Close-up of a serpentine belt routed over rusty grooved pulleys…

Close-up inside an engine bay showing a ribbed serpentine belt wrapped around several pulleys, including a grooved pulley with surface rust and a finned idler or tensioner pulley with a rusty center bolt. The belt's glossy back side and worn rib faces are visible up close.

AI caption March 2006 · Photo 21 of 337