Bare aluminum four-chamber cylinder head standing on pavement, v…

Bare aluminum cylinder head standing upright on sunlit asphalt, combustion-chamber side facing the camera, showing four chambers with installed intake and exhaust valves and spark-plug holes. The as-cast exterior and machined deck surface are clean and unpainted, apparently a new or freshly rebuilt replacement head.

AI caption June 2003 · Photo 100 of 2456