Reviewed By Alex V (Whitehouse Station, NJ) Reviewed for a 2007 BMW X3 —4/14/2014 7:20 AM
I'm using K&N Air and Oil Filters on all of my vehicles. I'm very happy with this.
Reviewed By Kevin P (WAKE FOREST, NC) Reviewed for a 2006 BMW X3 —4/26/2013 5:57 AM
Well made and fits perfectly. Car pulls smoother through top end of RRM range. In first week, MPG went from 26.1, long term combined, to 26.4, only around town. Long term cost effective replacement to stock filter; it pays for itself. Oiled permanent filters can foul the mass-airflow sensor if over-oiled: the aFe Pro-Dry S solves this issue. Have ordered more for the other vehicles I maintain.