Yamaha - Tube, water - 6AW-44361-00-00Yamaha Water Tube Cooling System Water Transfer 6AW 44361 00 00 Overview This is one of those parts you dont see unless youre deep into the motor, but its critical to keeping things cool. The water tube is what carries cooling water from the lower unit up into the powerhead, and if that flow gets interrupted, youll know it fast. When its straight and sealed properly, everything works like it should. But if its bent, blocked, or not seated right, youre