Looking into twin carbon-stained bores of a cast aluminum intake…

Macro view straight down the twin bores of a cast aluminum dual-bore intake/throttle body flange, showing the divider wall between the two carbon-stained runners and the four threaded bolt holes in the mounting face. Flaking blue gasket sealer remains on the flange; date-stamped 01/30/2007.

AI caption April 2010 · Photo 63 of 98