Real oem has two parts one up to 10/2003 and one after

01 Pressure regulating valve 1 10/2003 11617501566 $57.63
01 Pressure regulating valve 1 10/2003 11617533400 $65.78

https://www.realoem.com/bmw/enUS/sho...94#11157532628


I think I found out why

Mine is cold climate version
On pelican parts I saw this that also has a crack that seems like a jacket