Close-up of oily cylinder head gasket surface with studs and bla…

Extreme close-up of the front end of a cylinder head with the valve cover off, showing the oiled machined boss and bore, two threaded studs, and the crosshatched gasket rail smeared with black RTV sealant. A valve spring and rocker are visible at the upper left edge of the head.

AI caption January 2011 · Photo 371 of 373