Universal Motor PumpPump has adjustable pressure relief valve set at 400psi.Builit in bypass so fluid circulates so that pump will not stall.Motor has thermal overload protection.Includes all necessary fittings for a 12 volt single cylinder system.Kit contains Biodegradable oil and funnel.Heavy duty solenoid vales that lock cylinder in place.18″ wire harness with color coding instructions for other brands.Installation Instructions Quick Guide (pdf)