E-Class (W211) 2003-2009

E550 engine air filter change question

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Old Feb 8, 2013 | 03:11 PM
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SethP's Avatar
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2008 E550
E550 engine air filter change question

After changing both filters with exact oe replacements I noticed that there is a minor gap on both sides beneath the bottom torx screw, which holds the two pieces together.

I think/hope that it doesnt impact cleanliness as the gap, I think, if anything would funnel air into the prefiltered air and not past the filter itself.

Have you guys noticed this small gap? Is it normal to be there? Or am I not doing something right in the reassembly?
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Old Feb 8, 2013 | 04:47 PM
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XLR82XS's Avatar
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From: SE Michigan
2006 E500 4matic wagon
No gaps. Take it back out and check fitment - it's a tight fit.
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Old Feb 8, 2013 | 06:13 PM
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2008 E550
I have literally taken the thing apart and put it back together about 10 times, but it doesn't seem to matter it always ends up the same.

So I've taken some pics just to be sure you guys see what is happening.

Having seen the pics, is this a problem?


Look to the far right of this, see how the lip comes up a little?


In this one, see how the spacing isn't consistent?

Both sides look exactly the same, and no matter which way I flip the filters, the same happens.
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Old Feb 8, 2013 | 08:34 PM
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ozusa's Avatar
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2004 E320 4matic Sedan
My E320 has a similarly-imperfect air-cleaner. I ended up ignoring it after trying several ways to get it right. I suspect it never was good in the first place, or had warped over the years.
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Old Feb 9, 2013 | 10:48 AM
  #5  
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From: McLean, VA
2003 E500 Benz & 2015 BMW M235ix
Originally Posted by SethP
I have literally taken the thing apart and put it back together about 10 times, but it doesn't seem to matter it always ends up the same.

So I've taken some pics just to be sure you guys see what is happening.

Having seen the pics, is this a problem?


Look to the far right of this, see how the lip comes up a little?


In this one, see how the spacing isn't consistent?

Both sides look exactly the same, and no matter which way I flip the filters, the same happens.
My 2003 air filter replacement did the same thing as your vehicle. The heat from the engine warps the air filter casement unit so that it doesn't seal totally in one area each side. But the pressure from the screws on both sides of the rubber frame of the air filters should keep a air tight seal.
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Old Feb 9, 2013 | 11:32 AM
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From: Clifton, NJ
96 and 08 911 turbos
while not quite right, there is a thick seal on the filter. it will be fine.
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