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K&N High Flow Air Filter Installation

C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI
Old 06-10-2015, 01:14 PM
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K&N High Flow Air Filter Installation

Old 07-08-2012, 06:22 AM
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Is there any video for W204 C200K air filter replacement? I've tried hard to find one but in vain. Many thanks!!
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Old 07-18-2012, 12:18 AM
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Originally Posted by grane View Post
What is not silly is that MB will not honor warranty claims covering intake and engine system failures otherwise covered if you use stock e.g., fleece filters when you replace them with oiled filters. If aftermarket manufacturers want to take over this burden they are welcome to. Why don't you call you filter magicians and ask them to assume the liability in writing so you can hand that to your SA?

I have used advanced aftermarket intakes and filters on other cars that were not engineered to the level of my CL or my M113.

The idea that MB would not use a superior intake and oiled filter technology in an AMG if it were better performance wise is quite doubtful.

That's against the law (At least where I live.) Mercedes would have to honor the warranty, unless they can directly prove that the failure was caused by the after market part... <Which in a scenario like this, they probably could not.>
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Old 07-22-2012, 06:20 PM
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2011 C300 Sport
Hey fellas Did a search and noting really helpful, I lost my manual so I couldn't look. can anyone tell me where the cabin filter is on s 2011 C300 W204 model and a good filter to get K&N's are great filters but for our cars the oils is terrible, better with the mann paper style... so just need a pic or anything to show a DIY for a cabin filter.. Thanx so much fellas... If anyone needs help with electric or radio or nav installs feel free to private message mee
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Old 07-23-2012, 01:51 PM
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2004 Mazda6, 1993 RX7
Originally Posted by dodgern View Post
Guys, i appreciate this information on installing K & N Filters for the C300, nice photos alos!. To C-Class_Greek, these filters really do help the car to breathe better that the paper as the K&N use cotton for the filter material and it is much less restrictive and produces much less turbulence than the factory (paper) filters. I had k&N in my old 1997 C230K 5 speed stick and there was a noticeable improvement in acceleration.
... only if the oem offers a significant restriction. K&N drop-in filters are usually bought by people that get bonerrs doing simple DIY projects that are thought to improve performance.

To see if my tracked Rx7 needed a K&N drop-in filter upgrade, I used my trusted Dwyer differential pressure gauge, 0-100" H2O pressure.

Dwyer pressure gauges, Ordering

At first it showed about 1.3 psi drop from the snorkel to just after the filter. I then took the filter out and ran with no filter, and got the same results. I found there was a restriction in a transition in the inlet ducting, so I fixed that and droped in the oem filter and all pressure drop was gone. So the K&N would not help performance.

Now K&N has some cold air filter systems that may help on some cars, doubt it on a W204.

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Old 12-07-2012, 01:13 AM
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2010 E550
Ive always had K&N filters. My last car had 170,000 miles and it never gave me issues. I never had MAF issues.

I have them in my 2010 e550 and they work fine.
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Old 06-30-2013, 02:59 PM
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w204 09 CDi220
Air filter Uk edition.

Hi all- very helpful DIY section.

Just wondering if anyone had instructions for air filter replacement in a w204 UK car c220 2009. The engine cover and air filter replacement DIY appear relevant to US cars only?

I take it air filter box in located in left lower quarter under the engine cover?

would be good to hear your responses ?

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Old 06-30-2013, 03:15 PM
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You can forget any type of performance increase with these filters, the only benefit they provide is a sportier sound.
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Old 08-26-2013, 06:45 PM
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K and N Be careful!

FYI, I installed K and N's on my 2003 C240 a few years ago and it later had an erratic idle. Took it to the dealer and they said my MAF was clogged with oil, @$150 to clean it.

I called K and N and they said they guarantee they won't clog the MAF. They said to send them the bill and they gave me half of my money back.

I used K an N's on my old Yukon with no problems but I don't recommend K and N's on the Mercedes. Be careful!
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Old 12-16-2015, 09:58 AM
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c250 Coupe Sport
oh no! all the images are broken. please fix!
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