Yamaha Water Pipe YF1-52617-28-80. Overview. The Yamaha YF1-52617-28-80 Water Pipe is a genuine original equipment manufacturer component designed to direct and transfer cooling water through the engine's cooling system. This pipe plays a vital role in maintaining proper water circulation, helping regulate engine temperature and support consistent engine performance.. Efficient water flow is essential for preventing overheating and ensuring reliable operation. Over time, water pipes may become c