The K&N drop-in replacement high-flow air filter for select 2009–2014 Mercedes-Benz diesel models replaces the factory element to improve airflow and increase horsepower while providing strong engine protection. It uses layered, oiled cotton media that is washable and reusable to preserve airflow and trap contaminants. Backed by K&N's limited warranty, the filter installs into the factory airbox for an easy upgrade.
K&N Replacement Unique Air Filter for 2009-2014 Mercedes-Benz C/CLS/E/GLK/ML/S/SLK Class Diesel