Skip to main content

K&N 04 BMW 525i 2.5L-L6 Drop In Air Filter

Upgrade your BMW 525i's performance with the K&N 04 BMW 525i 2.5L-L6 Drop In Air Filter. This high-performance air filter is designed to increase horsepower and acceleration while providing excellent filtration.

  • Washable and reusable design
  • Custom designed to fit into your existing factory air box
  • Drop-in design for easy installation
  • Covered by K&N's Million-Mile Limited Warranty

With its state-of-the-art design of layered, oiled cotton media, this air filter is engineered to improve airflow and capture contaminants. Get superior airflow and superior performance with K&N's most popular product!

Make Model Year Type
BMW 525i 2004 Base
BMW 525i 2005 Base
BMW 525i 2006 Base
BMW 525i 2007 Base
BMW 525xi 2006 Base
BMW 525xi 2007 Base
BMW 528i 2008 Base
BMW 528i 2009 Base
BMW 528i 2010 Base
BMW 528i xDrive 2009 Base
BMW 528i xDrive 2010 Base
BMW 528xi 2008 Base
BMW 530i 2004 Base
BMW 530i 2005 Base
BMW 530i 2006 Base
BMW 530i 2007 Base
BMW 530xi 2006 Base
BMW 530xi 2007 Base
BMW Z4 2007 M Coupe
BMW Z4 2007 M Roadster
BMW Z4 2008 M Coupe
BMW Z4 2008 M Roadster
Reviews for “K&N 04 BMW 525i 2.5L-L6 Drop In Air Filter”

Average rating of 0 out of 5 stars