3-Port Water Pump Assembly

The Roger Clark Motorsport RCM3434 is a performance-oriented 3-port water pump, engineered to enhance engine cooling efficiency. The water pump utilizes a cavitation-friendly cast impeller, a design choice that maximizes coolant flow while minimizing unwanted aeration. Complementing the pump is a corrosion-resistant billet aluminum thermostat housing, ensuring smooth and efficient coolant circulation. This comprehensive kit includes the water pump itself, along with a water pump gasket, thermostat seal, thermostat housing, housing bolts, and pump housing bolts, making it a significant upgrade for engine builds. The RCM3434 is specifically designed to work with EJ20/EJ25 turbo engines that feature the OEM water-to-oil engine cooler, utilizing an extra water barb on the pump. Confirmed applications for the RCM Black Series Water Pump include various Subaru WRX and STI models from 2001 through 2021, provided they are manual transmission and equipped with the 3-Port Water OEM Pump. This includes the 2001-2007 Subaru WRX, 2008-2014 Subaru WRX, 2001-2007 Subaru STI, 2008-2014 Subaru STI, and the 2015-2021 Subaru STI.