Stumbled on something I have been looking for since buying the coach. We are in Perry Ga for a couple nights and was talking to a fellow camper who drives a super class C on a Freightliner chassie and the subject of air filters came up. He informed me of haveing a new K&N for his Mercedes power plant and was thrilled with the results. Said he found and ordered directly from K&N and to check the site for a cross of my Baldwin part # and to my great suprise there was a direct replacement. The K&N part # is( 38-2008S ) the price online direct is $244.00 and change which is steep but I'm about to buy my third air filter since owning the bus at about 65-70 dollars a pop. The new filter is completly serviceable and you no longer use oil it is a dry filter. Have one on order check it out yourself at knfilters.com