Close-up into the throttle-body bore of a removed aluminum intak…

Close-up of the throttle-body inlet flange on a removed cast aluminum intake manifold, looking into the round bore at the plenum's internal divider wall and runner openings. The mating face is stained with dark oil residue, a small threaded boss sits at right, and a battery with a red cable is visible in the background; date stamp 01/30/2007.

AI caption April 2010 · Photo 66 of 98