E550 4 matic engine mounts
Thread Starter
Junior Member
Joined: Sep 2017
Posts: 20
Likes: 2
2011 E550
E550 4 matic engine mounts
I'm getting the dreaded vibration at idle, and already replaced the transmission mount. My next step is to replace the engine mounts, but I'm getting different part numbers on the various parts vendors websites. Can someone help me identify the correct parts for the W212 E550 4-matic? Also, any recommendations on OEM vs aftermarket parts?
Member
Joined: Jul 2015
Posts: 172
Likes: 22
From: Outside Philadelphia
2011 E-350
I ran into the same dilemma when I replaced the mounts on my E350. While searching for the mounts I was finding 2 different part numbers for my application. Even after searching this forum I was still not positive I knew which one would fit. Knowing how involved the job would be I didn't want to get the car apart and find I had purchased the incorrect mount. Solution? I purchased both sets and returned the ones that I didn't use.
Senior Member
Joined: Apr 2012
Posts: 432
Likes: 96
From: Just north of Detroit,Michigan
2012 E350 4Matic P2
I replaced mounts on my '12 E350 M276 and they come out through the top. You have the M273 and WIS instructions state that they are removed out the bottom between the front axle carrier and lower rack and pinion. Read through the instructions and see where you can short cut. Hopefully someone on the forum will chime in with first hand experience to aid you. Perhaps the other board Benzworld will have experience also to share.
Attached EPC pdf is using a vin number from an '11 E550 4Matic so parts should be accurate. I would suggest either going with MB original or what many of us think is the best substitute Lemfoerder.
Post back your success story,
Good luck,
Bob
Super Member
Joined: Sep 2013
Posts: 865
Likes: 61
From: Bay Area
14 550 sedan
Like mentioned above are you sure it's the engine mounts? A quote from the dealer will run you something like $3500, independent shop probably around $1800. The 550 4matic mounts are not easy to get to with the v8 and awd. It's like a 10 hour labor operation
Senior Member
Joined: Jul 2017
Posts: 377
Likes: 98
From: Savannah, GA
2010 W212 E550 4matic
I'm getting the dreaded vibration at idle, and already replaced the transmission mount. My next step is to replace the engine mounts, but I'm getting different part numbers on the various parts vendors websites. Can someone help me identify the correct parts for the W212 E550 4-matic? Also, any recommendations on OEM vs aftermarket parts?
Read this : https://mbworld.org/forums/e-class-w...ounts-now.html
And this : https://mbworld.org/forums/e-class-w...-question.html
I didn't make a complete DIY thread but you should find all the info you need by reading the above threads.
The part number for E550 4matics with the M273 NA engine is A2212400417 and you'll need two.
I do recommend OE parts, I cheaped out on the tranny mount and bought a Corteco, which is still causing slight vibrations when in D/R while stopped (nothing like before but still un-MB-like).
You'll also need an 16mm offset wrench to get to the top bolt on each mount.
Good luck!
Thread Starter
Junior Member
Joined: Sep 2017
Posts: 20
Likes: 2
2011 E550
Thanks everyone for the quick responses and very helpful information. I'm impressed with the depth of knowledge and experience from the members of this forum!
How do I know it's the engine mounts? That seems to be a common theme on these cars after a significant mileage (mine is 140,000 kms), and seems a fairly cheap fix if I do the work myself. I would definitely not pay the dealer $3500 to do this!
How do I know it's the engine mounts? That seems to be a common theme on these cars after a significant mileage (mine is 140,000 kms), and seems a fairly cheap fix if I do the work myself. I would definitely not pay the dealer $3500 to do this!
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Member
Joined: Jul 2015
Posts: 172
Likes: 22
From: Outside Philadelphia
2011 E-350
As a cautionary note, the top engine mount bolt(s) on my E-350 4M were almost impossible to get loose. I made the mistake of attempting to "customize" my own wrench to get to them and I ended up spending way more time than I would have if I had purchased the spicific offset wrench for the application. Not sure if the E-550 is the same, but if so, get the wrench before you dive into the job. Trust me!
