I just got error code P1151 code which indicates an issue with the Coolant Heat Storage (CHS) system. I actually bought a replacement tank well over 5 years ago when a dump truck decided to take a short cut turn over the front of my Prius. Amazingly, even though the original tank was deformed, it did not leak and I didn't replace it. I'm not sure if the error code is due to the CHS pump, tank, or sensor.. but I might just replace them all since I already have all the parts. Can someone help me ID the part# for the hose that connects to the bottom of the CHS tank (directly opposite the drain plug). I've circled the connection location in the attached photo. The other photo shows the bottom of my currently installed tank where one can see some damage to that hose - note that the hose is not leaking so it might be ok to just reuse.
For issues like this, go to amayama.com. Look up the appropriate Prius (NHW20L-AHEEBA USA, all gen 2 years, there appear to be two different parts list for the early ones and the later ones), then "Radiator and water outlet" (link is from the link for more recent years): https://www.amayama.com/en/genuine-catalogs/epc/toyota-usa/prius/NHW20L/8936/engine/1603 hover mouse over the part number in the diagram and it jumps to the relevant part(s).