Bare cast-iron cylinder head deck with rocker pedestals beside a…

Dim close-up of a bare cast-iron cylinder head's valvetrain deck, showing rocker-arm fulcrum pedestals, valve spring seats and a raised casting number, with dabs of red paint on the surface. A compressed-gas cylinder with a green NON-FLAMMABLE GAS diamond label stands just behind it in the shop.

AI caption October 2010 · Photo 630 of 707