16850-ZX2-C00 Fuel Tube A - Overview. The 16850-ZX2-C00 Fuel Tube A is a critical component of the Honda marine engine's fuel system, designed to deliver fuel efficiently from the tank to the engine. This genuine OEM part supports the fuel system and ensures the reliable operation of your marine engine by maintaining consistent fuel flow under varying conditions. Its precision construction guarantees compatibility with existing hardware, maintaining the system's durability and performance.. Key