ARB CKMA12 Single-Motor Onboard 12V Air Compressor
Add a dependable source of onboard compressed air to your truck, SUV, Jeep, or off-road vehicle with the ARB CKMA12 single-motor 12V air compressor.
Designed for permanent vehicle installation, the CKMA12 can be used to operate compatible ARB Air Lockers and, when paired with the appropriate ARB inflation hose and fittings, reinflate tires after airing down for off-road driving.
The compressor delivers up to 3.08 CFM at 0 PSI and 2.34 CFM at 29 PSI. Its compact onboard design makes it suitable for engine-bay, cargo-area, or other protected mounting locations where space is limited.
The CKMA12 uses a brushed 12V motor, hard-anodized cylinder bore, Teflon-impregnated carbon-fiber piston seal, internal thermal protection, and an over-pressure safety valve. ARB also equips the compressor with a sealed wiring system, heavy-duty inline fuse protection, and an IP55 rating for dust and moisture resistance.
This listing includes one ARB CKMA12 onboard compressor kit. A tire-inflation hose kit is required for tire inflation and is sold separately.
Product Features
- ARB single-motor onboard air compressor
- Designed for permanent 12V vehicle installation
- Suitable for compatible ARB Air Locker activation
- Can support tire inflation with the proper hose and fittings
- Maximum airflow of 3.08 CFM at 0 PSI
- Airflow of 2.34 CFM at 29 PSI
- 100 PSI maximum operating pressure
- 50% duty cycle
- Brushed 12V motor
- Internally protected against excessive temperature
- Hard-anodized cylinder bore
- Teflon-impregnated carbon-fiber piston seal
- Over-pressure safety valve
- IP55 dust and moisture resistance rating
- Repositionable anodized mounting bracket
- Heavy-duty inline fuse protection
- ARB part number CKMA12
- Three-year ARB warranty
Common Uses
The ARB CKMA12 can be incorporated into an onboard-air system for:
- ARB Air Locker activation
- Tire inflation after off-road airing down
- Reinflating repaired tires
- Off-road and overland vehicle preparation
- Trail and recovery air-system setups
- Utility and service-vehicle applications
The required hose, fittings, air chuck, manifold, tank, and accessories depend on the intended installation.
Compressor Specifications
- Manufacturer: ARB
- Product: Single-Motor Onboard Air Compressor
- ARB Part Number: CKMA12
- Velocity Shop SKU: ARBCKMA12
- Barcode: 881348007223
- System Voltage: 12V
- Motor Type: Brushed single motor
- Installation Type: Onboard
- Maximum Pressure: 100 PSI
- Maximum Current Draw: 32 amps
- Duty Cycle: 50% / 30 minutes on, 30 minutes off
- Airflow at 0 PSI: 3.08 CFM / 87.2 LPM
- Airflow at 29 PSI: 2.34 CFM / 65.9 LPM
- Pressure-Switch Range: Approximately 70 PSI on / 100 PSI off
- IP Rating: IP55
- Length: 7.5 inches
- Width: 3.86 inches
- Height: 5.7 inches
- Listed Product Weight: 7.7 pounds
- Warranty: Three years
- Quantity: One compressor kit
Kit Components
The CKMA12 kit includes the onboard compressor and the primary components required for a typical ARB installation, including:
- ARB CKMA12 compressor assembly
- Compressor mounting bracket and mounting hardware
- Air filter assembly
- Pressure switch
- Compressor wiring loom
- Sealed relay
- Heavy-duty fuse protection
- ARB compressor control switch
Air Locker solenoids, tire-inflation hose, air chuck, air tank, vehicle-specific mounting bracket, and other optional air-system accessories are not included unless specifically shown or stated.
Tire-Inflation Notice
The CKMA12 does not include a complete tire-inflation hose setup.
For tire inflation, add a compatible ARB pump-up kit or inflation hose with the appropriate compressor fitting. The ARB E-Z Tire Deflator also pairs well with this compressor for airing down before off-road driving and reinflating afterward.
Air Locker Compatibility
The CKMA12 is designed to provide compressed air for compatible ARB Air Locker systems.
Air Locker installation may require separate solenoids, fittings, tubing, switches, and axle-specific differential components. Confirm the requirements for the exact Air Locker and vehicle before ordering accessories.
Installation Note
Professional installation is recommended.
Mount the compressor in a protected, well-ventilated area above the expected waterline. Avoid locations exposed directly to road spray, standing water, excessive exhaust heat, or moving components.
The compressor must be connected to a 12V electrical system using the supplied ARB wiring loom, relay, and circuit protection. Do not connect the CKMA12 to a 24V system.
Follow the ARB installation guide for mounting, pressure-switch installation, air-filter placement, electrical connections, and leak testing. Confirm that the compressor and wiring are securely mounted before operation.
Updated: 8-6-2026
Proposition 65 Warnings.
Cancer and Reproductive Harm. See details below.
Items that are not CARB Legal will not be sold and ship to California or CARB states.
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