Spurious vs OEM?

[BOD320D]

I'm looking for a topaz blue passenger side wing for a face-lift E46 touring.
They pop up on done deal regularly so finding one isn't a problem.
What I need to know is if there is a way to tell the difference between a genuine BMW wing and a spurious one? Maybe a BMW stamp or a part number somewhere on it?

[John_D]

The inside will be a dead giveaway assuming it's a used part. The OE part will have under seal in spots and will be a beige kinda colour. Spurious will most likely be black and lacking any treatment inside. There is also a stamped symbol on the OE wings near the front top bolt(well at least on the preface saloon there is).

The OE part will generally be of much higher quality.

[John_D]

Here's the symbols on mine, both are used genuine replacements:



An S on drivers side, D on passenger side.

Hope that helps.

[BOD320D]

Thanks very much John, that's very helpful