04802-ZV4-A20 Fuel Joint Kit - Overview. The 04802-ZV4-A20 Fuel Joint Kit is an essential component for Honda marine engine systems, specifically designed to connect the fuel line to the engine, ensuring a secure and leak-free fuel delivery system. This critical part supports the fuel system and helps maintain the smooth operation and reliability of your marine engine. Developed to OEM specifications, it integrates seamlessly with existing parts, maintaining optimal performance and durability..