Hi all,

Need to some help please! Been doing some work on my project car and renewed the oil filter housing gasket for which I took off the top hose from the radiator. Now that I have tried to put it all back again, the coolant leaks from this connection. I can only see a plastic like washer (its not like a rubber O ring) so I'm not sure if there should be something else in there as well which I may have dropped by accident. The hose seats right to the end where it should and I can click the spring/wire clamp shut but it still leaks. Does anyone know what types of seals/O ring etc should be in there. Any help would be greatly appreciated. Its a N52 engine and the car is 125i 2009. Thanks in advance

Morning Aleem

Welcome to the Forum

The seal is normally the "O" ring that can be seen in the second picture inside the hose connector is the seal. Check www.realoem.com put the last 7 digits of your Vin into the search box it will call up your model then check the Engine section to see if you can buy new seals

Good Luck

Dave

5 minutes ago, Greydog said:

Morning Aleem

Welcome to the Forum

The seal is normally the "O" ring that can be seen in the second picture inside the hose connector is the seal. Check www.realoem.com put the last 7 digits of your Vin into the search box it will call up your model then check the Engine section to see if you can buy new seals

Good Luck

Dave

Hi Dave,

Many thanks for the reply. So if I understand it correctly that plastic ring seal is the only one needed here? If that is the case, then I don't understand why it leaks as the seal is fully in tact (not cracked or misshapen) and the hose connects how it should to the OFH and goes on as far it can. I have checked on realoem, but I don't think you can buy the seal on its own, it's likely to be part of the whole top hose.

The seal is normally the "O" ring inside the plastic hose end. I have not reused them so not sure how that would work if the "O" ring is OK then would think it should be OK maybe a smear of silicon sealant on the "O" ring may work ? Unless it is a cunning BMW plan to get us buying new hoses 

Dave

Double check the spring clamp - make sure it's fully seated and tight.

Will do thanks.