ARB CKMA12 On-Board Air Compressor High Performance 12 Volt for Air Locker Differentials and Tire Inflation
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Availability:
Only 2 left in stock, order soon!
Arrives
Wednesday, Sep 9
Color: Multicolor
Features
- Constructed entirely of lightweight, high strength engineering grade materials
- Quality components for quiet operation and extra long life
- Hard-anodized cylinder bore for reduced friction
- Sealed for moisture and dust resistance
- Heavy duty maxi-fuse equipped for professional in-line circuit protection
Description
Voltage: 12V Ideal for: Air Locker, Differentials and Tire Inflation / Quality components for quiet operation and extra long life With a class-leading flow rate, this compressor has been designed for Air Locker activation (on-board model), fast tire inflation, and a range of other functions whether they be for work or play. Constructed entirely of lightweight, high-strength engineering-grade materials. The perfect accessory for off-road provides an immediate source of compressed air anywhere a 12-volt power source is available. Tires perform best when set at a pressure appropriate for the terrain With a class-leading flow rate, this compressor is designed for fast tire inflation and a range of functions whether they be for work or play in a durable carry case for easy storage and versatility. The ARB heavy-duty air compressor has enough output to inflate four 35-inch tires in a single cycle. Each tire takes just over two minutes. The motor is equipped with a 100% ball-bearing design Constructed of lightweight, high-strength engineering-grade materials, it incorporates quality components for quiet operation and extended durability. Teflon-impregnated carbon fiber piston Flow rate (under no load): 0 PSI 3.08 CFM; 29 PSI 2.34 CFM. Suitable for many air tools when used in conjunction with a 1-gallon air tank (optional with ARB CKMA12 on-board model) Permanently mounted into your truck, includes a full wiring loom with Air Locker solenoid plug-in contacts, mounting hardware with a reinforcing bracket, and a quality compressor isolating switch. - Constructed entirely of lightweight, high-strength engineering-grade materials. - Sealed for moisture and dust resistance. - Washable sintered bronze air filter element housed in a splash-resistant cover. - Hard-anodized cylinder bore for reduced friction. -Motor is internally thermal protected. 1. Mount the compressor to the bracket and install the compressor and bracket. 2. Relocated the horn. 3. Hook up the wiring to the compressor and battery. 4. Plug in the relay and the pressure switch. 5. Run the wiring for the power switch.
Brand: ARB
Voltage: 12 volts
Recommended Uses For Product: Tire Inflation
Power Source: Corded Electric
Noise Level: 5 db
Voltage: 12 volts
Recommended Uses For Product: Tire Inflation
Power Source: Corded Electric
Noise: 5 db
Additional Features: Pressure Detection
Capacity: 60 gallons
Maximum Current: 30 A
Hose Length: 6 meters
Tank Volume: 60 gallons
Maximum Pressure: 100
Item Weight: 7.7 pounds
Item Dimensions L x W x H: 12.73"L x 9.16"W x 5.88"H
Color: Multicolor
Style: On Board
Brand Name: ARB
Included Components: Compressor, hardware, wiring
Model Number: CKMA12
Model Name: ARB High Performance Compressor
Manufacturer: ARB
UPC: 192019100427 881348007223
Unit Count: 1 Count
Manufacturer Warranty Description: Warranty
Global Trade Identification Number: 23
Item Type Name: Air Compressor
Manufacturer Part Number: CKMA12
Material Type: Lightweight high-strength engineering grade materials
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Sep 9
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
I purchased this compressor to mount under the hood of my Chevy Colorado. I ordered the compressor and was surprised to have it the next day. I had used the free shipping that stated 5-8 days. I was very surprised. I opened the box to find the compressor and parts to be in excellent condition. The box contained everything needed for installation. It even had ring terminals and connectors to wire the harness to the battery. I was very happy with the wiring harness as well. The harness that is supplied with the compressor is designed for lockers, but I am using this compressor for tire fills. The harness was labeled very well and instructions were clear. I had no trouble with the wiring harness. The harness is plug and play. ARB even leaves one plug disconnected so only a small hole has to be drilled to get the switch to the cab area. I simply taped off the wires that I was not using. The wiring had a nice looking switch that is designed to be recessed in a small cut out. I found the switch to be good. The location I mounted the compressor was very tight, but the mount is made to pivot. I was unaware that the compressor body and manifold tube can also be rotated to facilitate various mounting locations. The compressor itself was heavier that I expected, but that was great. The compressor feels well made. I mounted the