GM 7.5/7.625 in. 4.10 Gears

Gear, Ring and Pinion, 4.10:1 Ratio, GM 7.5/7.625 in., Set

Part Number: RNB-697-306

Not Yet Reviewed

Estimated Ship Date: Dec 31, 2025 if ordered today

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Estimated Ship Date: Dec 31, 2025 if ordered today

Motive Gear Ring and Pinion Sets GM7.5-456 GM 7.5/7.625 in. 4.56 Gears

Motive Gear Ring and Pinion Sets GM7.5-456 GM 7.5/7.625 in. 4.56 Gears

Motive Gear Ring and Pinion Sets GM7.5-456 GM 7.5/7.625 in. 4.56 Gears

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-GM75-456

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Precision Gear Ring and Pinion Sets GM10/308 GM 8.5/8.6 in. 3.08 Gears

Precision Gear Ring and Pinion Sets GM10/308 GM 8.5/8.6 in. 3.08 Gears

Precision Gear Ring and Pinion Sets GM10/308 GM 8.5/8.6 in. 3.08 Gears

Ring and Pinion Gears, 3.08:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: ALY-GM10308

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Motive Gear Ring Gear Spacers 085050C

Motive Gear Ring Gear Spacers 085050C

Motive Gear Ring Gear Spacers 085050C

Differential Ring Gear Spacer, Ring Gear Spacer

Part Number: MGR-085050C

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Motive Gear Ring and Pinion Sets GM7.5-456A GM 7.5 in. 4.56 Gears

Motive Gear Ring and Pinion Sets GM7.5-456A GM 7.5 in. 4.56 Gears

Motive Gear Ring and Pinion Sets GM7.5-456A GM 7.5 in. 4.56 Gears

RP GM 7.5in 7.625in 4.56 MOT

Part Number: MGR-GM7-5-456A

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Richmond Gear Cross Pins and Shafts 80-0270-1

Richmond Gear Cross Pins and Shafts 80-0270-1

Richmond Gear Cross Pins and Shafts 80-0270-1

Cross Shaft, Differential, Steel, GM, 10-Bolt, 7.5 in., 7.625 in., Each

Part Number: RMG-8002701

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Jan 2, 2026 if ordered today

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Estimated Ship Date: Jan 2, 2026 if ordered today

Dorman Ring and Pinion Installation Kits 697-102

Dorman Ring and Pinion Installation Kits 697-102

Dorman Ring and Pinion Installation Kits 697-102

Ring and Pinion Installation Kit, GM 7.5 in., Rear, Kit

Part Number: RNB-697-102

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

Richmond Gear EXCel Ring and Pinion Sets GM75410TK GM 7.5/7.625 in. 4.10 Gears

Richmond Gear EXCel Ring and Pinion Sets GM75410TK GM 7.5/7.625 in. 4.10 Gears

Richmond Gear EXCel Ring and Pinion Sets GM75410TK GM 7.5/7.625 in. 4.10 Gears

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: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Richmond Gear Full Spools 81-1028-1

Richmond Gear Full Spools 81-1028-1

Richmond Gear Full Spools 81-1028-1

Spool, Full Size, Steel, 28-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: RMG-81-1028-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

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