Not sure which 2011 BMW 3-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:
"Have been using K&N airfilter products on all of my vehicles (motorcycles and cars) since the late 70's. They pay for themselves over time and most of all I don't have to track anotherone down for the rest of the life of the car or motorcycle. They offer excellent overall performance too. Recharge is simple as all you have to do is remove it, spray on the the release agent, rinse it out, let it dry, re-coat lightly with the spray on oil, then simply re-install. I recharge my air filters during every third oil change." —David H from Ventura, CA bought a K&N Air Filters for a 2011 BMW 3-Series, 335i, 3.0L 6-cyl. engine.
"have used k&n filters for years on many types of vehicles and as always has been and excellent product for gas mileage and performance." —Roy G from San Antonio, TX bought a K&N Air Filters for a 2011 BMW 3-Series, 335i, 3.0L 6-cyl. engine.