bought one from eBay for Driver Side-Front, paid $15 CAD, installed in 10 minutes, perfect fit - don't have the original link but there were dozens of options....

https://www.ebay.ca/itm/1pcs-Inner-D...72.m2749.l2649

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E70 - 3.0si & F10 - 535ix
Previous Cars:
E34 - 525i, E39 - 530i, E60 - 530i