is it "dangerous" if i dont replace this??

[fortress]

I lost one of this

93604-08071-00

from the Powervalve socket


I saw that some oil are coming from this little hole.. Do i really need to replace the one i did lost?? IT dont seem to do anything more than help puting the valve cover in place

Why they did make it removable ?!?!? money??

 

[modsrx]

can't be very important they didnt put them on 98-99 ..make sure it didnt fall into the cylinder

 

[fortress]

hum sound goods thx