The K&N E-2011 is a reusable, drop-in replacement air filter for the 2002 Mercedes-Benz C200 with the 1.8L inline-four. Its media is oiled cotton, so you wash and re-oil the element instead of buying a new disposable filter at each service. Many of the Mercedes-Benz C-Class models from 2002 through 2011 appear in the manufacturer's replacement-filter coverage, so this part belongs to a well-documented W203 application family.
The case for this filter over a stock paper element is lifetime value. A washable element cuts recurring replacement costs and keeps the factory air box intact. Cleaning follows a defined procedure that the manufacturer lays out for its oiled cotton stock-replacement filters, which makes maintenance repeatable rather than guesswork. Horsepower gains are not confirmed for this part in the manufacturer's material reviewed here, so buy it for reusability and filtration, and confirm any performance claims directly with the manufacturer. Searchers looking for a W203 C200 1.8L washable air filter, a reusable cotton gauze intake filter, or K&N E-2011 cleaning and oiling steps will find the core details here.
Yes. The manufacturer's procedure for its oiled cotton stock-replacement filters calls for cleaning, rinsing, and drying the element first, then applying K&N filter oil and letting it wick for about 20 minutes until the entire pleated surface shows a uniform red color.
The manufacturer states that many Mercedes-Benz C-Class models from 2002 through 2011 are covered by its replacement air filter line. Confirm your exact engine and model year against the manufacturer's application catalog before ordering.
Removing the stock element means opening the air box lid, lifting out the old filter, and wiping out the housing so no debris falls into the intake. Before installing the K&N, apply the manufacturer's cleaner and oil coating as described above, then drop the filter into the housing and reinstall the lid. The manufacturer's guidance calls for cleaning with low-pressure water from the clean side outward, and it says to avoid rinsing from the dirty side so the dirt is not pushed deeper into the media. Confirm install difficulty and any clip or hardware details against the manufacturer's install sheet for this specific part before the first installation.
