This part somehow came off my McLaren 540. Any ideas where I order this part from and what part it actually is. Just a small carbon part on the top of the wing. I've included two photos, one with and the side where it's missing
The passenger / left door part number is 13A5063CP. It's palladium painted plastic usually, not carbon.
PS - has you car had paint on the front wings? for corrosion maybe? They remove them to paint and then don't clean off the old bonding and re-bond when they refit.