Since I am going stir crazy not riding, I seem to be buying things left and right. I found this while looking at parts fiche for replacement fairing bolts and I just had to have it!
Part number and name: 71-77222-MBG-000 : PLUG, RR. COWL (Usually item 18 on actual fiche for the rear cowl) $3.55 @ Partszilla
Does that prevent the cowl from rubbing the fairing?
Yes, it prevents it by not letting the cowl be installed. At least on the 5th gen, the cowl slides in that slot and then gets held in place by the Frankenbolts.
Guess I'm one of the lucky ones, my bike came with that plug.
If so, then yes! I picked up two of those as well - $2.83 each. The PO of my bike was obviously a douchebag that didn't deserve her. He kept none of the little things and didn't take care of the big things. Luckily he didn't own her long enough to cause any damage!
Does that prevent the cowl from rubbing the fairing?
Wera beat me to it, but no. This is just so that you don't have an ugly slotted hole visible when the cowl is off the bike. And I never have my cowl on.