If you're talking about that black piece on the driver side wiper, then I asked that same question years ago when i got my X. It is supposed to be standard and not an aftermarket add on.

The more knowledgeable members can tell you what that is for but from the answers I got when I asked that question...its normal!

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'04 BMW X5 3.0i TitanSilber Metallic
'03 Lexus GX470 Black Onyx
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'03 BMW X5 3.0i Black Sapphire SOLD