2003-2007 Cummins 5.9L BD Diesel Positive Air Shutdown Kit w/o Electronics (1036720-M)Some industries such as mining, oil refinery, forestry, mobile welding, septic removal and refueling require some vehicles to have an emergency engine shutdown in place. The most effective method for this is to cut the air supply to the Diesel engine ensuring fuel ignition to cease. With BDs Emergency Engine Shutdown, an inline butterfly valve is placed in the air intake line and when activated by its heavy duty electrical solenoid, the engine will