65124127873 is the part number on my DSP amp. I just took it out today (man is it HOT in the garage...100* and climbing).

Works perfectly.

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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