compressor and made the appropriate wiring connections under the hood. I actually mounted the switch under the hood as well. I used a small plastic gang box used in home wiring and used a Dremel Tool to route out a hole for the switch. I then used a metal plate to cover the box. I was then ready to use the compressor for the first time. I hit the switch and the compressor fired right up. The compressor only ran for about two seconds and shut down. The compressor comes with a pressure switch that shuts down the unit at around 90-100psi. The manifold tube is very small and it gets to that pressure very quick. The manifold tube also has a built in pressure safety relief valve just in case the pressure switch fails. I am not sure what pressure is required to permit the safety valve to operate. I had to source my own fittings to use the compressor as a tire fill unit. I did not purchase the kit offered by ARB because I can build it cheaper myself. I spent an additional $15.00 to make a manifold for my tire fill kit. I had to buy several pieces due to my mounting location under the hood. I also suggest to anyone that purchases the ARB tire fill kit to buy some Teflon tape. I completed the procedure and was ready to fill a tire. It should be noted that I already had 50 feet of 3/8 air hose and fitting to use the compressor. I wanted enough hose to reach from the engine bay to the tires on my travel trailer without uncoupling the trailer. I had been carrying a portable air tank in my truck that holds 120 psi. I decided to test the compressor by filling it up. I turned on the switch and watched the hose fill with air. The compressor then promptly shut off as designed. I filled my air tank from approx 40 psi to 90psi in approx 1 1/2 to 2 minutes. The compressor stopped filling at 90 psi. I was still impressed at the speed given the size of the compressor. I filled a car tire from 10 psi to 32 psi the next day and was equally impressed at the compressor. I think it was a wise investment and would buy it again if I had to go back. My installation took my friend and I two hours to complete. I had a small area to work with and had to "build" some tools to install some small screws in a tight place. I think my installation time was long, but I had a unique mounting location. Anyone with basic skills could install this compressor easily. I needed to drill three holes. The mounting plate has four holes, but I didn't use one due to mounting location restrictions. This is a good compressor and I hope to use it for many years. Good luck.
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Reviewed in the United States on August 27, 2012 by Kenneth
Color: Multicolor
I purchased this air compressor because of the company reputation and many good reviews. Let me start by saying that the quality of this compressor is very good. I don't expect any performance issues with it and I love the small compact package this offers. Now I want to dive into some of the deficiencies that many people didn't mention and that you should know before you make this purchase. Watch some installation videos on this, then understand that those videos don't tell you that this is an all day or maybe even all weekend install like it was for me. It all seemed pretty straight forward however some details brought my install to a halt even though I consider myself a very capable mechanic. So block off a good chunk of time to do this installation. Buy your own air fittings from the hardware store. I purchased ARB's actual quick connect accessory kit thinking it would streamline the installation. It was a joke. I spend 46 bucks on a kit that I couldn't use. Why? Because 2 of the 3 air ports on the compressor are different and none of the fittings in the accessory kit allowed me to actually connect the quick connect fitting. Just go to the hardware store and buy yourself a regular air hose quick connect fitting and a 1/4 inch T fitting. Unless you have lockers don't plan on being able to use the two blocked off ports on the air chamber on the pump. I'll be returning the accessory kit. While the included wire harness is in fact pretty plug and play its very over complicated. ARB gives you a harness that controls the pump and the option for two locker switches. Most people aren't using lockers. In order to make everything work you have to use the whole wire harness even if you aren't running lockers. I ended up cutting off all of the unnecessary wires for the two extra switches because I didn't want to have to try and conceal a bunch of wires not being used. I'm a electronics technician by trade and they could have made this harness much more streamlined. Thank goodness for the mounting adjustments. I was able to tuck this pump in a very small area and the ability to rotate the pump and air chamber really helped get it right where I needed it. Once everything was hooked up and powered the air compressor works well. I have not yet used it to completely fill 4 tires but I don't have any doubt it will do the job.
