16861-ZV7-900 Fuel Tube B - Overview. The 16861-ZV7-900 Fuel Tube B is a crucial component within the fuel system of Honda marine engine systems. This genuine Honda fuel tube ensures efficient and reliable transfer of fuel from the fuel tank to the engine, supporting consistent engine performance and operation. Engineered to meet factory standards, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Fuel Tube B is a high-quality fue