Kit contains all necessary O-rings and diaphragms to rebuild one fuel petcock.Fits:KAWASAKIEN450 85-90, EN500A 90-96, EX250 86-87, EX500 95-05, EX500A 87-93, KZ550D 82-83, KZ550M 83, KZ750F 83, KZ750N 82-83, VN700 85, VN750A 86-03, ZN700 84-85