whats in the valve cover on the other side generally there is a grommet and then the PCV valve in the cover while yours appears to simple be jammed into the valve cover...
I have never seen or heard of a flame arrestor on a vehicle except for a race vehicles air cleaner being made of flame resistant materials but could be wrong here
Here is an image of a simple PCV Valve OEM numbers could be as follows
25040145, 25040148, 25043355
