At what speed can I engage my ARB Air Lockers?

An ARB Air Locker can be engaged at any speed as long as both wheels are spinning at the same rate. If one wheel is spinning faster than the other, what is called “crash locking” will occur and can cause damage to the internal gears. We recommend that the vehicle stops and engages the Air Locker before attempting an obstacle.

Can I replace my factory/OEM locking differential with an ARB Air Locker?

Fitment of ARB Air Lockers to vehicles fitted with OE locking differentials varies from vehicle to vehicle. Please refer to the Air Locker Application Guide for further details.

Do I have to use an ARB compressor to operate ARB Air Locker?

ARB strongly recommends the use of a genuine ARB Air Compressor; however, the Air locker can operate on any alternative air source that meets the requirements as stated in our Air Locker fitting instructions.

Do I require individual compressors for each ARB Air Locker installed in my vehicle?

No, each of our air compressors has provisions to activate 2 (two) Air Lockers i.e., front and rear.

How often do I service my ARB Air Locker?

ARB Air Locker service internals vary depending on vehicle usage, terrain, and conditions. Please refer to the Operating and Service Manual and your vehicles owner manual for routine oil changes.

I bought a vehicle/axle with an ARB Air Locker already installed. I don’t have any of the parts to plum my compressor to the Air Locker. What do I need?

We off a kit (ALAP) that includes everything you need to plum your compressor to the ARB Air Locker.

What differential oil is required for ARB Air Lockers?

We recommend following your vehicle users manual for the quality and viscosity. We DO NOT suggest any oils with limited-slip additives as they can shorten the life of the ARB Air Locker seals.

What is the minimum and maximum air pressure required to operated an ARB Air Locker

The ARB Air Locker will engage at around 70 PSI. However, for faster engagement and disengagement, we recommend an air pressure supply between 100 and 150 PSI.

What is the warranty period for my ARB Air Locker and Compressor?

ARB provides a 5-year (Air Locker) and 2-year (Compressor) warranty that covers defects against workmanship or materials. For further information, please refer to our warranty terms and conditions on our Warranty Page.

Why do I have differential oil coming out of my solenoids?

The number one cause of differential oil traveling up the ARB Air Lines is due to differential housing pressure. If the housing does not vent properly, pressure will push the oil up the lines. To remedy this, check to make sure your factory breathers are not clogged or enlarge breather ports/hoses to allow more ventilation. ARB now offers a breather kit (170112) to help remedy axle ventilation problems.