maXpeedingrods Air Suspension Pump Compatible for ford Crown VictoriaAir Compressor[description]Description A device Compatible with pumping air into or out of an enclosed space is called an air pump, which is an emissions component that is part of the secondary air injection system. It is responsible Compatible for pumping clean air into the vehicle's exhaust stream to promote a cleaner and more complete burn before the fumes exit the tailpipe. A pump adds energy to a fluid, resulting in an increase in pressure across the pump,