Need help finding part number (plastic piece in wheel well)

For some reason my 2003 Tacoma is missing something in the front drivers wheel well.
Its obvious that something is supposed to go there.....but what?
I am assuming that there is some plastic shield that is supposed to screw into the frame to help keep stuff out of the engine area.
I would appreciate any help in trying to find a part number for the plastic part that I am missing so that I can try and acquire one.

 

Doesn’t appear to be one...
https://www.tacomaworld.com/threads/missing-a-section-of-my-wheel-fender-liner.580118/#post-19259680

 

i have some kind of a canister looking thing in that area (and i don't know what its purpose it for, maybe blinker fluid? lol)
might be different on the 2oo3 and it might not, idk