Which hoses are these (picture attached) - leaking
 

Hi Everyone:

I have a slow leak under my car -- looks like the drips are coming where the oil drain bolt trap door is. Probably the fluid is slowly collecting there and dripping down. It looks like some oily fluid -- not sure if steering or transmission or motor oil. Anyhow, I looked under my hood on the driver side, right beside the motor and low down. I saw these 2 hoses which appear to be leaking. It seems to be leaking where the hoses go into the metal block (since there doesn't seem to be any oil leaking down from where the rubber hose becomes the metal line.

Please see the attached pictures. I tried to look on the parts diagram, and I coudln't see any line resembling this in the power steering hydraulic section...

Could somebody please help me identify these hoses? Thank-you

You should tell us what model (engine) you have first.

Sorry, it is a 2003 3.0i. M54 engine I believe.

Thank-you

Trans oil cooler/heat exchanger lines.

Thank-you sir. With your information I found them at:

RealOEM.com * BMW E53 X5 3.0i Oil-cooler pipe/heat exchanger

As it appears to be leaking from the transmission side, I'm hoping I can just replace the o-rings inside.