Yamaha - Fuel Hose Assembly Fuel Delivery System 6EY-2450B-10-00. Overview. Fuel hoses are one of those things you don't think about until they start giving you trouble. After rigging plenty of Yamaha setups, I've seen how a solid hose assembly makes a big difference in keeping fuel flow clean and consistent. This one is built to handle real-world use-heat, vibration, and long days on the water. When everything's hooked up right, it's the kind of part you install once and trust every time you tu