EJ257 and EJ255 engines are using a low cost stmped impeller water pump that is inferior to this JDM spec closed back cast impeller water pump. The stamped impeller pump is less efficient and more susceptable to cavitation. We suggest installing a closed-impeller pump on any performance or motorsport Subaru engine build. Pump kit includes pump, pump gasket, and thermostat gasket (all OEM).
Now available with or without port for factory oil cooler (MY2008-2014 WRX models are without factory oil cooler).
Usually ships the next business day
