Both of my c320 airboxes are numbered A 112 094 00 04. The engine cover is seperate
112 090 15 01, I believe is an SLK airbox number that uses the same size filters as the Crossfire does now. The front engine cover portion is included, the entire assy is one piece. When I had this airbox on my car, I don't recall it rubbing.
James
SLK320: