Yamaha - Tube,water - 6L2-44361-10-00Yamaha Water Tube Cooling System Component 6L2 44361 10 00 Overview The water tube is one of those parts that quietly does its jobuntil it doesnt. It carries cooling water from the pump up to the powerhead, so any issue here can throw off the whole system. Ive seen motors overheat just because the tube was slightly bent or not sealing correctly after install. Keeping this piece in good condition makes sure your engine stays cool and runs the way it