[Jonas4sberg]

I plan on replacing my leaky radiator, I'm also going to do my upper and lower radiator hoses will I'm at it. If I'm not mistaken there's two more hoses that go into the radiator though and I'm having some trouble finding proper part numbers. I know there's one from the radiator to the auto trans cool. I'm pretty sure it's part number 17117524710, however every website says that's the wrong part number for a 2011 335i auto and realOEM doesn't list the part number anywhere I can find. Can someone also help me figure out what the last hose is that connects to the to the lower passenger corner of the radiator, realOEM doesn't seem to list the part number for that hose as well.

[e91Owner]

Realoem lists the two trans cooler lines under the radiator section. These are for trans fluid, not for coolant. Not sure if that's what you are referring to. There are a lot of hoses, so narrowing it down to which small one is a little tough.

https://www.realoem.com/bmw/enUS/par...BMW-335i&mg=17

That's for a US market E90. The part number you listed is a superseded part of a EUR model.

[Jonas4sberg]

The trans cooler is a water to water plate cooler if im not mistaken. It uses the engine coolant to cool the trans fluid which is why it doesnt look like a mini radiator. The coolant flows from the cold side of the trans to trans cooler and then into the main plastic return line. I cant find this coolant hose on realOEM even though its shown in diagrams. The hose im referring to is number 14 on this diagram and it has no part number listed...

https://www.realoem.com/bmw/enUS/sho...diagId=17_0377

Lastly, the last thing im talking about is the 4th hose to the radiator. If you look you can see only four hoses that route to the radiator in the above diagram. The one I have no clue about is number 10, but once again it has no part number or useful information listed with it.

TLDR: Wtf are the part numbers for 10 and 14 on the linked diagram

[e91Owner]

The long lines in the real OEM diagram carry transmission fluid to a heat exchanger, which has two coolant ports. Not sure if we were talking about the same thing.

This diagram has the numbers you are looking for, but I believe it's 10 and 12, rather than 14.

https://www.realoem.com/bmw/enUS/sho...77#17117541143

[Jonas4sberg]

Those are exactly what Im looking for, thank you!

Edit: I believe Ive had so much trouble because my car was produced in 04 of 2010 even though its a 2011, so when I put in 2011 on car sites it thinks it a much later iteration.