Clean new and dirty used fuel pressure regulators side by side o…

Two fuel pressure regulators side by side on a white board, each with a diamond-shaped two-bolt mounting flange, a domed crimped canister body and twin ports on the face. The left unit is clean gold zinc-plated, while the right one is dirty and rust-stained with a green paint mark across the flange.

AI caption January 2013 · Photo 162 of 409