Grohe Soap Down Pipe

It doesn't appear that Grohe sells all replacement parts for their soap pumps particularly:
https://www.faucetshark.com/Grohe-40535000-Parts-s/7062.htm

Mine broke in the middle of the plastic and I used measurements from the broken part to create a replacement to this "down pipe" both threaded on the inside for attachment to the soap reservoir and threaded on the outside (compatible with original parts) for the nut that holds the pump in place on your countertop.