on my 95 gsr head i noticed that the little dowel thing (lol) located in the middle of the head was missing. anyone know its purpose? i know i need it but clueless to what it actually does. i searched and found nothing. thanks guys

 

ttt i need to knowwwww what this is.

 

they are $1 from honda. i remember that it's important and most likely there to keep the caps from walking since that one specifically has oil. buy a new one and be good to go. get the little o ring too.