I've done it on both front doors. It's not that bad of a job, but you need to get it in very, very tight.

It just is a "U" groove that slides over a thin sheetmetal protrusion.

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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