Thank you for the welcome and your response. I realize that I will not be able to legally change the weight rating, but I'm still trying to figure out what my practical limit would be. The hitch from U-Haul mounts "under" the bumper to the subframe, whereas the Ford part attaches to the body AND the sub frame, so the hitch comes out through the "middle" of the bumper. I was trying to figure out if the additional attachment points are the thing that makes it rated higher. Here's the Ford part, and you're correct that it includes the body valance and other bits, even additional hardware. The video in this thread shows a pretty fussy installation, including having to cut the existing bumper with a Dremel wheel, so it is clearly a bit of a hack. Just trying to figure out if the Ford part would be more sturdy than the U-Haul one, if i chose to ignore the manufacturer 2500 lb towing limit (at my own risk).
2012-2015 Ford Explorer Trailer Hitch, 2\ Receiver BB5Z-19D520-AA
www.getoemparts.com