Fan inside air intake stack?
Changing out the air filter on my 96 Dynasty today and noticed what looks like some kind of fan up inside of the vertical run of the air intake? I stuck my hand up inside to see if I could spin it but, no luck. Was hoping someone could shed a little light as how this operates. I have searched several sites with no luck. Any information would be greatly appreciated!
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2005 Allegro Bus 40QDP
Cummins ISL 400 (with Mods )
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