So I just went to O'Reilly's to get the valve cover gasket and they have two different numbers a felpro 17900 and a Fel-Pro VS13197C both of these caskets look identical right down to the color striping on them they are both made out of cork however one is $11 and one is almost 20 the 17900 says Marine I can't see spending $9 more if it's the same exact gasket anybody have any insight on this?