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Senior Member
Joined: Jul 2017
Posts: 377
Likes: 98
From: Savannah, GA
2010 W212 E550 4matic
Thread Starter
Junior Member
Joined: Sep 2017
Posts: 20
Likes: 2
2011 E550
I finally got around to tackling this job, and with all of the resources that you guys provided (especially Oda112) I've been able to complete the left engine mount. On the right one, I'm getting stuck though on removing the heat shield bolt that is hidden beneath the exhaust header. Do you have any tips, Oda112? Did you do this with extension bars and swivel joints from underneath the vehicle? The only alternative I see is removing the catalytic converter as MB says, which won't be easy either...
Senior Member
Joined: Jul 2017
Posts: 377
Likes: 98
From: Savannah, GA
2010 W212 E550 4matic
I finally got around to tackling this job, and with all of the resources that you guys provided (especially Oda112) I've been able to complete the left engine mount. On the right one, I'm getting stuck though on removing the heat shield bolt that is hidden beneath the exhaust header. Do you have any tips, Oda112? Did you do this with extension bars and swivel joints from underneath the vehicle? The only alternative I see is removing the catalytic converter as MB says, which won't be easy either...
For the top bolt, you should be able to use a flex head too, I can't remember if it was reachable from the top via swivel head & extension. But those are the two methods I used.
Last edited by Oda112; Nov 13, 2018 at 01:20 PM.
Junior Member
Joined: Feb 2016
Posts: 38
Likes: 2
2011 E350, 2007 CLK350
Only in California! LOL!!!!!!
Senior Member
Joined: Dec 2018
Posts: 284
Likes: 60
From: New York
2010 E350 4Matic sedan
Newbie
Joined: Aug 2018
Posts: 10
Likes: 3
From: Denver, CO
E350TE, 400E
Sure, all of the vibration at idle went away. My independent replaced the rear to see how much improvement there would be, some but not enough. He didn't want to do the front mounts as the 4Matic made it very difficult so I took it to Mercedes of Denver.
Difference is dramatic as the vibration had gotten really bad. Dealer charged 6 hours labor which is the book time for the front mounts.
Stu
Difference is dramatic as the vibration had gotten really bad. Dealer charged 6 hours labor which is the book time for the front mounts.
Stu
Junior Member
Joined: Jul 2018
Posts: 63
Likes: 9
From: Kansas City, MO
1966 Mercedes 250S/ 1993 Mercedes 300E 2.8/ 1987 Buick Grand National/ 2019 Ford Ranger FX4 Lariat
A huge "thank you" to everyone for their contributions to the various threads outlining this repair! I have a slight vibration at stoplights on occasion, and seems to be showing early symptoms of needing engine mounts. I'll start with the rear (transmission), but with just over 80k miles, I'm certain the fronts aren't far behind.
Senior Member
Joined: Jul 2013
Posts: 308
Likes: 76
2024 E350
I have 104,000 miles on my '12 E550 4matic and I honestly never even thought about engine mounts until I saw this thread. It doesn't feel like anything is wrong with the car. Most of my driving is on the highway at high speed instead of stop and go traffic, so I don't know if that would make a difference in terms of longevity of the engine mounts.
I love the engine, but these types of expensive repairs have me considering trading it in for a slightly used car, like a 2018 S-Class or 2018/19 7-series with low miles. Although, if the 2020 BMW M550i gets the new V-8 engine with 523hp later this year I would strongly consider leasing that one.
I love the engine, but these types of expensive repairs have me considering trading it in for a slightly used car, like a 2018 S-Class or 2018/19 7-series with low miles. Although, if the 2020 BMW M550i gets the new V-8 engine with 523hp later this year I would strongly consider leasing that one.
Newbie
Joined: Aug 2018
Posts: 10
Likes: 3
From: Denver, CO
E350TE, 400E
Very simple way to test the motor mounts. In gear, parking brake on (just in case) at idle, in gear, with left foot pushing on the brake pedal, just slightly raise the engine rpm 2-300 rpm. This will lift the weight off the most collapsed mount and the engine will smooth out if you have defective motor mounts. If the vibration continues at the increased rpm you should look elsewhere.
Stu
Stu
