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C300 Stock Resonator Dimensions

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Old 02-15-2024, 01:33 PM
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2009 C300
C300 Stock Resonator Dimensions

Hello, does anyone know what the dimensions of a stock resonator for a 2009 c300 is? I haven't been able to find dimensions from Mercedes parts description and cant find a good scale picture of one. I have a xpipe installed on my car and thinking of getting a aftermarket resonator to cut down on vibrations/drone. If anyone has one sitting around would really appreciate a quick measure of the width and length.
Old 02-15-2024, 04:21 PM
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W204 2010 C300 4matic Sport M272
Which ones are the resonators?


Old 02-15-2024, 04:27 PM
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2009 C300
Originally Posted by TimC300
Which ones are the resonators?

The big suitcase resonater to the left of the red arrows is the one im talking about.
Old 02-15-2024, 05:15 PM
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W204 2010 C300 4matic Sport M272
I did a rough measurement reaching under using a yard stick so its not exact. I measured joint to joint and was getting 20-1/2" long. Width around 8" but I couldnt see that well, probably a few inches wider.


Old 02-15-2024, 06:10 PM
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2009 C300
Originally Posted by TimC300
I did a rough measurement reaching under using a yard stick so its not exact. I measured joint to joint and was getting 20-1/2" long. Width around 8" but I couldnt see that well, probably a few inches wider.

thanks alot I really appreciate it.
Old 02-17-2024, 02:28 PM
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'13 GLK350 4matic,'09 C300 4matic,'15 GLA250,'07 Honda Odyssey, '18 GLE 43
Originally Posted by Jigor3955
Hello, does anyone know what the dimensions of a stock resonator for a 2009 c300 is? I haven't been able to find dimensions from Mercedes parts description and cant find a good scale picture of one. I have a xpipe installed on my car and thinking of getting a aftermarket resonator to cut down on vibrations/drone. If anyone has one sitting around would really appreciate a quick measure of the width and length.
How on earth are you having a drone on a xpiped C300? A lot of us with an Xpipe on the c300 don't have such drone. What xpipe did you use? majority of us here used the magnaflox xpipe. The xpipe should be installed where the original resonator is so not sure where you placed your xpipe.

Last edited by shotgun_banjo; 02-17-2024 at 02:31 PM.
Old 02-17-2024, 03:02 PM
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2009 C300
Originally Posted by shotgun_banjo
How on earth are you having a drone on a xpiped C300? A lot of us with an Xpipe on the c300 don't have such drone. What xpipe did you use? majority of us here used the magnaflox xpipe. The xpipe should be installed where the original resonator is so not sure where you placed your xpipe.
I used the magnaflow 2.25 xpipe with some borla pro xs mufflers. Maybe just the shop I took it to ****ed it up but I get really bad vibrations around the 2-3k rpm range. My magnaflow xpipe did have some pinholes in it and I told the shop to fill them in.
Old 02-18-2024, 12:11 AM
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'13 GLK350 4matic,'09 C300 4matic,'15 GLA250,'07 Honda Odyssey, '18 GLE 43
Ahhhh you replaced the mufflers. ThAt is your problem. You should have placed the xpipe first. Do you still have the stock exhaust? If not, time to find a wrecker and get one.

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