16900-ZV4-A22 Fuel Joint Assembly - Overview. The 16900-ZV4-A22 Fuel Joint Assembly is a vital component of the Honda marine engine fuel system. Serving as the essential connection point within the fuel delivery system, it ensures seamless fuel transfer and helps maintain consistent engine operation. Built to exact OEM standards, this Fuel Joint Assembly guarantees compatibility and durability within Honda marine engine systems. By integrating precisely with existing fuel lines and components, i