DAYCO invented the serpentine belt for the Hi-Po FORD Mustang V8 - and the energy-saving properties of the serpentine design were soon being copied by automakers around the world. World ! In addition to energy savings, DAYCO's ribbed contact area and "gear" design provide cooler operating temperatures, less noise and longer belt life. I have used DAYCO 5060980 on 2 different 4.6L FORD vehicles, over 140,000 miles with no sign of wear or damage to any of the belts. Here, in the hot Arizonaβ¦