Locking Differential & Carriers

Locking differentials replace your differential carrier and are sometimes called lockers or lockable differentials. They lock the axles together, providing 100% of available...

Locking differentials replace your differential carrier and are sometimes called lockers or lockable differentials. They lock the axles together, providing 100% of available torque to both wheels, regardless of whether one is off the ground or on a low traction surface. When the vehicle turns, a locking differential functions like an open differential, allowing the wheels to rotate at different speeds. To learn more about differentials, check out this video on our official blog, On All Cylinders.

A ratcheting sound can be heard around corners as the clutch and spider assembly disengage and is normal. When traction is needed...

A ratcheting sound can be heard around corners as the clutch and spider assembly disengage and is normal. When traction is needed under load, the axles mechanically lock together, forcing the wheels to rotate at the same speed, similar to a spool.

Many Jeep owners install a Dana 30 locker or a Dana 44 locker front and rear locking differential to enhance off-roading capabilities. When the differential is locked, the wheel off the ground doesn't receive any torque due to lack of traction, while the wheel on the ground gets all the torque, enabling the vehicle to move effectively.

Top Brands

Summit Racing carries a large selection of both front- and rear-axle differentials from top-name manufacturers, including Eaton, Detroit Locker, Auburn Gear, ARB, Yukon Gear & Axle, Powertrax and many more.

Individual Parts

Part Groups

Results 1 - 25 of 187

Powertrax Lock-Right Lockers GM 8.875 Inch (12-bolt), Car/Truck 1910-LR

Differential, Lock-Right, Locker, 30-Spline, GM, 12-Bolt, Car/Truck, Each

Part Number: PWT-1910-LR

4.07 out of 5 stars ( 15 )

Estimated Ship Date: Tomorrow

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Eaton Detroit Lockers Ford 8.8 Inch 187C145A

Differential, Eaton Detroit Locker, 31-Spline, Ford, 8.8 in., Each

Part Number: ETN-187C145A

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Eaton Detroit Lockers GM 10.5 Inch (14-bolt) 225S10

Differential, Eaton Detroit Locker, 30-Spline, GM, 10.5 in., Each

Part Number: ETN-225S10

4.96 out of 5 stars ( 25 )

Estimated Ship Date: Tomorrow

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Eaton Detroit Lockers Ford 9 Inch 187SL17B

Differential, Eaton Detroit Locker, 31-Spline, Ford, 9 in., Each

Part Number: ETN-187SL17B

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers GM 10.5 Inch (14-bolt) 1955-LR

Differential, Lock-Right, Locker, 30-Spline, GM, 10.5 in., Each

Part Number: PWT-1955-LR

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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USA Standard Gear Spartan Lockers Dana 30 SL D30-27

Spartan Differential Locker, Dana 30, 27-spline Axle, Jeep, Ford, International, Each

Part Number: SPZ-17000

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Powertrax No-Slip Traction Systems GM 8.875 Inch (12-bolt), Car/Truck 9207883005

Differential, No-Slip Traction System, 30-Spline, GM, 12-Bolt, Each

Part Number: PWT-92-0788-3005

3.88 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers Ford 8.8 Inch 1822-LR

Differential, Lock-Right, Locker, 31-Spline, Ford, 8.8 in., Each

Part Number: PWT-1822-LR

3.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Eaton Detroit Lockers Dana 44 187SL16C

Differential, Eaton Detroit Locker, 30-Spline, Dana 44, Each

Part Number: ETN-187SL16C

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Powertrax No-Slip Traction Systems GM 8.2 Inch, BOP axle 9207822801

Differential, No-Slip Traction System, 28-Spline, Buick, Oldsmobile, Pontiac, 8.2 in., Each

Part Number: PWT-92-0782-2801

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Crown Automotive Spline Differential Case Kits AMC Model 20 J3212192

Differential Case Assembly, Rear, Gray, Metal, Use Existing Hardware

Part Number: CWA-J3212192

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers GM 8.5 Inch 1920-LR

Differential, Lock-Right, Locker, 28-Spline, GM, 8.5 in., Each

Part Number: PWT-1920-LR

4.69 out of 5 stars ( 13 )

Estimated Ship Date: Tomorrow

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Yukon Gear & Axle Grizzly Lockers Dana 60 YGLD60-4-35

Grizzly Locker, Dana 60, 35 Spline, 4.56 Up Ratio, Each

Part Number: YGA-28005

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers GM 8.5 Inch 1921-LR

Differential, Lock-Right, Locker, 30-Spline, GM, 8.5 in., Each

Part Number: PWT-1921-LR

4.4 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers Dana 44 2410-LR

Differential, Lock-Right, Locker, 30-Spline, Dana 44, Open, Each

Part Number: PWT-2410-LR

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers Ford 8/9 Inch 1810-LR

Differential, Lock-Right, Locker, 28/31-Spline, Ford, 9 in., Each

Part Number: PWT-1810-LR

3.5 out of 5 stars ( 8 )

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers Dana 25 2110-LR

Differential, Lock-Right, Locker, 10-Spline, Dana, 25, Front, Each

Part Number: PWT-2110-LR

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Powertrax No-Slip Traction Systems Ford 9 Inch 9206902800

Differential, No-Slip Traction System, 28-Spline, Ford, 9 in., Each

Part Number: PWT-92-0690-2800

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers GM 8.2 Inch 1940-LR

Differential, Lock-Right, Locker, 28-Spline, GM, 8.2 in., Each

Part Number: PWT-1940-LR

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Powertrax No-Slip Traction Systems Chrysler 8.25 Inch 9203822705

Differential, No-Slip Traction System, 27-Spline, Mopar 8.25 in., Each

Part Number: PWT-92-0382-2705

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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USA Standard Gear Spartan Lockers GM 8.5 Inch SL GM8.5-28

Spartan Differential Locker, GM 8.5 in., 28-spline Axle, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: SPZ-17040

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Sep 8, 2025 if ordered today

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Estimated Ship Date: Sep 8, 2025 if ordered today

Powertrax Lock-Right Lockers Chrysler 9.25 Inch 1950-LR

Differential, Lock-Right, Locker, 33-Spline, GM, 9.2 in./9.5 in., Each

Part Number: PWT-1950-LR

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers Dana 41 2415-LR

Differential, Lock-Right, Locker, 10-Spline, Dana, 44, Each

Part Number: PWT-2415-LR

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Powertrax Lock-Right Lockers AMC Model 20 1710-LR

Differential, Lock-Right, Locker, 29-Spline, AMC, Model 20, Each

Part Number: PWT-1710-LR

Not Yet Reviewed

Estimated Ship Date: Aug 26, 2025 if ordered today

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Estimated Ship Date: Aug 26, 2025 if ordered today

Powertrax Lock-Right Lockers Ford 10.25 Inch 1840-LR

Differential, Lock-Right, Locker, 35-Spline, Ford, 10.25 in., Each

Part Number: PWT-1840-LR

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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