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Reviewed in the United States on March 2, 2020 by Chris
Color: Multicolor
The purchase experience with Amazon was typically Amazon perfect; ARB tech 'support' not so much. I purchased the CMK12 to use as a mounted air supply in a R1100GS opting not to get the inflation 'kit' that is offered as the unit is the same and it includes about $100.00 usd for stuff I already had. Getting through to the very very very nice person at ARB was quick and easy-credit where credit is due-however the Company bailed on providing assistance for wiring the compressor which I really do understand but also would not provide a wiring diagram for the kit version stating that none is/was available ????????????? Bottom line is that I was on my own and most probably anyone else who opts to try this also. I was able to confirm that the tappings on the mini air receiver are 1/8" inch BSPP however I found out the hard way that apparently all BSPP to npt fittings are not the same as the two I got from a supply house we do business with did not fit, or rather would not fully thread in to contact/compress the gasket or washer-didn't really need to mount the gauge and pop valve there anyway. After two full days the install was complete and the performance really makes the ordeal worth it: time to fill the front tire, 110-80-19 from 0 to 36 psi approx 26 seconds and the rear tire , 150-70-17 from 0-42psi just under one minute-please note the bike was on the center stand. The engine was off and the bike started normally but of course I would opt to run the engine in the event we have to make a repair-cannot give the current draw as the meters I have read only dc micro/milliA. Cannot imagine anyone not being more than completely satisfied with the ARB compressor. For what it is worth; the only info on the compressor is ARB no country of origin no specs at all the box does state 'made in Australia' but can't help but to wonder if this means the box, the contents or both. Decided to get a meter which reads dc amps and raised the pressure of an unmounted 205 75 R14 trailer tire from 0 psig to about 36 psig, in roughly a minute and 30 seconds. Inrush just under 25A, less than 26A for about 45 seconds and remained under 27A for the duration. Could barely hold my hand on the cylinder head for a second, after 15 seconds the head was only warm BUT the ambient temp was 41*F, dew point 11*F. Hope this helps all considering getting one of these remarkable compressors.
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Reviewed in the United States on July 24, 2023 by Thomas
Color: Multicolor
MADE IN CHINA. That's the FIRST thing that should be known about this compressor, so keep this in mind. With that said, so far, it appears to be a top quality compressor. If you are used to the big box compressors here are a few differences between the ARB and the standard Chinamercan stuff: - quiet, it sounds 'solid and tight', it doesnt make a racket, a nice mellow tone - hard-wired to the battery, no more jumper cables, fumbling for the box, putting the compressor back in the box, etc.. mount it anywhere, including under the hood - switch, relay, and wiring harness all included, mount the switch on the dash somehwere.. use a dremel or whatever you got to cut a space for the switch - good air compression, unlike other big box compressors this one never sounds like its 'struggling', instead it sounds like it is well capable of doing what its supposed to do, this is phychologically reassuring - manifold with pressure switch, this means you hit the 'on' button, it fills the manifold for a split second and the compressor STOPS, now you can go from tire to tire and fill up without having the thing run constantly - the kit does NOT include a hose or tire inflator - sold seperatley... Overall, so far so good, though I havent used it much (thankfully) .. mah use is primarily for tire fills and some random blow-gun action (ie cleaning stuff) What would be better? If it was NOT made in CHINA. Japan or Australia would be prefereable, even if the price were DOUBLE.... Alas this is the way of thy world... I suspect China will have more 'tiers' to their quality as demand and competition continue to grow...
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Reviewed in the United States on May 28, 2015 by Sunshine
Color: Multicolor
Nice. Like real nIce. Compact solid unit. Looks like a very well made piece of gear.
