Looking into the inlet bore of a removed aluminum intake manifold

Close-up looking straight down the throat of a removed cast aluminum intake manifold, showing the throttle-body inlet bore with its center divider and dark plenum interior. The casting is grubby and lightly oxidized with a threaded port on the right flange, photographed on a garage floor with a 01/30/2007 date stamp.

AI caption April 2010 · Photo 67 of 98