Oil pump Subaru WRX STi EJ20 EJ25C 12mm OEM

When you start installing modifications to your vehicle, you may encounter oiling issues. The new, original Subaru Spec C part will help you avoid them. This is a good upgrade for EJ20 and EJ25 engines. The 12mm diameter oil pump flows 20% more than a standard 10mm diameter pump, also maintaining higher pressure at higher speeds. 10-11mm diameter oil pumps can only be used on engines without modifications. Recommended Spec C oil pump for all turbocharged WRX, STI, LGT and FXT models that generate more than 350 HP. An absolute must if rpm exceeds 7000.