New aluminum water pump beside a corroded used water pump on con…

Two engine water pumps sitting side by side on a concrete step: a clean new cast-aluminum pump with a gold-plated hub flange and white plastic impeller on the left, and the corroded, grease-stained pump it replaces with a rusty flange and dark metal impeller on the right.

AI caption July 2007 · Photo 4508 of 5000