Hose Identification Help

[venerated]

Any help identifying these two hoses? I have searched RealOEM and did extensive Googling and came up empty.



Thanks!

[ForcedFirebird]

Did you look at the heater diagrams?

https://www.realoem.com/bmw/enUS/sho...diagId=64_0135

[venerated]

Did you look at the heater diagrams?

https://www.realoem.com/bmw/enUS/sho...diagId=64_0135

Yep. Those are the hoses kind of underneath the hoses I am asking about.

[ForcedFirebird]

#9 and #11 in the diagram in the link is the two hoses you have circled in red.

[SethB]

ForcedFireBird, I think that's almost right. The small hose coming off the T (#12 in your link) is #11 . It runs from that tee down to the bypass valve, #8 in the diagram. However, the larger hose is actually #13 from this diagram:

http://www.realoem.com/bmw/enUS/show...diagId=11_1167

When that heater bypass system was added, they cut #13 to insert the T.

So venerated, to replace that hose, you'll need #13 in the link. You can either cut it and reinsert the T, or else delete the heater bypass. The heater bypass came as a result of a lawsuit when a heater core failed and dumped hot coolant on a passenger. In my mind, it's just another set of hoses and valves to fail. If you replace #12 and #13 in the link, you can just leave out the bypass valve, the T, and the small hose that runs between them.

[SethB]

Here's another thread with some really helpful pics:

https://www.r3vlimited.com/board/showthread.php?t=295039

[venerated]

Thanks both of you! Now I understand what is going on and why I couldn't figure those out. :D