Need help finding replacement part

Does anybody know the name of this part? Trying to find it online but don't see it on any parts diagrams, knowing the correct part name might help. Really hoping I don't need a new mirror.

 

Try this
https://parts.olathetoyota.com/auto...l-v6-gas-engine/body-cat/outside-mirrors-scat

 

is the mirror cover the top and bottom piece?

 

Hard to tell. Lets see if @mesojdm can help. I am pretty sure he has had the mirrors apart.

 

Finding individual pieces of the mirror assembly seems to be tough. If you happen to find the part # of the cover right next to it (with the three little ridges) while you're searching, it would be sweet if you could let me know. Sorry I can't offer more info on this.