Shop Engine Shutdown components for your 2004.5-2007 Dodge 5.9L Cummins to avoid diesel engine runaway. Emergency shutdown systems are designed to cut air intake supply to the engine for a quick and safe shutdown. Industries such as mining, oil refinery, forestry, mobile welding, septic removal, and refueling require vehicles to have an emergency engine shutdown systems installed. Get the Engine Shutdown products you need at XDP from brands like Pacbrake and BD-Power.