ARB On-Board 12V Single Air Compressor — On-Board Air for Lockers & Tires | CKMA12

The ARB CKMA12 Single Motor On-Board Air Compressor is the standard on-board air source for single-locker 12V builds. Compact and permanently mounted, it delivers reliable Air Locker engagement and tire inflation in a lightweight, high-strength package engineered for long-term under-bonnet or in-cab installation.

Key Features

• Engages ARB Air Lockers on demand for instant traction
• Inflates tires and powers air tools
• Sealed for moisture and dust resistance — suitable for under-bonnet or in-cab mounting
• Hard-anodized cylinder bore for reduced friction and extended service life
• Teflon-impregnated carbon fiber piston seal for maximum trouble-free life
• Anodized mounting bracket dissipates motor heat; repositionable 180° for flexible fitment
• Thermally protected motor against extreme temperature damage
• Over-pressure safety valve equipped
• Heavy-duty maxi-fuse for professional in-line circuit protection
• Constructed entirely of lightweight, high-strength engineering-grade materials for quiet, long-life operation
• Available in 12V or 24V configuration

Performance

• Air flow @ 0 PSI: 3.09 CFM
• Air flow @ 29 PSI: 2.34 CFM
• Max pressure: 150 PSI
• Max current draw: 17.2 A
• Duty cycle: 100% (60/0)

Specifications

• Part number: CKMA12
• Brand: ARB
• Voltage: 12V DC
• Motor configuration: Single
• IP rating: IP55
• Weight: 8.8 lb
• Country of origin: Australia

In the Box

• CKMA12 single motor compressor unit
• Wiring harness with maxi-fuse
• Mounting hardware (180° repositionable bracket)
• Air fittings and hose

Note: The CKMA12 is the 12V single-motor on-board variant. For higher airflow or dual-locker builds, see the twin-motor CKMTA12. For 24V vehicles, see the CKMA24. For a portable option, see the CKMP12.