PCV conversion kits includes gaskets. PCV valve in kit is metal, replacement is plastic. 56 used '55 carb studs 88411S 4 pcs Spacer is made from 3/8" thick aluminum
This pcv valve works extremely well. I got rid of the draft tubes and have absolutely no smoke from the oil filler tube even when hot at idle, not like before. Also I was beginning to notice a small drip of oil from the rear seal which has disappeared. Fairly easy to install.