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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 > Missing Head Bolt / Torque Specs



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      01-18-2025, 09:21 AM   #1
elevation_35
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Missing Head Bolt / Torque Specs

Hello everyone,

Just recently I’ve discovered a missing bolt from my engine. It’s to the left of the oil filter and just above the Mickey Mouse flange. Am I right in thinking that the part number for this is 11317502048? What would be the torque specs for this bolt? I’ve attached pictures for reference.

Thank you very much everyone!
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      01-21-2025, 06:29 PM   #2
BRG_N54
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Timing chain guide access hole

Hello, yes, that is the correct part number. This is the access hole for removing the timing chain guides. I looked through the Bentley manual, in the timing chain section and did not see a torque spec for this fastener, I would estimate between 8-10 nm should be good enough. You could put a bit of blue Loctite to prevent this from happening again.
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      01-23-2025, 06:37 PM   #3
elevation_35
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Quote:
Originally Posted by BRG_N54 View Post
Hello, yes, that is the correct part number. This is the access hole for removing the timing chain guides. I looked through the Bentley manual, in the timing chain section and did not see a torque spec for this fastener, I would estimate between 8-10 nm should be good enough. You could put a bit of blue Loctite to prevent this from happening again.
Thank you so much, I have hand tightened it for now but will redo it with blue loctite just to be safe.
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