Compressed air actuates a piston within the ARB differential that engages a locking gear, instantly locking the differential and directing drive torque to both wheels equally for maximum traction across the most difficult terrain. What sets it apart from conventional locking differentials is that the driver has full control over when the differential should be open or locked. The ARB can be turned off for street use, eliminating any of the quirkly handling manners common to an automatic locker. Icy roads can be a scary situation for automatic locker-equipped 4x4s but with the ARB it's not a problem, just turn them off if you don't like the locker's effects on the ice. Air Locker does not have an adverse effect on tires, transmissions or handling in highway operation unlike automatic and limited slip differentials Air Locker is silent in operation unlike most automatic type locking differentials When engaged the Air Locker will not allow one wheel on a drive axle to spin hopelessly while the other wheel remains motionless.
Full power is transmitted to both wheels.
We have installed hundreds of these locking differentials without problems. Remember ARB advises that you have your Air Lockers installed only by authorized installers such as North Shore Off-Road. Recently North Shore Off Road installed a set of ARB Air Lockers in a 2000 Ford Powerstroke F250. The old diffs were removed from the truck. ARB on the left, factory limited slip on the right.