Powertrax Lock-Right Differential Locker 1920-LR for GM 8.5-Inch, 28-Spline

Upgrade your drivetrain with the Powertrax Lock-Right Differential Locker, Part Number 1920-LR. Designed for GM 8.5-inch differentials with 28-spline axles, this automatic locking differential improves traction by distributing power to both drive wheels when additional grip is needed. It is a practical solution for drivers seeking enhanced performance on challenging terrain, uneven surfaces, and low-traction conditions.
The Lock-Right uses a fully mechanical locking design that operates without compressed air, electrical wiring, or external controls. This air-restricted-free configuration helps simplify installation and maintenance while providing dependable engagement when torque demands require improved traction. Under normal driving conditions, the locker allows differentiated wheel speeds for predictable operation during turns.
Constructed from durable steel components, the Powertrax 1920-LR is built to withstand demanding drivetrain loads and repeated use. Its automatic operation helps preserve a familiar driving experience while adding the traction benefits of a locked differential when one wheel begins to slip. Verify vehicle, axle, carrier, and spline compatibility before installation to ensure proper fitment.
Designed for GM 8.5-inch applications using 28-spline axles, this Powertrax Lock-Right locker is supplied as an individual unit. Professional installation is recommended, and all installation procedures should follow the manufacturer’s instructions and applicable drivetrain service specifications.

Features:

• Brand: Powertrax

• Part Number: 1920-LR

• Product Type: Automatic locking differential locker

• Application: GM 8.5-inch differential

• Axle Compatibility: 28-spline

• Construction: Durable steel

• Operation: Fully mechanical engagement without compressed air or electrical controls

• Function: Improves traction by helping deliver power to both drive wheels

• Fitment: Designed for select GM applications from 1978 through 1988; verify compatibility before installation

• Quantity: Each