This is an original Stant Evrseal 1931-48 Chevy NOS Oil Filler Cap.  Nice condition, never been installed-see photos.  Original Stant box has some tears-see photos.   This is for 1 cap, box is included-see photos.  Box shows this fits all '31-48 Chevy passenger cars and '37-52 Chevy Pickups and Trucks, including COE.  For 216 engine with oil filler tube.  Please check my other auctions.