K&N BMW Drop In Air Filter - 33-2231

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.

This Part Fits:

Year	Make	Model	Submodel
1999	BMW	318ti	Base
2000	BMW	323Ci	Base
1999-2000	BMW	323i	Base
2001-2006	BMW	325Ci	Base
2001-2005	BMW	325i	Base
2001-2005	BMW	325xi	Base
2000	BMW	328Ci	Base
2000	BMW	328i	Base
2001-2006	BMW	330Ci	Base
2001-2005	BMW	330i	Base
2001-2005	BMW	330xi	Base
2001-2006	BMW	M3	Base
2004-2005	BMW	X3	2.5i
2004-2006	BMW	X3	3.0i