This ski happend over heat last week.
This hose fitting inner diameter is too small as wrong one was fitted maybe from factory.
Please check and comparing above pic (this ski) and below pic(from other ski), see how inner diameter is diffarent.
This hose fitting pick up hose from cylinder head cooling line, in short cooling water flow was chokeed by this small inner diameter hose fitting. So this is a cause of problem over heat.