Yamaha - Fuel Pipe Joint Assembly 2 Fuel System 6E5-24305-06-00. Overview. Fuel system issues can be tricky, and sometimes it comes down to something simple like a connection point. This joint is what keeps fuel moving cleanly between components without leaks or air getting into the line. I've seen engines run rough just because of a loose or worn joint causing tiny air leaks. Getting a solid, tight connection here helps keep the motor running smooth and predictable.. Key Features. Secure Fuel Line Connection - Ensures tight, leak-free fuel transfer between system components.. Air Leak Prevention - Helps maintain proper fuel pressure by keeping air out of the system.. Durable Construction - Built to handle vibration, fuel exposure, and marine conditions.. OEM Fitment Design - Matches original specifications for proper alignment and easy installation.. Engine & Boat Compatibility. Designed for Yamaha 2-stroke outboard engines with standard fuel delivery systems. Commonly used on smaller