ARB High Performance On-Board Compressor for ARB Air Lockers - CKMA12

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  • ARB 4x4 Accessories | Part Number: ARBCKMA12
  • Fitment:Universal Fit
  • Availability:In Stock
  • Number Of Fitting Ports:1



The ARB Air Compressor is an integral component of the air locker system. The ARB Compressor Kit is designed to operate single as well as a dual (front and rear) locker system. Not only will it enable the ARB lockers to work but it is also capable of supplying air pressure for other occasions, such as refilling a low tire. This air compressor features a die cast aluminum storage tank, oil-less operation and the highest air delivery capacity of all the mid-price range compressors (100 psi) setting on cut off switch. The ARB Air Compressor Kit contains a pre-assembled compressor, mounting clamp, backing plate, pressure switch, wire loom and all the mounting hardware. Current draw of 9 amps during no load, 20 amps for full load.

There's nothing quite as satisfying as having a vehicle that performs above the rest when it comes to off-road riding, but that means you have to invest some time and money. ARB Air Lockers are a great way to give your vehicle more traction when it comes to off-road riding, but you need to make sure you have an ARB air compressor to accompany it. These air compressors are designed with a full seal to resist moisture and dust so they can keep your ARB Air Lockers up and running for a long time to come.

An Added Boost

When it comes to changing the performance of your off-road vehicle, sometimes it can be hard to make a big difference. However, ARB Air Lockers can give you a noticeable difference in terms of traction as long as you have the right ARB compressor accompanying them. 4 Wheel Parts is big on making sure every off-road fanatic has access to the parts and accessories they need, which is why we offer a great selection of compressors to go alongside your ARB Air Lockers.

Simplicity Embodied

If you're looking for the easiest maintenance, you can't go wrong with an ARB air compressor kit from 4 Wheel Parts. These air compressors are designed to be virtually maintenance free, which means you don't have to worry about constantly cleaning the compressor or checking for problems when you buy >air accessories from us.

An Easy Solution

Traction is a big deal when it comes to off-road riding, so finding ways to improve traction is important. At 4 Wheel Parts, we do our best to offer you a range of parts and accessories to help with that, as well as things like air compressors to make sure those parts work right. If you're looking for a great deal on a performance upgrade, make 4 Wheel Parts your one-stop shop.

Customer Reviews

4.9 4.9
32 Customer ratings
5.0 This is a great product

Very good product. Hard mounted and connected to a 2.4gal reserve tank. It fills the tank quickly

from Louisville |
5.0 Works great for reinflating tires

Bought the compressor for reinflating tires on my off-road rig. Installation is pretty easy if you’re not using air lockers, but the compressor comes with all the wiring for that so you have to figure out what you need and what you don’t need for the install process. Just got back from a spring trip to Utah and it worked great to air up my 35s when needed.

5.0 Work horse ftw

Works perfect airing up 33's and for 2 diff lockers

5.0 Great compressor for its size

Using it just a compressor to air up my 37’s after a run. Works great, fast just wish the instructions would be more specific for this application and include the tee needed for the pressure switch and air hose connection.

from Ontario Ca |


Question & Answers

19 Answered questions

Q: I have a Toyota Tundra with stock wheels and tires. I surf fish so I drive on the beach and air down. Is this compressor big enough to handle 4 stock tires?  Answer this question

A: I wheel with 33” tires and I have this same compressor it would work great to air your tires up. I’ve used mine for two years so far and it will be used for many more. 

Answered by Husker from Nebraska on 10/19/2021

A: Yes it will.

Answered by Kelly from 4WP Corporate Headquarters on 10/18/2021

Q: Can you tell me what else I would need to mount this under my hood in 2015 Rubicon? Answer this question

A: I got a 2011 rubicon, all you need is a mount, I got mine off metal cloak for $80 I think. Mounted under my hood next to my steering column and my PCM Totally worth it, good luck

Answered by Allan from Upland, Ca on 08/09/2021

A: The ARB High Performance On-Board Compressor for ARB Air Lockers - CKMA12 come with everything you need to mount it under the hood of the 2015 Jeep Rubicon. The pump up kit ARB part number ARB171302 is a nice add-on.

Answered by Dave from 4WP HQ on 08/04/2021

Q: According to ARB this compressor has a 50% duty cycle (30 min on, 30 min off). Is that automatically controlled, or does the user have to comply with the duty cycle rating? If I left the switch on would the compressor cycle on/off to prevent damage? Answer this question

A: The compressor will not monitor its duty cycle. It will shut off if it is over heated, possible from too much duty. Keep plenty of air flow around the compressor such as keeping the hood open for example.

Answered by Drew from Shuswap bc on 06/02/2022

A: Hello It depends on what you are using it for. If you are running ARB air lockers it will cycle on its own every few minutes. There is also a pressure switch that turns it on and off at maximum PSI. Thanks

Answered by Rody on 08/22/2015

Q: I currently use this compressor for my rear lockers.  Can I also use it to air up and what would be needed for that. Answer this question

A: The ARBCKMA12 can run 2 air lockers and it puts out enough volume to pump up tires. The ARB Pump Up Kit is ARB171302.

Answered by Kelly from 4WP Corporate Headquarters on 04/27/2021

Q: Can i run this to a 2.5 gallon air tank as well as use it for a front ARB locker? Answer this question

A: Yes, but we recommend using a manifold kit (Part# 171503) with it, so you can output the air separately to the locker and the air tank.

Answered by Christian from 4WP HQ on 02/23/2021


ARB has been manufacturing 4x4 parts for over 40 years. ARB Air Lockers will amplify the traction of your 4x4 on challenging trails. They give the off-road driver what you need in traction, control and performance. ARB believes in its products so it offers a five year, unlimited mile warranty across the air locker range. ARB 4x4 Accessories includes the suspension system brand Old Man Emu, maker of premium off-road shock absorbers. Old Man Emu premium shocks are developed and tuned specifically for each vehicle application. They come complete with vehicle specific mounting kits for fuss free installation. ARB parts are all developed, engineered and fabricated in-house in Australia. Shop ARB 4x4 Accessories Now


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