I did this mod too. Make sure you press the new mirror down so it is fully seated or it will bind in the housing, causing you to curse your bad luck until you realize you screwed up. Or so I've heard...

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Kirk
Las Vegas
2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo
2011 E90M3, 6-speed manual