Mishimoto 99-03 Ford F-250 7.3L Coolant Hose Upper Reroute BKWhen you think of changing your serpentine belt, do you also think of spending hours draining, refilling, and bleeding your cooling system? If you do, Im guessing you own a 1999 2001 Ford 7. 3L Powerstroke. For optimal coolant flow, Ford snaked the upper radiator hose of the 7. 3L through the serpentine belt, making it impossible to change the belt without draining and refilling the cooling system. Luckily, Mishimoto has a solution to make draining