That one from Advance Auto Parts looks nice, but the nearest shop is 66 miles away in College Station -- sucks to have to go that far for a brush costing a couple of $
In Europe, Dr. OK Wack Chemie are one of the main suppliers to BMW. The original P21S (in the USA) formulations were Wacks. So it might well be Wacks OE products which are sold via the BMW network in America.
