16734-ZY9-010 Fuel Tube Stay - Overview. The 16734-ZY9-010 Fuel Tube Stay is an essential mounting bracket that secures the fuel tube within Honda marine engine systems. Its primary role is to prevent movement or damage to the fuel tube, ensuring consistent and reliable fuel delivery which is critical to engine performance. This component supports the fuel system, playing a vital part in maintaining the engine's operation reliability and safety. Designed to seamlessly integrate with existing Hon