GL Class (X166) 2013-2015 after facelift became GLS (X166)

GL450 Cylinder Head Front Cover

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Old 04-17-2022, 10:32 PM
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GL450 Cylinder Head Front Cover

I was told a leak was probably the cylinder head front cover. I thought they meant the valve cover which looked like a lot of work. After looking further, it doesn't look like too big of a job. Couple questions:

1. I don't see a gasket on the drawings, is it just a sealer. What sealer is it, I'd like to order it online.
2. Sounds like I should also replace the bolts, P/N?
3. I cleaned everything pretty good and it looks like the oil might be coming from around the Cam Magnet. Is that a possibility? What is the seal behind that?
Old 04-18-2022, 09:58 AM
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2017 GLE350 4MATIC
Originally Posted by Columbus430
I was told a leak was probably the cylinder head front cover. I thought they meant the valve cover which looked like a lot of work. After looking further, it doesn't look like too big of a job. Couple questions:

1. I don't see a gasket on the drawings, is it just a sealer. What sealer is it, I'd like to order it online.
2. Sounds like I should also replace the bolts, P/N?
3. I cleaned everything pretty good and it looks like the oil might be coming from around the Cam Magnet. Is that a possibility? What is the seal behind that?
1. Sealant. Buy from the dealer.

2. Yes replace the bolts, they are aluminum single use very low torque spec. Buy from the dealer.

3. Possible. Try messaging @crconsulting as he recently replaced sensors.

Last edited by chassis; 04-18-2022 at 10:28 AM.
Old 04-18-2022, 11:25 PM
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The dealer isn't very close to me so I would like to order the parts online. I can't find PNs on FCP Euro, any help would be appreciated.
Old 04-19-2022, 01:18 PM
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Is there a place I can find torque specs?
Old 04-19-2022, 04:41 PM
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2020 GLC300 -2013 Sl550 - 1997 SL600
Originally Posted by Columbus430
Is there a place I can find torque specs?
Attached is the WIS R&R procedure and torque values for M273 engine (2010) for both cover and solenoids


Good Luck.
Attached Files
File Type: pdf
install solenoid camshaft.pdf (136.6 KB, 76 views)

Last edited by crconsulting; 04-19-2022 at 05:10 PM.
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