The ARB Air Compressor is an integral component of the air locker system. The ARB Compressor Kit is designed to operate single as well as a dual (front and rear) locker system. The ARB Air Compressor Kit contains a pre-assembled compressor, mounting clamp, backing plate, pressure switch, wire loom and all the mounting hardware. Compressor mount inside engine compartment, fits the ARB small and large compressor (not the twin). Direct bolt in using factory hardware. Retains access to brake master cylinder Parts are black powdercoated.