Radium Engineering AN-10 Male Bung, Aluminum
The 14-0274 aluminum fitting can be used as a weld-in or press-in fitting (specifically for the USDM Mitsubishi EVO 8-9 magnesium valve cover).
The press-in portion is 16.6mm diameter.
It replaces the PCV valve’s bushing so installation does NOT require valve cover removal. The fitting has extremely close tolerances to make a tight fit. NOTE: The JDM EVO 4-9 valve cover uses a different PCV valve and is NOT compatible.