Spans the front, flywheel end of the engine. It aids in sealing the engine compartment from road dust. Hot air exiting the Dog House Oil Cooler is pushed out of the engine compartment through a port in the Bell Housing Cover. The two-piece air duct bolts to the front of the fan shroud. These parts are available in black or chrome to fit European Style Dog House Shrouds. They are not compatible with Brazilian Low Profile Fan Shrouds.