K&N 06-09 BMW 135/335/535 Drop In Air Filter

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need. K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. Our stock replacement air filters for street vehicles are covered by K&N's Million-Mile Limited Warranty. Fitment: BMW 1 Series M Base 2011 BMW 135i Base 2008 to 2010 BMW 335i Base 2007 to 2010 BMW 335i xDrive Base 2009 to 2010 BMW 335is Base 2011 to 2013 BMW 335xi Base 2007 to 2008 BMW 535i Base 2008 to 2010 BMW 535i xDrive Base 2009 to 2010 BMW 535xi Base 2008 BMW Z4 sDrive30i 2010 to 2011 BMW Z4 sDrive35i 2009 to 2016 BMW Z4 sDrive35is 2011 to 2016