If you're running a Late 1999-2003 truck with the 7.3 L Powerstroke, the standard upper radiator hose design is far from ideal — it snakes right through the serpentine-belt circuit, forcing you to drain coolant and remove the hose just to change the belt. The Riffraff Diesel Coolant Silicone Radiator Hose (Around the Belt) – Upper 99-03 re-routes that hose around the belt instead. Constructed from heavy-duty silicone, this hose gives you cleaner routing, easier belt service, and better durability under heat and vibration. It's especially appealing if you tow heavy, use your truck hard, or simply want to convert your cooling system to a trouble-free and more aesthetically pleasing layout.

Check it out! https://www.riffraffdiesel.com/coolant-silicone-radiator-hose-around-the-belt-upper-99-03/

*Note - Will only work on single alternator trucks. Will NOT work if you have the dual alternator system. 

OEM Cross Reference - F81Z-8260-CA