ARB Differential Case Assembly for Air Locker

The ARB Differential Case Assembly is a replacement differential carrier case for ARB Air Locker air-operated locking differentials. It is also called an Air Locker diff case or differential carrier. It lets you service or rebuild an existing Air Locker with a case made to ARB's specifications.

Key Features:

• Made for ARB Air Locker locking differentials used in front and rear 4x4 axles
• Fully machined nodular iron construction, which gives the rigidity of a one-piece factory differential case
• Carries twice the standard number of pinion gears, which helps the differential cope with high torque loads
• Works with ARB's patented timed locking mechanism and its flange cap, seal housing and cross shaft components
• Made as part of ARB's Air Locker design, which is built for strength, durability and fatigue resistance

An ARB Air Locker runs as an open differential until you switch it on. When you flick the dash-mounted switch, compressed air goes through a nylon air line to the seal housing and locks the differential for more traction on rock, sand, mud, snow or gravel. Replacing the case with a genuine ARB part helps keep the unit working as designed. Installation should be done by a qualified differential technician using the correct differential setup tools.