Missing Wiper mount grommet

Hi guys, Longtime lurker here, but devoted follower to priuschat's maintnence recommendations.

I was removing the windshield wiper and cowl to clean the EGR, and when I was reassembling I found that the wiper mount grommet thing has slipped into the Void. I can't find that thing anywhere, i dropped the plastic underliner, and everything.

the issue is, I also can't find the part on any diagram or order sheet as well. Salvage yards are no luck. So I turn to the experts here for help: what is that stupid part number??

See pics for reference... As I documented the EGR cleaning I unknowingly documented the missing grommet.

 

Yea, that's the grommet on the rear wiper in the McGeorge link. it may be on the linkage, but its unclear from the diagram.

I'm now having doubts that it's labeled a 'grommet' at all, as I feel like I've looked at every possible part labeled 'grommet' on the car with no luck.

i did pull the underpanel off, and was disappointed that no piece fell out :-/

Since the EGR cleaning, I pulled the cowl to bleed the coolant from the top hose and poked around trying to find it without success. I'm prepping for a strut replacement, so i'll have another opportunity to look around.

I think you may be right, I have a decent toyota dealer (Camelback Toyota) that may be able to help with some photos. I paid 25 bucks for a PCV valve there - at this point, I would resign to paying 15-20 bucks for a rubber stopper. I'm hearing some new squeaks on bumps in the cabin under the dash and I can't help but suspect that its the linkage moving around in there.