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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Oil leak/ part identified



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      10-19-2019, 02:47 PM   #1
DTOAST3
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Oil leak/ part identified

Hey guys, I have a small oil leak that just started recently. Itís not a lot but itís decent amount. I took this picture from under the car, passenger side looking up. Can anyone identify what that bolt is and what part itís bolting down? I am not sure what the piece circled is. Thanks!
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      10-20-2019, 09:38 AM   #2
mweisdorfer
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Originally Posted by DTOAST3 View Post
Hey guys, I have a small oil leak that just started recently. It’s not a lot but it’s decent amount. I took this picture from under the car, passenger side looking up. Can anyone identify what that bolt is and what part it’s bolting down? I am not sure what the piece circled is. Thanks!
That's just a bolt that holds the downpipe bracket. I suspect your leak is higher. Look at the backside of the valve cover. You will need a telescopic mirror with an LED light.
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      10-22-2019, 11:43 PM   #3
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Rear turbo inlet above could be other source of leakage...
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      10-23-2019, 08:50 AM   #4
DTOAST3
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Sweet. Thanks for the advice.
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