What are these parts I found on the floor?

[hoodscoops]

Does anyone know if these belongs on Dark Horse? I found them on the floor as next to where I park. Next day I started noticing some screeching noise at slow speeds. Kind of like lownbrak pads are grinding on rotors all the time. Happens when Im moving but not when Im braking. Im thinking my ebrakes are engaged.

The lug nut says YWF 1011

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[gtstang462002]

Do not appear to be anything that belong to a Mustang. Ford doesn't use shiney hardware like that. The O-ring looks like something for hydraulics or plumbing related.

 

[D/\rK•650]

I agree this does not look like anything that might fall off a Mustang. And to what your symptoms are these parts most likely would not be something that would cause it.

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