Availability
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...
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 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.
Showing In Stock Items. Show All 219 Items.
Differential, Lock-Right, Locker, 30-Spline, GM, 12-Bolt, Car/Truck, Each
Part Number: PWT-1910-LR
Estimated Ship Date: Today
Estimated Ship Date: Today
Grizzly Locker, GM 10.5 in., 30 Spline, Each
Part Number: YGA-28015
Estimated Ship Date: Today
Estimated Ship Date: Today
Spartan Differential Locker, Dana 30, 27-spline Axle, Jeep, Ford, International, Each
Part Number: SPZ-17000
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Eaton Detroit Locker, 31-Spline, Ford, 9 in., Each
Part Number: ETN-187SL17B
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, No-Slip Traction System, 30-Spline, GM, 12-Bolt, Each
Part Number: PWT-92-0788-3005
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Lock-Right, Locker, 28-Spline, GM, 8.5 in., Each
Part Number: PWT-1920-LR
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Lock-Right, Locker, 30-Spline, Dana 44, Open, Each
Part Number: PWT-2410-LR
Estimated Ship Date: Today
Estimated Ship Date: Today
Grizzly Locker, Ford 10.25 in., 35 Spline, Each
Part Number: YGA-28026
Estimated Ship Date: Today
Estimated Ship Date: Today
Grizzly Locker, Dana 60, 35 Spline, 4.56 Up Ratio, Each
Part Number: YGA-28005
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Spartan Differential Locker, GM 8.5 in., 28-spline Axle, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each
Part Number: SPZ-17040
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Eaton Detroit Locker, 30-Spline, GM, 8.5 in., Each
Part Number: ETN-187C148A
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Lock-Right, Locker, 28/31-Spline, Ford, 9 in., Each
Part Number: PWT-1810-LR
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Lock-Right, Locker, 30-Spline, GM, 8.5 in., Each
Part Number: PWT-1921-LR
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Lock-Right, Locker, 31-Spline, Mopar, 9.25 in., Each
Part Number: PWT-1220-LR
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential Carrier, Spartan Locker, 30-spline, Steel, Rear, GM 8.875 in., Each
Part Number: SPZ-17032
Estimated Ship Date: Today
Estimated Ship Date: Today
Grizzly Locker, Dana 44, 30 Spline, 3.92 Up Ratio, Each
Part Number: YGA-28001
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Lock-Right, Locker, 35-Spline, Ford, 10.25 in., Each
Part Number: PWT-1840-LR
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Lock-Right, Locker, 28-Spline, GM, 8.2 in., Each
Part Number: PWT-1940-LR
Estimated Ship Date: Today
Estimated Ship Date: Today
Spartan Differential Locker, Chrysler 8.25 in., 29-spline Axle, Chrysler, Dodge, Jeep, Plymouth, Each
Part Number: SPZ-17038
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Lock-Right, Locker, 30-Spline, Dana 60, Each
Part Number: PWT-2610-LR
Estimated Ship Date: Apr 22, 2026 if ordered today
Estimated Ship Date: Apr 22, 2026 if ordered today
Differential, Lock-Right, Locker, 27-Spline, Dana 35, Each
Part Number: PWT-2311-LR
Estimated Ship Date: Today
Estimated Ship Date: Today
Differential, Eaton Detroit Locker, 30-Spline, Chrysler, 8.75 in., Each
Part Number: ETN-187SL14A
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Differential, Lock-Right, Locker, 30-Spline, Toyota, 8.4 in., Rear, Each
Part Number: PWT-1615-LR
Not Yet Reviewed
Estimated Ship Date: Apr 22, 2026 if ordered today
Estimated Ship Date: Apr 22, 2026 if ordered today
Differential, Eaton Detroit Locker, 28-Spline, GM, 8.5 in., 3-Series, Each
Part Number: ETN-187C149A
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Differential, No-Slip Traction System, 30-Spline, GM 10.5 in., Each
Part Number: PWT-92-0705-3000
Estimated Ship Date: Today
Estimated Ship Date: Today
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