The Air Eject HP 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 HP automatically disconnects the air line, thus preventing the vehicle from being driven away with the line connected. Designed specifically for vehicles with high pressure brake systems, the Air Eject HP will reliably disconnect the air line at any pressure between 20 and 175 PSI. 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 HP is supplied with the mating air line connector, and check valve. Installation and wiring on the vehicle are simple, and easily accomplished.