The ARB Air Locker has been internationally synonymous with traction since 1988, becoming the mainstay traction aid for 4WDers, dirt racers, rock crawlers and government agencies around the world.
Air lockers are often seen as the best of both worlds because when engaged the compressor delivers high-pressure air to the diff centre, pushing a clutch gear that locks a splined bevel gear, effectively ‘locking’ the diff.
When disengaged, however, the diff operates like any other open one.
ARB has continued to evolve its Air Locker design, incorporated features such as forged gears, timed gearing and a two-piece design, and backing the investment up with a five year warranty.
Forging ahead
Forged gears, which deliver increased load carrying capacity and strength, are typically found in the most demanding applications, including heavy…