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Buick Roadmaster Differential Parts

This page brings together differential parts for the Buick Roadmaster spanning model years 1955–1996, including ring and pinion sets, differential assemblies, covers, and carriers. Select your year above and we'll show only the differential parts that fit your Buick Roadmaster. Fitment is checked against our vehicle data for every part listed.

1 - 30 of 35 results

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Picture of Eaton Torque Control Products Detroit Truetrac Helical Gear Limited Slip Differential Representative Photo, actual item may vary

Eaton Torque Control Products Detroit Truetrac Helical Gear Limited Slip Differential

18 reviews
Vehicle Specific
from $575
In Stock (10+)
Picture for manufacturer Eaton Torque Control Products
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Picture of Eaton ELocker Electronic Locking Differential Representative Photo, actual item may vary

Eaton ELocker Electronic Locking Differential

30 reviews
Vehicle Specific
from $1,298
In Stock (10+)
Picture for manufacturer Eaton Torque Control Products
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Picture of Eaton Torque Control Products Posi Limited-Slip Differential Representative Photo, actual item may vary

Eaton Torque Control Products Posi Limited-Slip Differential

78 reviews
Vehicle Specific
from $559
In Stock (10+)
Picture for manufacturer Eaton Torque Control Products
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Picture of Powertrax Lock-Right Automatic Locking Differential

Powertrax Lock-Right Automatic Locking Differential

33 reviews
Vehicle Specific
from $290
In Stock (10+)
Picture for manufacturer Powertrax
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Picture of Eaton Detroit Locker Automatic Locking Differential Representative Photo, actual item may vary

Eaton Detroit Locker Automatic Locking Differential

36 reviews
Vehicle Specific
from $640
In Stock (10+)
Picture for manufacturer Eaton Torque Control Products
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Picture of Motive Gear Performance Differential Ring and Pinion Sets

Motive Gear Performance Differential Ring and Pinion Sets

75 reviews
Vehicle Specific
from $296
In Stock (10+)
Picture for manufacturer Motive Gear
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Picture of Crown Automotive Jeep Replacement Differential Case Assemblies

Crown Automotive Jeep Replacement Differential Case Assemblies

43 reviews
Vehicle Specific
from $3
In Stock (10+)
Picture for manufacturer Crown Automotive
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Picture of Powertrax No-Slip Traction System - Automatic Locking Differential

Powertrax No-Slip Traction System - Automatic Locking Differential

18 reviews
Vehicle Specific
from $501
3 left at this price
Picture for manufacturer Powertrax
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Picture of Yukon Gear & Axle YG Ring Pinion Set Ratio GM

Yukon Gear & Axle YG Ring Pinion Set Ratio GM

13 reviews
Vehicle Specific
from $203
In Stock (10+)
Picture for manufacturer Yukon Gear & Axle
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Picture of Richmond Gear Excel Differential Ring and Pinion Set

Richmond Gear Excel Differential Ring and Pinion Set

66 reviews
Vehicle Specific
from $186
In Stock (10+)
Picture for manufacturer Richmond Gear
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Picture of Dorman 697-500 Differential Yoke with Seal and Pinion Nut, Cast Iron

Dorman 697-500 Differential Yoke with Seal and Pinion Nut, Cast Iron

77 reviews
Part: 697-500
Vehicle Specific
$96.29
4 left at this price
Picture for manufacturer Dorman
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Picture of Motive Gear Differential Ring and Pinion Gear Sets

Motive Gear Differential Ring and Pinion Gear Sets

37 reviews
Vehicle Specific
from $232
In Stock (10+)
Picture for manufacturer Motive Gear
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Picture of Powertrax Grip PRO Gear-Driven Limited-Slip Differential Traction System

Powertrax Grip PRO Gear-Driven Limited-Slip Differential Traction System

10 reviews
Vehicle Specific
from $612
In Stock (9)
Picture for manufacturer Powertrax
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Picture of Powertrax Grip LS Clutch-Style Limited-Slip Differential

Powertrax Grip LS Clutch-Style Limited-Slip Differential

42 reviews
Vehicle Specific
from $537
In Stock (5)
Picture for manufacturer Powertrax
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Picture of B&M Hi-Tek Aluminum Differential Cover

B&M Hi-Tek Aluminum Differential Cover

8 reviews
Vehicle Specific
from $155
In Stock (10+)
Picture for manufacturer B&M
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Picture of Moser Engineering 7107 Aluminum Differential Cover GM 8.2/8.5/8.6 10-Bolt

