I looking for a 6F2080  it is the top gasket that goes between the block and the intake/water jacket top to which everything bolts too. Caterpillar shows it for purchase but has no delivery date. I bought one from them in 2019 but I've been sticking out florin tractor does not have any or dose, American Crain.  it's the Bigger horizontal pony with the water pump and the 3.125 bore used only on the D318 and D4600.  must be willing to ship to Canada as the border is still closed. 

Hi Mog, try Olson’s gaskets.  That’s where I had to get mine for my 9U starting engine this winter. 

good luck. 

Bruce P.  

I have been talking with him but he said he didn't have a pattern. it's not a problem to make a pattern just cross broader shipping really sucks. they have been really nice and super helpful. i check back with him. thanks

I’ve got another complete engine, I could pop the top and see if the gasket is good enough to send them for a pattern.