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 of the axle are spinning at or close to the same speed. 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 prior to attempting an obstacle.

Can I air up tires with the ARB Compact Compressor CKSA12?

It is not recommended to use the ARB Compact Air Compressor (part no. CKSA12) to inflate tires. This compressor was designed only to engage ARB Air Lockers. For tires up to 33” in size we recommend the ARB Medium Compressor (part no. CKMA12) and for tires above 33”, the ARB Twin Motor CKMTA12 compressor.

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 Air Locker Application Guide for further details.

Do I have to use an ARB compressor for my air locker?

ARB strongly recommend use of a genuine ARB air compressor, however, the Air locker air system can be operated on any alternative air source that meets the requirements as stated in our Air Locker fitting instructions.

Do I require individual compressors for each air locker on 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.

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 part number ALAP that includes everything you need to plum your compressor to the Air Locker. This is available for purchase through any authorized ARB Dealer.

What additional accessories are required for Tire inflation (on a vehicle mounted compressor)

For Tire inflation, the vehicle mounted compressor requires addition ARB Pump Up Kit #171302 which includes 6 metres air hose, quick connector coupling, clip on Tire inflator, and accessories.

What differential oil is required for ARB Air Lockers?

We recommend to follow your vehicle users manual for the quality and viscosity. We DO NOT recommend 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 Air Locker

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

What is the warranty period for my 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 available here. 

Where do I mount my compressor?

ARB vehicle mount compressors can be installed in various locations on the vehicle, including the engine bay, cabin, rear cargo area, etc. Please refer to ARB Air Compressor User Manual for further details regarding mounting positions.

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

The number one cause of differential oil traveling up the ARB Air Lines are 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.

Why do I have to have my engine running when airing up tires with an ARB Compressor?

The ARB Compressor will perform better when it receives 14V output from the alternator vs the 12.6V from the battery alone. In addition, the battery will not be depleted by the compressor if the engine is idling.