For the Tow package - NOTHING other than the Original BMW part!!!

I just reinstalled one on my 4.8iS, and beleive me, it is a substantial set of parts that go into your car, not just a U-Haul weld on/screw onto "frame" set...

The job usually goes for about $1000 total at a dealer, for parts and labor, about $400-500 for a part and about the same for the labor... there are DIY on this website... it comes with the trailer module, that is prewired on the car already...

Do not take a short cut on this, unless you want it for the looks only...