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.
Technical Bulletin


This Part Fits:

Year	Make	Model	Submodel
2007-2008	BMW	X3	3.0si
2009-2010	BMW	X3	xDrive30i
2006-2008	BMW	Z4	Coupe 3.0si
2006-2008	BMW	Z4	Roadster 3.0i
2006-2008	BMW	Z4	Roadster 3.0si
2009	BMW	Z4	sDrive30i
2009	BMW	Z4	sDrive35i