I just replaced my valve cover gaskets and one of the cylinder head plugs has disappeared into my garage's black hole (the place where all nuts and bolts that you drop on the floor go when you look for them and can't find them).
The plug is the aluminum half moon shaped disk (two per head) that fits into the camshaft bores machined into the rear of each cylinder head (firewall side). Attached is the subaruparts.com drawing.
The part I need is:
09 $4.61 Plug-cylinder head 19-
$4.61 Plug-cylinder head -18
Let me know if you have one - each motor comes with four.
Thanks for looking