{"product_id":"arb-compressor-mdm-air-locker-12v","title":"ARB Single Motor Onboard 12V Air Compressor","description":"\u003cp\u003eThe ARB CKMA12 Single Motor Onboard 12V Air Compressor is a compact, proven, and ultra-reliable source of onboard air for any off-road vehicle. Built with a hard anodized cylinder bore, Teflon impregnated carbon fiber piston seal, and sealed motor housing, the CKMA12 provides years of trouble free performance with minimal maintenance.\u003c\/p\u003e\n\u003cp\u003eThis compressor includes a pressure cut off switch, eliminating the need for a check valve. The 9-foot power harness provides flexible mounting options throughout the vehicle, while the wiring harness includes diode protected circuits for accessory power and illumination. The onboard manifold ports support solenoids for ARB Air Lockers, and optional air couplers can be added to build out your air system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eARB CKMA12 Single 12V Onboard Compressor\u003c\/li\u003e\n\u003cli\u003e9 ft heavy duty power harness\u003c\/li\u003e\n\u003cli\u003eWiring harness with relay, switch, and diode protected accessory\/illumination wires\u003c\/li\u003e\n\u003cli\u003ePressure cut off switch (no check valve needed)\u003c\/li\u003e\n\u003cli\u003eAnodized heat dissipating mounting bracket\u003c\/li\u003e\n\u003cli\u003eOver-pressure safety valve\u003c\/li\u003e\n\u003cli\u003eAll required hardware\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Harness Length:\u003c\/strong\u003e ~9 ft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction: \u003c\/strong\u003eHigh strength engineering grade materials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Bore:\u003c\/strong\u003e Hard anodized for reduced friction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston Seal: \u003c\/strong\u003eTeflon-impregnated carbon fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Protection: \u003c\/strong\u003eInternally thermal protected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealing: \u003c\/strong\u003eMoisture and dust resistant housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManifold Ports: \u003c\/strong\u003eTwo ports designed for ARB Air Locker solenoids\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Harness: \u003c\/strong\u003eSwitch harness includes diodes in red\/yellow \u0026amp; blue\/white trace wires (accessory \u0026amp; illumination)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance: \u003c\/strong\u003eDry system (only requires purging moisture if unused for extended periods)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety:\u003cbr\u003e\u003c\/strong\u003e-Built in pressure cut off switch\u003cbr\u003e-Heavy duty maxi-fuse inline protection\u003cbr\u003e-Over pressure safety valve\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal for any 12V-equipped vehicle:\u003c\/li\u003e\n\u003cli\u003eRock crawlers, buggies, and Ultra4-style rigs\u003c\/li\u003e\n\u003cli\u003eJeeps, trucks, SUVs, and overland builds\u003c\/li\u003e\n\u003cli\u003eUTVs\/SxS (with proper mounting and wiring)\u003c\/li\u003e\n\u003cli\u003eTrailers, expedition vehicles, and service rigs\u003c\/li\u003e\n\u003cli\u003eCompatible with:\u003c\/li\u003e\n\u003cli\u003eARB Air Lockers (direct solenoid support on manifold)\u003c\/li\u003e\n\u003cli\u003eARB Pump Up Kits (requires included T-piece)\u003c\/li\u003e\n\u003cli\u003eARB inflation tools \u0026amp; tire accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary class=\"details__header\"\u003e\u003cstrong\u003eTech Insight\u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp\u003eThe ARB CKMA12 is engineered as a lightweight, reliable air source for tire inflation and locker activation. The built-in pressure cut-off switch automatically stops the compressor at a preset pressure, which means you do not need a check valve in the system. This feature simplifies installation and improves long-term reliability.\u003c\/p\u003e\n\u003cp\u003eAnother key detail: while the motor side of the compressor does not include diode protection, the switch harness does, safeguarding the accessory and illumination circuits during operation. This ensures smoother, interference-free switching and prevents backfeed into the system.\u003c\/p\u003e\n\u003cp\u003eBecause the CKMA12 is a dry system, the only long-term maintenance required is purging air\/moisture from the system if the compressor sits unused for extended periods. The manifold includes two ports specifically designed for installing ARB Air Locker solenoids, making this compressor a solid foundation for a full onboard air + locker system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"ARB","offers":[{"title":"Default Title","offer_id":52986640597357,"sku":"ARBCKMA12","price":359.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0927\/1145\/3037\/files\/0da26ac8bd7900bc1b408880f04d49b1.jpg?v=1769813666","url":"https:\/\/craneaxle.com\/products\/arb-compressor-mdm-air-locker-12v","provider":"Crane Axle","version":"1.0","type":"link"}