I was able to get gaskets for my 6K from the local Onan dealer, but that was over 12 years ago and a 4K might be a different story.
I also cleaned up and painted my exhaust manifold with VHT header paint on my old Onan. It lasted well.
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member