Where did this part come from?

[wwtucson]

I found this part in my driveway under my 2023 JL Rubicon 3.0L turbo Diesel. Does anyone have a clue where it could have come from?
I just installed a Insane Diesel bypass filter but this part has nothing to do with that.
Looks like the stains are something you see around exhaust parts. Thanks in advance.

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[YGBSM392]

I'm at a loss. Too short to be a brake pin and no keyhole. I don't know of any solid flanged clutch bearings except on small equipment like fishing reels. I'll bet your tire picked it up in the tread. Looks small enough to have gotten in there.