Yamaha - Tube,water - 6E0-44361-10-00Yamaha Water Tube Cooling System 6E0 44361 10 00 Overview The water tube is one of those simple parts that the whole cooling system depends on. It carries water from the pump up into the engine, and if its even slightly offbent, corroded, or not seated rightyoull see cooling issues pretty quickly. Ive run into cases where overheating traced back to nothing more than a damaged tube. Keeping this piece straight and sealed makes a big difference in how