Cat® Solenoids are a specially engineered electromagnet in which a coil of wire is wrapped around a specially shaped core made of steel or iron. Cat® solenoid valves are electromechanical devices designed to open or close the valve used in fluid systems of Cat® heavy-duty equipment. Cat® Solenoids provide reliable performance which enables them to operate in heavy-duty applications such as severe vibration and shock, extreme operating temperatures, thermal cycle, thermal shock, humidity, corrosion, and excessive dust. Each unit includes all critical engineering updates, and is rigorously tested against original specifications, so you know youre getting genuine Caterpillar reliability.Application:Consult your owner's manual or contact your local Cat® Dealer for more information.