Completely rebuilt factory KAWASAKI H1/H2/KH500 vacuum operated original petcock. Original good OEM core is completely stripped, cooked, flushed and completely rebuilt to as-new specs with GENUINE KAWASAKI PARTS as follows: NEW DIAPHRAGM, new bowl gasket, new bung nut gasket, new diaphragm air and fuel seals, new fuel lever seal, back-side of lever polished, new pair sock filters. assembled then both pressure and vacuum tested. looks virtually new, functions as new, 30-day warranty. do NOT use ethanol based fuel with these petcocks. the seals and o-rings cannot stand a steady diet of it.