Olson's Gaskets...check the Cat parts source list "sticky" at the top of the posts.
Hi phill
I might have one nice shape but its used- 8B-8412,If it will fit, you can have it. Ken
Phill, I checked the gasket. it has never been used, just discolored
Ken, just to clarify I think the part number of gasket is 3B-8412, not 8B.