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ARB CKMA12 12V on-board air compressor front view


ARB air compressor installed in vehicle engine bay


Sealed IP55 construction of ARB CKMA12 compressor


Hard-anodized cylinder and piston assembly of ARB compressor


ARB CKMA12 mounting bracket and anti-vibration mount
Relocatable air filter assembly on ARB on-board compressor
ARB CKMA12 12V on-board air compressor front view


ARB air compressor installed in vehicle engine bay


Sealed IP55 construction of ARB CKMA12 compressor


Hard-anodized cylinder and piston assembly of ARB compressor


ARB CKMA12 mounting bracket and anti-vibration mount
Relocatable air filter assembly on ARB on-board compressor

ARB

ARB High Performance On-Board Air Compressor 12V for Air Lockers – Single Motor (CKMA12)

1 review
$359.95 Sale Save

Engineered as an integral component of ARB Air Locker setups, this compact single-motor compressor is designed to operate single or dual (front & rear) locker systems, while also providing dependable compressed air for general tasks such as tire inflation.

Built with fully sealed, oil-less operation, the CKMA12 resists moisture and dust intrusion for long-term reliability in harsh off-road environments. A hard-anodized cylinder bore, PTFE-impregnated carbon fiber piston seal, and ball-bearing motor design ensure efficient performance, low heat, and quiet operation. With a 100 PSI cut-off pressure, high airflow for its size, and integrated safety protections, this compressor is trusted by off-roaders worldwide.

Key Features

  • Designed for ARB Air Locker systems (single or dual lockers)
  • 12V single-motor on-board compressor
  • Fully sealed against moisture & dust (IP55 rated)
  • Oil-less operation for low maintenance
  • 100 PSI pressure switch cut-off
  • High airflow for compact size
  • Hard-anodized cylinder bore for reduced friction
  • PTFE (Teflon) impregnated carbon fiber piston seal
  • Anti-vibration sound-deadening mount
  • Repositionable anodized mounting bracket (180°)
  • Relocatable splash-resistant air filter
  • Washable high-flow sintered bronze filter element
  • Over-pressure safety valve
  • Internal thermal motor protection
  • Heavy-duty Maxi-Fuse for circuit protection

What’s Included

  • Pre-assembled ARB CKMA12 compressor
  • Mounting clamp & backing plate
  • Pressure switch
  • Wiring loom
  • Mounting hardware
  • Integrated safety fuse

Perfect For

✔ Vehicles equipped with ARB Air Lockers
✔ Off-road & overlanding builds
✔ Tire inflation after trail use
✔ On-board air systems
✔ 4x4, SUV, and truck applications

Ensure reliable locker operation and on-demand air—install the ARB CKMA12 On-Board Air Compressor today.

  • Part Number: ARBCKMA12
  • Voltage: 12V
  • Max Pressure: 100 PSI
  • Duty Cycle: 50% (30 min on / 30 min off)
  • Max Current Draw: 32 Amps
  • No-Load Current: 9 Amps
  • Air Flow @ 0 PSI: 3.08 CFM
  • Air Flow @ 29 PSI: 2.34 CFM
  • IP Rating: IP55
  • Dimensions:

    • Length: 7.5 in

    • Width: 3.86 in

    • Height: 5.7 in

  • Weight: 7.7 lbs
  • Material: Lightweight, high-strength engineering-grade materials
  • Fitment: Universal
  • Prop 65: No
  • Warranty: Limited 3-year manufacturer warranty

The origins of ARB can be traced back to Australia’s remote Top End, circa 1975. A region of vast distances and rugged terrain, it was fast becoming a Mecca for the nation’s burgeoning 4WD community. However, the very environment that attracted 4 wheelers also wreaked havoc on their equipment – when driving in extreme conditions, only the best 4×4 accessories will do.

This was the conclusion drawn by Tony Brown during his travels at the time. While exploring the treasures of the Top End, the skills Tony gained from working on his Land Rover were regularly called on to mend damaged bull bars and broken roof racks. Bar work back then was crude, not at all suited to overland touring, and through this experience an idea was born – high quality equipment that met the vigorous demands of 4WD owners.

Upon returning to Melbourne, Tony put theory into practice via the family garage, where he sought to address the product deficiencies he’d encountered. His vision called for a combination of sound design principles and reliable raw materials… a simple solution to an endemic problem. The concept was embraced when it hit the fledgling 4×4 market, and ARB – the initials of Anthony Ronald Brown – was founded.

Customer Reviews

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Filter Reviews:
01/07/2021

Reliable and inflated tires plenty fast, good balance between price and speed!

The ARB pushes so much more air than my old Viair compressor. Being hard mounted, I have one less bag loose around the trunk. Mounted it in the engine bay and put together my own two tire inflation hose. Would suggest just getting the ARB inflation kit (single hose) and inflator with this if you want just single tire inflation. This compressor is plenty for pumping tires. Reliable and inflated tires plenty fast, good balance between price and speed. Powerful little compressor with ARB quality and rep. It compact enough to fit in tighter engine bays as well. Comes with wiring harnesses with easy positive and negative wiring to battery and one to a switch. 4WD Crew made the decision easy with a good price. Compressor was in stock and arrived in a few days, sooner than I expected.

4WD CREW ARB High Performance On-Board Compressor for ARB Air Lockers Review