Tech Training - Subaru Radiator Cap
The provided Mishimoto radiator cap should replace the stock cap located on the expansion tank. The OEM cap attached to the OEM radiator should be installed on the Mishimoto Performance Aluminum Radiator.
The Mishimoto radiator cap is a two-way valve, while the stock radiator cap is a single valve. Due to the difference in construction, the Mishimoto cap cannot be used on the radiator. If the Mishimoto cap is fit onto the radiator, overheating may occur.
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