Part the front wheel arch trim mounts to

[Fried_Chicken]

I'm having a hell of a time finding the plastic part the front wheel arch trim mounts to, b/c mine is and always has been destroyed.
The front wheel arch trim looks like this:
http://bmwfans.info/parts-catalog/E46-Sedan/USA/330i-M54/L-N/may2003/browse/vehicle_trim/wheelarch_trim/

Here are pictures of the part in question that I can't find:
https://i.postimg.cc/rKpQkVKt/IMG-4947.jpg (https://postimg.cc/rKpQkVKt)

https://i.postimg.cc/BXwNZrK7/IMG-4952.jpg (https://postimg.cc/BXwNZrK7)

Checking the catalog, I've gone through what I think is all the diagrams/schematics, but for the life of me I can't find the part numbers:
http://bmwfans.info/parts-catalog/E46-Sedan/USA/330i-M54/L-N/may2003/browse/vehicle_trim

Any help appreciated.

[Fried_Chicken]

Holy shit I think I found it when plugging that number into an internet search:
51717894367

Didn't match the part # exactly, but this came up and looks right.

And it looks discontinued. Wonderful.

[John in VA]

ECS Tuning shows it, but that doesn't mean it's still available - https://www.ecstuning.com/b-genuine-bmw-parts/mounting-bracket-left/51717894721/

BMW of Fairfax (VA) shows it priced at $39.25 - https://www.bmwoffairfaxparts.com/oem-parts/bmw-bracket-air-duct-left-519990-51717894721

[Fried_Chicken]

Goddamn. This part was so difficult to find from the diagrams. YES!