I noticed that the one I just put on my Jeep Liberty from Blue Ox was a Bargman brand name. You may be able to find it online using that name.
2004 Tiffin Allegro 27.5 ft. P32 18,000 lb GVW. 8.1 liter. Workhorse chassis built May 2002. 21,000 miles. 2012 Jeep Liberty Toad. RVi2 brake unit.