Had a crack in the overflow tank 1997 Beaver Monteray while on the road I-40 Eastbound, got into Holbrook,AZ. Called Monaco -no help, CAT did not install it.
So climbed under the bed and got the number molded on the tank,
F6HZ 8A080 B
Ford uses it for there F85 series trucks $152.00 new therostat 38.50 and back on the road.
Full time rv'er
1997 Beaver Monteray 36'