MUGEN Power 1.3kg HIGH PRESSURE RADIATOR CAP SMALL HEAD (Made in Japan) Universal Fit for most Honda and Acura MUGEN Power 1.3kg HIGH PRESSURE RADIATOR CAP (Made in Japan) Material: Aluminum Size: TOP 45mm (diam) BOTTOM 13mm (diam) (SMALL HEAD) Universal fits for most vehicles. 100% brand new in box, never been used or installed.