K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Technical Bulletin


This Part Fits:

Year	Make	Model	Submodel
2015-2017	BMW	X3	sDrive28i
2015-2017	BMW	X3	xDrive28d
2011-2017	BMW	X3	xDrive28i
2011-2012	BMW	X3	xDrive35i
2017	BMW	X4	M40i
2015-2018	BMW	X4	xDrive28i