Not sure which 1997 BMW 7-Series 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:
"After installing the K&NB in my old 97' BMW 740I I am a believer! Gained 3MPG in the city and 5MPG in Highway! Installed one on the wife's 03' Explorer and will see how that works out but I am sold." —Steve B from Buffalo Grove, IL bought a K&N Air Filters for a 1997 BMW 7-Series.