SBC 12AN Valve Cover Adapter Fittings for Push-In Grommet (Pair) 34-00032 | Note: Grommets not included. | These fittings are designed to firmly push in to your valve cover grommets and adapt to 12AN. This allows for easy adapting to a standard AN style line for a cleaner and more aesthetic way of plumbing / routing to a catch can or other PCV device. | These are made to replace Mr. Gasket Part # 2054 or similar. Made to work with a 1.22" diameter hole in a valve cover. | These are Made in the USA from 6061 aluminum.