Went to start the car yesterday after re-installation of the IM and everything. I stripped the bejesus out of this non-replaceable part and it is leaking nicely. Yes I am quite the mechanic… :-\
https://i.imgur.com/gVLA9xU.jpg
This is the drivers bank HPFP Fuel Pressure Release valve. I can not find a PN associated with this part as a replacement. It appears these are only sold with the HPFP and they do not cross mix with the 4.2 or the 2.0t which offer these as spares.
By chance anyone have an old 5.2 pump from scrap they can pull this part from?
Edit: Same exact “visually” part as this fellow here:
https://forums.vwvortex.com/showthread.php?7154947-Brass-Fitting-on-Fuel-Pump