24/7 Customer service
USD
Add your vehicle
Address
Login
Cart
Item
$0.00
Shopping for Buick
ADD VEHICLE DETAILS

Buick Differential Locker

22items
  • All filters
  • Sort By
  • Price
  • Placement on Vehicle
  • Brand
  • Color
  • Warranty
Rear Motive Gear Differential Mini Spool for 1976-1985 Buick ElectraRear Motive Gear Differential Mini Spool for 1976-1985 Buick Electra
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1976-1985 Buick Electra
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Electra: 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004T37U
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1991 Buick Roadmaster
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1991 Buick Roadmaster
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1991 Buick Roadmaster
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004SYVX
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1975-1980 Buick Skyhawk
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1975-1980 Buick Skyhawk
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Skyhawk: 1975 1976 1977 1978 1979 1980
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004T3N2
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1976-1979 Buick Skylark
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1976-1979 Buick Skylark
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Skylark: 1976 1977 1978 1979
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004T3PK
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1978-1987 Buick Regal
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1978-1987 Buick Regal
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Regal: 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004T373
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1977-1978 Buick Riviera
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1977-1978 Buick Riviera
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Riviera: 1977 1978
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004T1YK
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1975-1985 Buick LeSabre
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1975-1985 Buick LeSabre
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LeSabre: 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004T0RU
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1991 Buick Commercial Chassis
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1991 Buick Commercial Chassis
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1991 Buick Commercial Chassis
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004SYL4
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1977-1983 Buick Estate Wagon
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1977-1983 Buick Estate Wagon
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Estate Wagon: 1977 1978 1979 1980 1981 1982 1983
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004T49K
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1978-1981 Buick Century
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1978-1981 Buick Century
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Century: 1978 1979 1980 1981
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004T132
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
Rear Motive Gear Differential Mini Spool for 1973-1975 Buick Apollo
A-Premium®Part # APDL003
Rear Motive Gear Differential Mini Spool for 1973-1975 Buick Apollo
51 Reviews
$86.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Apollo: 1973 1974 1975
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity1
Installation PositionRear
ColorBlack
Part interchange
MS7526, MS75-26
item #1004T0G8
Note
【Note-1】 This product is designed to be compatible with GM 7.5 inches (10 Bolt) models that have 26 splines and a mini spool.
【Note-2】 It can only be installed on vehicles with a stock open-style carrier.
Show less
2 Pcs Rear Motive Gear Differential Mini Spool for 1976-1985 Buick Electra
A-Premium®Part # APDL008
2 Pcs Rear Motive Gear Differential Mini Spool for 1976-1985 Buick Electra
51 Reviews
$167.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Electra: 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorBlack
Part interchange
MS7526, MS75-26
item #1013C0EA
Note
【Note-1】 Fit the models with GM 7.5" (10 Bolt), 26 Spline, Mini Spool, Not fit 30-Spline.
【Note-2】 This item is designed exclusively for use with stock open style carriers and will not fit other carrier types.
Show less
2 Pcs Rear Motive Gear Differential Mini Spool for 1975-1980 Buick Skyhawk
A-Premium®Part # APDL008
2 Pcs Rear Motive Gear Differential Mini Spool for 1975-1980 Buick Skyhawk
51 Reviews
$167.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Skyhawk: 1975 1976 1977 1978 1979 1980
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorBlack
Part interchange
MS7526, MS75-26
item #1013C213
Note
【Note-1】 Fit the models with GM 7.5" (10 Bolt), 26 Spline, Mini Spool, Not fit 30-Spline.
【Note-2】 This item is designed exclusively for use with stock open style carriers and will not fit other carrier types.
Show less
2 Pcs Rear Motive Gear Differential Mini Spool for 1977-1978 Buick Riviera
A-Premium®Part # APDL008
2 Pcs Rear Motive Gear Differential Mini Spool for 1977-1978 Buick Riviera
51 Reviews
$167.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Riviera: 1977 1978
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorBlack
Part interchange
MS7526, MS75-26
item #1013AYU9
Note
【Note-1】 Fit the models with GM 7.5" (10 Bolt), 26 Spline, Mini Spool, Not fit 30-Spline.
【Note-2】 This item is designed exclusively for use with stock open style carriers and will not fit other carrier types.
Show less
2 Pcs Rear Motive Gear Differential Mini Spool for 1976-1979 Buick Skylark
A-Premium®Part # APDL008
2 Pcs Rear Motive Gear Differential Mini Spool for 1976-1979 Buick Skylark
51 Reviews
$167.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Skylark: 1976 1977 1978 1979
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorBlack
Part interchange
MS7526, MS75-26
item #1013C1Q9
Note
【Note-1】 Fit the models with GM 7.5" (10 Bolt), 26 Spline, Mini Spool, Not fit 30-Spline.
【Note-2】 This item is designed exclusively for use with stock open style carriers and will not fit other carrier types.
Show less
2 Pcs Rear Motive Gear Differential Mini Spool for 1973-1975 Buick Apollo
A-Premium®Part # APDL008
2 Pcs Rear Motive Gear Differential Mini Spool for 1973-1975 Buick Apollo
51 Reviews
$167.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Apollo: 1973 1974 1975
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorBlack
Part interchange
MS7526, MS75-26
item #1013AXVV
Note
【Note-1】 Fit the models with GM 7.5" (10 Bolt), 26 Spline, Mini Spool, Not fit 30-Spline.
【Note-2】 This item is designed exclusively for use with stock open style carriers and will not fit other carrier types.
Show less
2 Pcs Rear Motive Gear Differential Mini Spool for 1975-1985 Buick LeSabre
A-Premium®Part # APDL008
2 Pcs Rear Motive Gear Differential Mini Spool for 1975-1985 Buick LeSabre
51 Reviews
$167.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick LeSabre: 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorBlack
Part interchange
MS7526, MS75-26
item #1013C205
Note
【Note-1】 Fit the models with GM 7.5" (10 Bolt), 26 Spline, Mini Spool, Not fit 30-Spline.
【Note-2】 This item is designed exclusively for use with stock open style carriers and will not fit other carrier types.
Show less
2 Pcs Rear Motive Gear Differential Mini Spool for 1977-1983 Buick Estate Wagon
A-Premium®Part # APDL008
2 Pcs Rear Motive Gear Differential Mini Spool for 1977-1983 Buick Estate Wagon
51 Reviews
$167.99
Edit ZIP code
3-year warranty
90 days free return
Fits Buick Estate Wagon: 1977 1978 1979 1980 1981 1982 1983
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorBlack
Part interchange
MS7526, MS75-26
item #1013AZE1
Note
【Note-1】 Fit the models with GM 7.5" (10 Bolt), 26 Spline, Mini Spool, Not fit 30-Spline.
【Note-2】 This item is designed exclusively for use with stock open style carriers and will not fit other carrier types.
Show less
2 Pcs Rear Motive Gear Differential Mini Spool for 1991 Buick Roadmaster
A-Premium®Part # APDL008
2 Pcs Rear Motive Gear Differential Mini Spool for 1991 Buick Roadmaster
51 Reviews
$167.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1991 Buick Roadmaster
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorBlack
Part interchange
MS7526, MS75-26
item #1016LU80
Note
【Note-1】 Fit the models with GM 7.5" (10 Bolt), 26 Spline, Mini Spool, Not fit 30-Spline.
【Note-2】 This item is designed exclusively for use with stock open style carriers and will not fit other carrier types.
Show less
2 Pcs Rear Motive Gear Differential Mini Spool for 1991 Buick Commercial Chassis
A-Premium®Part # APDL008
2 Pcs Rear Motive Gear Differential Mini Spool for 1991 Buick Commercial Chassis
51 Reviews
$167.99
Edit ZIP code
3-year warranty
90 days free return
Fits 1991 Buick Commercial Chassis
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Buick
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorBlack
Part interchange
MS7526, MS75-26
item #1016LXTP
Note
【Note-1】 Fit the models with GM 7.5" (10 Bolt), 26 Spline, Mini Spool, Not fit 30-Spline.
【Note-2】 This item is designed exclusively for use with stock open style carriers and will not fit other carrier types.
Show less
Page 1 of 2