Moser Engineering 7107 Aluminum Differential Cover GM 8.2/8.5/8.6 10-Bolt

53 reviews
Part: 7107
Vehicle Specific
$256.44
1 left at this price
Picture for manufacturer Moser Engineering
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Picture of Richmond Gear Excel Series Differential Carrier

Richmond Gear Excel Series Differential Carrier

11 reviews
Vehicle Specific
from $191
2 left at this price
Picture for manufacturer Richmond Gear
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Picture of Dorman Differential Ring and Pinion Gear Set Ratio

Dorman Differential Ring and Pinion Gear Set Ratio

24 reviews
Vehicle Specific
from $155
In Stock (10+)
Picture for manufacturer Dorman
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Picture of Richmond Gear Differential Mini Spool

Richmond Gear Differential Mini Spool

27 reviews
Vehicle Specific
from $108
In Stock (8)
Picture for manufacturer Richmond Gear
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Picture of Richmond Gear Differential Spools - Race-Proven Traction

Richmond Gear Differential Spools - Race-Proven Traction

63 reviews
Vehicle Specific
from $249
2 left at this price
Picture for manufacturer Richmond Gear
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Picture of Dorman Differential Ring and Pinion Gear Set

Dorman Differential Ring and Pinion Gear Set

74 reviews
Vehicle Specific
from $106
In Stock (10+)
Picture for manufacturer Dorman
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Picture of Richmond Gear Differential Pinion Shaft

Richmond Gear Differential Pinion Shaft

12 reviews
Vehicle Specific
from $45
In Stock (10+)
Picture for manufacturer Richmond Gear
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Picture of Dorman 697-700 Differential Cover with Gasket

Dorman 697-700 Differential Cover with Gasket

79 reviews
Part: 697-700
Vehicle Specific
$27.11
In Stock (10+)
Picture for manufacturer Dorman
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Picture of Motive Gear Differential Pinion Shaft

Motive Gear Differential Pinion Shaft

71 reviews
Vehicle Specific
from $16
In Stock (9)
Picture for manufacturer Motive Gear
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Picture of ATP Differential Cover Kit with Internal Magnet

ATP Differential Cover Kit with Internal Magnet

20 reviews
Vehicle Specific
from $25
In Stock (10+)
Picture for manufacturer ATP
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Picture of ACDelco Automatic Transmission Reaction Carrier Differential

ACDelco Automatic Transmission Reaction Carrier Differential

57 reviews
Vehicle Specific
from $207
In Stock (8)
Picture for manufacturer ACDelco
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Picture of National Oil Seal 2043 Differential Pinion Seal

National Oil Seal 2043 Differential Pinion Seal

22 reviews
Part: 2043
Vehicle Specific
$8.78
In Stock (5)
Picture for manufacturer National Oil Seal
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Picture of Auburn Gear 545004 ECTED Locker GM 8.5 8.6 10 Bolt 30 Spline

Auburn Gear 545004 ECTED Locker GM 8.5 8.6 10 Bolt 30 Spline

34 reviews
Part: 545004
Vehicle Specific
$1,301.18
1 left at this price
Picture for manufacturer Auburn Gear
Free Shipping
Picture of Strange Engineering D1522 Standard Series Steel Spool GM 8.5" 10-Bolt 28-Spline

Strange Engineering D1522 Standard Series Steel Spool GM 8.5" 10-Bolt 28-Spline

50 reviews
Part: D1522
Vehicle Specific
$210.69
1 left at this price
Picture for manufacturer Strange Engineering
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Picture of Motive Gear Differential Carrier

Motive Gear Differential Carrier

64 reviews
Vehicle Specific
from $126
1 left at this price
Picture for manufacturer Motive Gear
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What's here for your Buick Roadmaster

  • Differential Ring and Pinion sets, including performance and OE-replacement options
  • Differential assemblies, both remanufactured and new
  • Differential Covers for rear axle applications
  • Differential Carriers in kit form and as individual components

The widest selection of Buick Roadmaster differential parts here comes from Eaton Torque Control Products, Dorman, Richmond Gear, and Quality-Built. Other categories Buick Roadmaster owners shop for: Buick Roadmaster Springs and Suspension Parts, Buick Roadmaster Shocks and Struts and Buick Roadmaster Exhaust Hardware, or browse all Buick Roadmaster parts and accessories.