Not sure which 1978 Mercedes-Benz 300 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:
"Installing a K&N filter has made an enjoyable improvement in the performance of my old Mercedes 300D. I plan on installing K&N filters in every car I own." —David B from Wichita, KS bought a K&N Air Filters for a 1978 Mercedes-Benz 300.