R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

R-Class OM642 Engine cover Peg/Mount

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Old Jun 13, 2025 | 02:33 PM
  #1  
SantaClaw's Avatar
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2012 Mercedes R-Class R350 CDI 265HP Long
R-Class OM642 Engine cover Peg/Mount

So, I am looking for the part # or part I need to replace one of the engine cover mounts for my R-Class.
I asked the local dealer, and they couldn't find it in the parts diagram..

Without it, the engine cover had rubbed a hole in the inlet manifold...


Missing
Missing
Not Missing
Not Missing


It was missing when I bought the car, and I didn't give it much thought until I noticed there was a hole in the inlet manifold. I easily repaired the hole, but it's not exactly good for the engine health to have a hole past the air filters and map sensor...

Forgot to mention, it's an OM642 Diesel with 265 hp stock.And, the peg thingy is attached to the lid of the air-filter box.

Oh, and Hi!

Last edited by SantaClaw; Jun 13, 2025 at 02:36 PM. Reason: Forgot engine info
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Old Nov 25, 2025 | 08:35 PM
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1CM
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W251123
Hello,
I wish I had an answer for you, though I have the same problem with a car that’s new to me. I have none, did you manage to find a solution?

I would appreciate a photo of the stud if you can provide a closer photo?

Regards,
Cam

Originally Posted by SantaClaw
So, I am looking for the part # or part I need to replace one of the engine cover mounts for my R-Class.
I asked the local dealer, and they couldn't find it in the parts diagram..

Without it, the engine cover had rubbed a hole in the inlet manifold...


Missing
Missing
Not Missing
Not Missing


It was missing when I bought the car, and I didn't give it much thought until I noticed there was a hole in the inlet manifold. I easily repaired the hole, but it's not exactly good for the engine health to have a hole past the air filters and map sensor...

Forgot to mention, it's an OM642 Diesel with 265 hp stock.And, the peg thingy is attached to the lid of the air-filter box.

Oh, and Hi!
Reply
Old Nov 25, 2025 | 09:26 PM
  #3  
SantaClaw's Avatar
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2012 Mercedes R-Class R350 CDI 265HP Long
I made a new one out of sheet metal and some rebar. + a bit of welding and grinding. It's currently -28.5c outside, and I simply do not want to mess with opening the hood etc when it's this cold.
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Old Nov 26, 2025 | 08:51 AM
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2014 S63 2010 ML350 Bluetec 2009 SL550
Toss engine cover in the trash. Has no real function except to get in the way of service and maintenance, and provide comfort and cover to rodents.
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Old Nov 26, 2025 | 08:53 AM
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2012 Mercedes R-Class R350 CDI 265HP Long
It does reduce some parts of the intake noise noticeably inside the cabin.

These are diesels, and the cover goes over the fuel rail etc
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Old Nov 26, 2025 | 09:58 AM
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2014 S63 2010 ML350 Bluetec 2009 SL550
I know - I have one (see my sig). Don't notice any difference with it gone.
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Old Nov 27, 2025 | 06:17 AM
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W251123
Fair enough, thats cold! could it possibly FEBI 40836?
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