Newbie here from Mississippi. This looks like a great place to ask and hopefully find answers. 39' Excursion by Fleetwood and loving it.
Couldn't find a part number for the air filter so I called Spartan & sure enough they had it along with the oil filter. The guys at Camping World had no idea and said I would have to leave it there for several days until they could run down the parts. Told the service manager I would bring in the filters and he said it would only take several hours.
The only reason I'm having it serviced is peace of mind. We are the second owners & couldn't find any maintenance records.
WE purchased it from a large RV dealer that I will never step on their property to spend any of my money again.