RARE GENUINE JDM SPOON TYPE F RADIATOR CAP This high quality radiator cap functions to increase the pressure inside the radiator so that even if the water temperature exceeds 100 degree C, boiling will be avoided. Stock Honda radiator caps are rated at 1.1BAR. The Spoon radiator cap increases the pressure to 1.35BAR, thereby improving cooling performance. This Type F radiator is designed to fit 90-93 Acura Integra 91-05 Acura NSX 88-91 Honda Civic 88-91 Honda CRX 92-96 Honda Prelude +Other cars with equivalent fitment. Manufactured under strict QC from Spoon Sports of Japan Notice the glossy look and the made in Japan engraved on the top. You are buying a quality product!