it’s this pump
https://www.ebay.com/itm/133438896112
I thought it was the right pump for the zymatic but it looks like it’s 0.7 gpm vs 1.2 and has the wrong fittings.
Matched Pair of NEW SEAFLO 21-Series High Pressure Water Pumps -12v, 20PSI, ~0.7GPM for PicoBrew Zymatic / Z.