16968-ZY3-010 Fuel Tube Joint - Overview. The 16968-ZY3-010 Fuel Tube Joint is a crucial connector within the fuel system of Honda marine engine systems. This essential component serves as a junction point for fuel lines, ensuring proper fuel flow and delivery to keep your marine engine running efficiently and reliably. Precision-engineered to maintain factory specifications and designed for Honda engines, it ensures seamless integration with existing parts, maintaining optimal performance and d