The Honda Marine 16074-ZZ5-003 Vapor Separator O-Ring is a replacement sealing component used in the vapor separator assembly of compatible Honda Marine engines. It fits between mating surfaces to help create a secure seal and prevent fuel leakage around the connection. The O-ring supports proper sealing within the fuel system and helps maintain the vapor separator's intended operatio... https://www.wholetoolbox.com/honda-marine-16074-zz5-003-vapor-separator-o-ring/16074-ZZ5-003.html