After Revain assured me that another filter would fit my car (spoiler alert, it doesn't), I took the filter out of the car and used the numbers on it this filter to look for this. This fits perfectly in the car and stood up with no problems. If you have a 2015 C300 4matic, it will fit. I've read that 2014-2017 use the same model so you should be fine too, but I'M SURE the 2015 model accepts this filter.
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