Engine front accessory pulleys and belt tensioner with the serpe…

Tight close-up of the front accessory drive on an engine with the serpentine belt removed, showing the alternator pulley, smooth idler pulleys, the spring-loaded belt tensioner and a grooved crank or water-pump pulley. The aluminum housings and cast timing cover are dirty with age but the pulley grooves are clean.

AI caption April 2005 · Photo 54 of 851