17700-ZY9-E05 Fuel Tank Tube - Overview. The 17700-ZY9-E05 Fuel Tank Tube is a critical component in Honda marine engine systems, designed specifically to support the fuel delivery system. This fuel tank tube provides a reliable conduit between the fuel tank and the engine's fuel system, ensuring proper fuel flow essential for optimal engine performance. Engineered to match precise factory specifications, this tube integrates seamlessly with existing fuel system components, maintaining both perf