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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 04-03-2017, 05:57 AM
528iAut 528iAut is offline
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Location: Moraira, Spain
Join Date: May 2016
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Mein Auto: 1996 528i
Help identifying engine parts

I have a small leak, looks like its coming from around the area on the photo, but what are these parts/connections/sensors or whatever called?
Also, on the right side of the engine, underneath are two long hoses, they run to the back of the engine, I also see oil on these.
All in all its not much of a leak but I am missing the whole engine plastic cover underneath so I have a piece of cardboard under the engine when its parked in the garage.
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E39 528i Steptronic 1996, Comfort seats, Rear sunshade, Focal amplifier and front speakers, Oxford Green.
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Old 04-03-2017, 10:32 AM
monkeyman_69 monkeyman_69 is offline
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Location: San Jose, CA
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Mein Auto: F10 535D X 2015
You don't give us much to work from.
I don't know if I see a leak or leftover grime. As for what this is, and going off memory, see attached.
EM = exhaust manifold.
ACH = cold air conditioning line
ACC = AC compressor
LRH = lower radiator hose
VC = valve cover
FAN = fan.
SR = steering rack (just below EM)
EVAP = goes to the condenser / dryer
The black bulbous thing w/ the big circle around it sweats when you run the AC.
Assuming the fluid is not running and dripping elsewhere, from this area you have power steering fluid, rad fluid, and engine oil as possibilities.
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