ARB Single Motor 12V On-Board Air Compressor (CKMA12)
The staple 4x4 upgrade — a permanent, sealed source of compressed air for airing down, airing up, running lockers, and trail repairs.
Air Is Freedom Off-Road
Few 4x4 accessories earn their keep like readily available on-board air. Lowering tire pressure dramatically improves traction across sand, rock, and mud — and having a compressor along means you can air right back up before you hit pavement. It's also the fastest way to re-seat and re-inflate a repaired tire when a trail throws punctures at you.
The ARB CKMA12 is a permanently mountable single-motor compressor that runs off any 12V source, giving you compressed air on demand and the independence to travel further with confidence.
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Built to Last
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Sealed for moisture and dust resistance (IP55) — shrugs off water crossings and dusty trails
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Hard-anodized cylinder bore for reduced friction and longer life
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Teflon-impregnated carbon fiber piston seal for maximum, trouble-free service
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Anodized mounting bracket dissipates motor heat and lets the compressor rotate 180° for flexible mounting
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Over-pressure safety valve and an internally thermal-protected motor guard against extreme conditions
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Heavy-duty maxi-fuse included for professional in-line circuit protection
- Constructed entirely of lightweight, high-strength engineering-grade materials
📋 Specifications
Part #: CKMA12 · Voltage: 12V · Motor: Brushed Single · Design: Onboard
Max PSI: 100 · Max Amps: 32 · Air Flow: 3.08 CFM @ 0 PSI / 2.34 CFM @ 29 PSI
Duty Cycle: 50% (30/30) · IP Rating: IP55
Dimensions: 7.5"L × 3.86"W × 5.7"H · Weight: 7.7 lb
Warranty: ARB limited warranty · Individually leak, current-draw & flow tested at the factory
FAQ
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Single or twin — which do I need?
The single (CKMA12) handles tire fills and air lockers great for most builds. Step up to the twin (CKMTA12) if you want noticeably faster fills or run larger tires / heavier air demand.
Will it run ARB air lockers?
Yes — the CKMA12 is a common choice to power ARB air lockers plus general tire inflation.
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Is it weather-sealed?
Yes — IP55 rated, sealed against moisture and dust for off-road use.
Does it need a special mount for my vehicle?
The compressor mounts universally, but vehicle-specific brackets make installs cleaner. See the paired mount below for the 2025+ 4Runner i-Force MAX.
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Complete Your Setup
Step up to the high-output twin-motor version for faster fills and heavier air demand.
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DV8 Off Road mount for the 2025+ hybrid 4Runner — secures this compressor in the rear cargo area.
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