Replace spark coils and spark plugs 2012 R350
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From: Austin, Texas
2012 R350 4Matic
Replace spark coils and spark plugs 2012 R350
Hello,
What is the procedure to replace the coils and spark plugs on a 2012 R350 with a V6 in it? Do I have to remove the intake manifold?
Thanks,
Henry
What is the procedure to replace the coils and spark plugs on a 2012 R350 with a V6 in it? Do I have to remove the intake manifold?
Thanks,
Henry
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
Thread Starter
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From: Austin, Texas
2012 R350 4Matic
Are these the intake runners that have to be removed? I have looked around for YouTube videos, but found them for the older model years.
Last edited by Caracal13; Nov 20, 2025 at 10:31 AM.
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From: Fleriduh
W212 E63S Wagon - GSL580 - E63 - E350 - C300
In my head it was the two plastic pipes that go from your grill to the engine cover that holds your air filter. Both of them easily snap off with your hands one tube on each side of the engine right in front of your face
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2012 R350 4Matic
So the runners in the photos I sent don't have to come off?
I had the plastic cover off the car and the brace, but I didn't see the coils. I thought I had seen a video or write-up that said the intake had to come off, but I can't find it now.
I had the plastic cover off the car and the brace, but I didn't see the coils. I thought I had seen a video or write-up that said the intake had to come off, but I can't find it now.
Last edited by Caracal13; Nov 20, 2025 at 11:28 AM.
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From: Austin, Texas
2012 R350 4Matic
I have been working on various vehicles for 40 years. I have the brace and the plastic covers off. The cover that has V6 on it does not simply pop off. There is one snorkel on the right side of the engine. The air cleaner box to the throttle body to the what appears to be the intake cover (has V6 on it) is a solid piece. I don't see how it is connected to the engine. Please see the attached photos. This may be a different engine than what you have. Thoughts?
Last edited by Caracal13; Nov 20, 2025 at 02:50 PM.
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2006 E350
Yes they were talking about the older V6, I have a 2012 as well it only came with the M276 which is most commonly found in 2011ish E350’s if you are looking for tutorials on YouTube. Ours just sits a little farther back in the engine bay and the cowel covers most of it.
that plastic part with the V6 is the top of the intake manifold/runners which you will need to remove to get to the top of the “V” and access them.
here is a great video walk through same engine different engine bay.
def you need to remove the cowel it’s not hard to do but after that follow the video
that plastic part with the V6 is the top of the intake manifold/runners which you will need to remove to get to the top of the “V” and access them.
here is a great video walk through same engine different engine bay.
def you need to remove the cowel it’s not hard to do but after that follow the video
