Where to get replacement plastic for the left mirror (it's a wide truck!)

[UncaBuddha]

I was driving in the dark on a two lane highway and going across a bridge. The truck I met going the other way TOUCHED MIRRORS with me!!! That's never happened to me before (and I don't have the long tow mirrors).
The only damage was the clear plastic insert about 1/3 of the way from the bottom of the mirror. It appears to be part number 68402097AA on the carID.com website. Anyone know how this piece is removed and replaced? Anyone have a better website for this piece of plastic?
Thanks!

 

[PorBoy]

Can you take a photo of what exactly you are referring to please ?

 

[UncaBuddha]

Can you take a photo of what exactly you are referring to please ?

It's a 2020 Limited ED, btw. The clear plastic part got shattered. Small scratch below it. I don't know how the mirror and all the electronics within survived. I just pushed it back out to the locked position and it seems fine. (Surround cam and dimmer)

 

[Bill S]

I just replaced my left mirror, and I still have the old one. It is in good shape, it just has issues when it unfolds.
I can see how hard it is to get that out if you are interested.

 

[UncaBuddha]

I just replaced my left mirror, and I still have the old one. It is in good shape, it just has issues when it unfolds.
I can see how hard it is to get that out if you are interested.

THANKS!!! I can't see any screw holes or anything and the blow up on the carID site doesn't really show instructions. I can send them an email and ask if there are instructions with the item.
That's a great offer Bill S. !!!