The one that seals all the way around....Removed header gaskets and they are bad. New problem. The header port is oval and the ports on the engine are rectangle. Doh. Which port gasket should I use?
It doesn't matter as long as there is a mating surface between the header flange and cylinder head all the way around the port of sufficient width to seal it.ofcourse. But should I match the header port that is oval, or the port from engine that is rectangle. I’m guessing a rectangle to catch the corners?