What is a differential locker in a vehicle?

A differential locker, also known as a locking differential and a diff locker, is a specialized differential system used in the central, front, or rear differential of a four-wheel drive vehicle, particularly off-road and high-performance cars. It can temporarily "lock" the differential, forcing the two drive wheels to spin at the same speed, which provides enhanced traction and performance when one wheel is slipping. This enhances off-road capabilities, handling, and acceleration performance. Compared to a standard open differential, a differential locker uses a mechanical locking mechanism to improve the vehicle's driving capabilities on low-friction surfaces, such as mud, snow, and other challenging terrain. This is especially useful for four-wheel-drive vehicles, trucks, and high-performance sports cars that require excellent traction.

How to install a different locker?

When you need to replace the car diff locker, you can refer to the following steps:
1. Prepare the vehicle by jacking it up and securing it on jack stands, then drain the differential fluid.
2. Disassemble the differential and remove the differential cover, disconnect the differential from the driveshaft and axles, and disassemble the differential housing to access the internal components.
3. With the differential disassembled, it's time to install the differential locker mechanism by replacing the standard spider gears with the locker unit.
4. Carefully reassemble the differential housing, ensuring proper gear alignment, then reconnect the differential to the driveshaft and axles.
5. Refill the differential with the recommended fluid type and quantity.
6. Test the operation of the differential locker by engaging and disengaging the locking mechanism, ensuring smooth and proper function.
7. Lower the vehicle and test drive, checking for any issues or abnormal noises to complete the installation.

Conquer any terrain with the unstoppable power of the A-Premium diff locker

When the terrain gets tough, an A-Premium differential locker is your indomitable force. Equipped with exclusive technology, it reliably locks the left and right wheels together, ensuring one wheel's traction can overcome even the most challenging surfaces. The mechanism engages smoothly and silently, without compromising stability. Rigorous engineering guarantees long-term durability, even in rugged off-road conditions. Additionally, our products come with a 3-year warranty, 90-day free returns, and round-the-clock customer service to ensure your complete satisfaction. A-Premium differential locker - your trusty companion, no matter where the journey takes you.