The Air Eject is a simple, air operated, pneumatic connector which permits connecting an air pressure line to a vehicle. When the engine is cranked the Air Eject automatically disconnects the air line thus preventing the vehicle from being driven away with the line connected. A solenoid valve wired to the vehicle's starter is energized when the engine is started. This provides air pressure to a cylinder which extends to release the air line. The Air Eject is supplied with the mating air line connector and check valve. Installation and wiring on the vehicle are simple and easily accomplished.