Stop in for a cup of coffee

Oil Filler Breather Caps w/ PCV Mount - Paintable - 64-69 Mopar Oil Filler Caps | AMD 337-1064-1

iD is said to be 1.5 inches, and the outer diameter of the tube on the valve cover is just above 1.5 inches. So, someone has been sleeping in the classroom and not paid attention to the details.

Bill