... a solenoid valve, when the driver opens the exhaust brake switch, the valve in a semi-closed state, making poor car ... products:Cummins piston,Cummins piston ring,Cummins flywheel, Cummins Air-drying ASSY,Cummins feed pump,Cummins relay valve,Cummins radiator,Cummins air ompressor,Cummins connecting rod,Cummins platen assy,Cummins clutch ...