Most automotive air filters are designed to allow more air to flow into the engine. However, the real trick is to flow more air safely. And, that is the promise of the K&N Air Filter to your Mercedes AMG! As every performance driver out there knows, the air filter is the device that removes the contaminants and solid particulates such as dust, pollen, mold, and bacteria from the air supplied to the engine. Thanks to this kind of filtration process, the air that goes inside the engine compartment is clean and will do no harm to the engine system. Such is the regular role of ordinary air filters available in the market today. But, with the K33332859 K&N Air Filter, your 2003-2004 Mercedes AMG does not just get ordinary filtration process. Rather, it benefits from high airflow with a kind of excellent filtration! Every air filter from the K&N brand is designed to increase the horsepower and acceleration of your AMG. And, what is more appealing is the fact that the product is washable and reusable! Getting the K&N Air Filter is a cost-effective decision on your part, plus you can never question the reliability and the quality of the product since it is from the K&N brand. So when it comes to the filtration needs in your Mercedes, always go for the K&N brand for maximum reliability. Our site carries a number of K&N products that include the air filters. Make your choice known, and we will be happy to ship that out to you.