Arb Ckma12 12v On-board Compact Air Compressor

Compact. Sealed. Locker-Ready. Trail Proven.

The ARB CKMA12 is a compact, permanently mounted 12V air compressor built to power ARB Air Lockers and handle light-duty air needs out on the trail. Don’t let its size fool you—this unit is a heavy hitter. It’s been torture-tested in ovens, freezers, underwater, and through choking Australian dust. It performs. Every time.

Designed to mount in tight spaces (even inside the cab), it’s quiet, fully sealed, and powerful enough to air up four 35"–37" tires in a single duty cycle. Want more utility? Add ARB's Pump-Up Kit (#171302) and you’ve got a compact inflation station for tires, camping gear, and more.

• Fully assembled and bench-tested 12V air compressor

• OEM-quality isolator switch

• Air Locker-rated pressure switch

• Complete wiring loom with plug-and-play solenoid leads

• Splash-resistant, relocatable air filter

• Mounting hardware with reinforced backing plate

• Photo-illustrated install guide

• Small footprint with class-leading air flow output

• Fully sealed for moisture and dust resistance

• Anodized heat-dissipating bracket with 180° mounting flexibility

• 100% ball bearing motor with low-heat, quiet operation

• High-efficiency, PTFE-impregnated carbon piston seals

• German-made cylindrical roller bearing in compressor piston

• Anti-vibration mounts & sound deadening construction

• Over-pressure safety valve and internal thermal protection

• Maxi-fuse equipped for professional-grade inline protection

• Compatible with ARB Air Lockers

• Optional Pump-Up Kit (171302) enables tire/camp gear inflation

• Universal mount — fits most 12V-equipped off-road vehicles

• Ideal for Land Rover, Toyota, Jeep, all other overland rigs

Part Number: CKMA12

• Can be mounted in engine bay or interior

• Manifold required if running multiple Air Lockers (see ARB #171503)

• Add Pump-Up Kit for inflation use

• Sealed air filter can be relocated for cleaner/cooler intake air

Q: Will this run both front and rear lockers?
A: Yes — with the addition of the ARB Manifold Kit (#171503).

Q: Can I use it to inflate tires?
A: Yes — with the optional Pump-Up Kit (#171302).

Q: Is this waterproof?
A: It’s fully sealed against moisture and dust, ideal for harsh environments.

Q: Where can I mount it?
A: Anywhere you’ve got room and airflow—engine bay, cab, cargo area. It's small and quiet enough for interior installs.

Q: What’s the difference between this and the CKMTA12 twin compressor?
A: This is the compact single-motor version. The CKMTA12 is a dual-motor setup with significantly higher airflow for tire inflation and air tools.

Part Number: CKMA12