The EWP115 Alloy (24 Volt) and LCD EWP & Fan Digital Controller Combo – simple, do-it-yourself, easy to install, designed to complement or replace your existing belt-driven, mechanical water pump and engine thermostat. The EWP115 Alloy will fit most vehicle makes and models fitted and excel on large six-cylinder, V8 engines. The LCD EWP & Fan Digital Controller is scientifically calibrated to manage the flow rate of engine coolant to lock onto a targeted engine temperature.