Not sure which 2004 Mercedes-Benz SL-Class Air Filters - Custom Fit is right for you? We have over 14143 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"Knowing my SL 500 sound and performance,I was a little in doubt about notice the change whith the K&N air filters,what a surprise!BIG change,!!!(also mileage increase!)BEN" —Ben F from Miami, FL bought a K&N Air Filters for a 2004 Mercedes-Benz SL-Class.