Reviewed in the United States on February 26, 2026 by Athiker03
Color: Multicolor
Excellent 12v air compressor. I'm so impressed with it that I would never buy a different one, except maybe the twin version. This one has been so useful! I use it to air up tires at the end of a trail, blow dust off of gear, and inflate my air mattress. I've had mine installed and working for over a year now. Install was a breeze thanks to the unique mounting system. I have mine mounted inside a small hard case that I mounted in the back of my 2005 Frontier. My only complaint was the instructions, which assume you're using it to power ARB's air lockers. The supplied wiring and hardware is great, but I had already installed a relay block and auxiliary fuse box, so I had to figure out how to make the compressor work with my pre-installed wiring. Overall though, the install was very smooth and pretty easy. The design of the compressor is fantastic and feels very solid. I would not ever worry about how long it would last. Performance out of it has been nothing short of outstanding. It's filled up my tires as well as many friend's tires at the ends of countless off road adventures and has yet to have an issue. It does get warm but never overheats, even after very prolonged use. I can fill my 285/75R16s from 20 PSI to 42 PSI in about 2 minutes per tire, which is great. It has limited use with a blower nozzle, but that's just because I don't have a tank rigged up to it. For my purposes though, it's good enough without the tank. Overall, I can't recommend highly enough. It's become one of my main essentials now.
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Reviewed in the United States on January 29, 2017 by Tom Newpower
Color: Multicolor
I went back and forth for a while before buying this ARB onboard compressor because the price is definitely hard to ignore, but after replacing a cheaper Firestone compressor with this setup, I completely understand why people recommend ARB. The difference in build quality was noticeable immediately. The ARB feels substantially more solid, runs smoother, and fills much faster than the previous compressor I had. My old Firestone unit worked for a while, but it constantly felt like it was struggling and eventually became unreliable. This has been the opposite experience. I use onboard air enough that reliability matters more to me than saving a little money upfront. Whether it’s airing tires back up, running air bags, or just having dependable onboard air available when I need it, this compressor has been consistently solid. It also recovers pressure quickly and doesn’t seem nearly as stressed during longer use. Another thing I appreciate is that ARB didn’t just focus on performance — the wiring, fittings, mounting hardware, and overall fit and finish all feel well thought out. It feels like a product designed for long-term use instead of something disposable. Yes, it’s expensive. But after wasting money once already on a cheaper compressor, I honestly wish I would’ve just bought the ARB from the beginning.
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Reviewed in the United States on June 15, 2026 by Jared Bayles
Color: Multicolor
First, if I could give it 6 stars, I would. Before the nitty gritty details get fleshed out, you will love this compressor. Set up: it is very important to spend time to choose a location in/on your vehicle that is cool and within your skill set. If you choose the rear of your vehicle you will need large Guage battery wire to add onto the supplied wire (which is more than long enough for installation in the engine bay). If you choose to run the switch into your dash you will need to prepare, find two connections (an ignition source and power source). This means you need to have adequate skills to run wires through the firewall, find and splice wires, and cut an opening to mount the switch. Do yourself a favor: be prepared with a plan before you begin installation. Connections: I chose to keep the switch and all components in the engine bay, as seen in the picture. That said, Jeeps have gigantic engine bays. I used a fuse "add a circuit". It cost $10 at Autozone and it took about 3 minutes to connect. I would recommend the same approach if you choose to install into the dash, it is that easy. Mechanical connections; it comes with all you need to set up but you will to buy the specific pieces you need for your setup (again, PLAN ahead). Use: I have 31" tires. It took me longer to let air out than the compressor did to inflate them. I aired down to 10psi then inflated to 45psi, it was done in about 10 minutes. Get yourself a Guage pressure tool and you will cut at least 1 minute off. In that ten minutes the compressor reached a few hundred degrees ( I know because I accidently touched it, big dummy). So, again, find a cool and open location. I am seriously amazed. The finished installation runs around $300, depending on your custom setup. For an inexpensive option this tool is well built and performs it's given function quite well. I want one for each of my other vehicles. Buy it, NOW.
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Reviewed in the United States on September 9, 2021 by TexasHunting