Compact High Volume Air Source: Made to take the tough demands of 4 wheel drive vehicles, Works With ARB's Air Locker Differential Lock: Pneumatic supply & electric control for ARB Air Locker(s), Air Locker manifold Kit #171503 required for Air Locker use, Continuous Supply Of Air Power: 2 motors produce 3 CFM at 90 PSI to power many air tools, Rapid inflation of small, medium and large (up to 35") tires, Complete Wiring Harness: Includes Air Locker solenoid plug-in terminals, Sealed, automotive OEM quality, illuminated dash switch, 2 Splash Resistant Washable Air Filters: High-flow sintered bronze filter cartridges stand up to hard use, Water Sealed, 100% Ball Bearing Equipped Motors: No bushings used for extra-long life low heat, & quiet operation, Quality Construction: Engineered, built, & individually dyno-tested in Australia, Fully serviceable in the US; replacement parts readily available, Comprehensive photo-illustrated guide for efficient install,