Yamaha Water Pipe 2 YF1-54717-24-40. Overview. The Yamaha YF1-54717-24-40 Water Pipe 2 is a genuine original equipment manufacturer component designed to help direct water flow within the engine cooling system. This pipe assists in transferring cooling water between components, helping maintain proper circulation and stable engine operating temperatures.. Efficient water movement is essential for protecting the engine from overheating and ensuring consistent performance. Over time, water pipes m