Radiator Cap

The Subaru cap, part number 45137FE002, is a genuine OEM component designed to maintain the integrity of your vehicle's cooling system. It is a direct replacement for previous Subaru part numbers 45137FE000 and 45137FE001. This cap is designed to fit a range of Subaru models equipped with 2.0L and 2.5L engines. Its applications include the WRX STI, Impreza, Forester (including turbo models), Baja, and Crosstrek. The cap is noted as being included with the water pipe, cross over pipe, and radiator assembly, indicating its integral role in the cooling system. As an official Subaru part, it ensures proper fitment and performance, helping to prevent coolant leaks and potential engine overheating caused by a failed expansion tank or cap. By maintaining the correct pressure within the cooling system, this cap contributes to optimal engine temperature regulation.