ARB On-Board Twin High Performance 12 Volt Air Compressor - CKMTA12 |

ARB On-Board Twin High Performance 12 Volt Air Compressor - CKMTA12

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ARB on board compressor
Providing optimum power, the ARB twin motor design delivers class-leading air flow for fast inflation purposes. Constructed of lightweight, high-strength engineering grade materials, it incorporates quality components for quiet operation and extended durability. The twin motors incorporate internal thermal protection against extreme temperature damage while a heavy duty in-line maxi fuse for each motor provides professional circuit protection. Available as either a portable kit with a 4L air tank, inflation accessories and a durable carry case or a vehicle mounted kit with associated wiring loom and mounting hardware.

There's nothing wrong with being bullish about upgrading your off-road vehicle, in fact, we encourage that at 4 Wheel Parts. This is why we offer you everything you need to give you the best performance from your vehicle, including this ARB twin compressor designed to power and control the ARB Air Lockers that can give your vehicle a serious boost when it comes to traction. You don't even have to worry about whether or not you're getting the best air compressors when you shop with us since all our parts and accessories come from brands you know and trust.

Completely Compatible

If you need a specific part or accessory to complement another part or accessory on your off-road vehicle, it can be hard to find compatible options. Lucky for you, finding an ARB twin air compressor that's compatible with your ARB Air Locker is easy when you make 4 Wheel Parts your go-to destination for all the parts you need. When you buy a part or accessory we list as compatible, you can count on it fitting like a glove.

Innovative Design

The brands we carry at 4 Wheel Parts are all about innovation, which is why these air on-board accessories feature innovative designs that put them above the competition. We're proud to carry a wide selection of parts and accessories that are ahead of the curve in terms of ingenuity.

A Better Way

Shopping can be a pain in the neck, but 4 Wheel Parts simplifies that whole process. If you're looking for an ARB dual compressor to go with your ARB Air Locker, we've got exactly what you need. Since you get a genuine ARB compressor when you shop with us, it's guaranteed to fit and perform like it was designed to. If you want the best deals on the best off-road parts and accessories, you have to shop at 4 Wheel Parts.

Customer Reviews

4.8 4.8
12 Customer ratings

Customer Images

3.0 Good, when it works

First off, 4WheelParts delivered the item quickly and it was well packaged. No complaints. This review and rating is primarily focused on the compressor which broke after airing up the 3rd tire. Diagnosed the problem to be the pressure switch. ARB Support sent replacement switch which arrived within the week. Had to use a lathe with carbide tips just to get a socket to fit around the switch and not hit the stuff around it. Replacement switch works and all okay for now. Negatives: - Pressure switch broke (I may have just been unlucky here) - Fiddly design which makes it a pain to diagnose - The design won't allow the use of off-the-shelf sockets Pros: - Manual is very helpful - ARB Support is very responsive - Compressor when working is very quick For all the rave reviews I read about this compressor, banging on about reliability, I guess I must have been unlucky. Nevertheless, in the pursuit of making this as compact as possible, the design compromises on serviceability. Make sure you bring a 1-1/16th SAE 6-point deep socket which has a thin-wall (ARB Support neglected to mention the last part) on those overland trips!

5.0 This is the compressor you want!

Thr ARB CKMTA12 compressor is awesome! Makes airing back up so quick and easy. The included instructions are great and make installation is very straight forward. I paired this compressor with the 4 wheel tire inflation system from Up Down Air and the set up works flawlessly!

from CA |
Mounted in my FJ Cruiser with the blank tray from Power Trays
Using the compressor with the Up Down Air system


Question & Answers

9 Answered questions

Q: 2 questions; 1- would it be beneficial to use rubber grommets to help isolate vibration noise if yes what would you recommend. 2nd - Regarding mounting brackets does this come with mounting brackets if not what would for a 2018 Colorado ZR2. Answer this question

A: For my application, I did not use any rubber grommet. The unit is directly bolted to the custom tray in the engine bay. It did not come with any bracket, you have to search the webz for the ideal place in your truck, and if there trays/adapters available. If you have to do it other than the engine bay area, you have to run a longer heavier gauge wire. The OEM wire is just enough to run in or around the engine bay unless you have other power source. 

Answered by Reece from San Jose, CA on 02/23/2021

A: Probably, but would depend on your mounting solution. It doesn’t come with mounting brackets, but there are aftermarket manufacturers that make ARB compressor mounting brackets for specific vehicles, it looks like 589 Fab has one for the Colorado. 

Answered by Caleb on 02/20/2021

Q: Can you run air tools directly off this compressor or is an air tank needed? Answer this question

A: Run a tank to keep the power up or the compressor will just cycle the whole time

Answered by Rb88 from Md on 11/03/2020

A: You would need an air tank. And a decent sized one. Another option is to carry an electric ratchet and/or impact wrench. Or get a PowerTank if you are stuck on air tools.

Answered by Fetus114 from Los Angeles CA on 11/02/2020

Q: Will this mount under a hood of a chevy colorado? And can it air up 37 inch tires and run airtools? Answer this question

A: Hello sasquatch, Yes, this will mount under the hood of your vehicle. It can air up 37" tires. To run air tools will require adding a minimum of a 1.5 gallon air tank. Thank you for the question.

Answered by RK on 07/04/2015

Q: What is the max PSI output? Answer this question

A: Hello The safety cut off switch is set at 150 psi that is the max it will go up to.

Answered by Rody on 12/06/2014

Q: How loud is the compressor? Too loud to be mounted behind the back seat of a mega cab? Answer this question

A: Thanks for the inquiry dm357, the ARB 4x4 Accessories Twin Air Compressor part # ARBCKMTA12 is much better on mounting under the hood or along the frame, it is a little noisy for inside a cab.

Answered by RK on 09/25/2014


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 she needs 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