16900-ZV4-A20 Fuel Joint Assembly - Overview. The 16900-ZV4-A20 Fuel Joint Assembly is a vital component of Honda marine engine fuel systems. This assembly serves as a secure connector within the fuel delivery system, ensuring reliable transfer of fuel from the tank to the engine. Designed to maintain the integrity of fuel flow, it supports engine performance and operational reliability. Featuring a robust construction and factory-specific dimensions, the Fuel Joint Assembly seamlessly integrate