Not for the genset. The Onan 7500/8000 has it's air intake on the bottom at the front, parallel to the surface of the road. It is physically part of the genset, not a separate component mounted elsewhere on the chassis.
Former owner of 2004 American Tradition and several other RVs
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC