Reviewed By stephen K (HUNTSVILLE, AL) Reviewed for a 2007 BMW 3-Series —8/14/2017 9:10 PM
K&N filter is easy to install and lasts longer than your car. Wash, rinse, and oil once a year.
Reviewed By Matthew G (BROKEN ARROW, OK) Reviewed for a 1997 BMW 3-Series —9/27/2016 9:59 AM
It's a great filter. I love it and it's awesome talking about it. The description said it would fit in my 1997 Bmw 328i but it's almost too big. I'd say it's about 1/8" in width (if you were looking down at in your car, top and bottom). I had to work it, but it's in there. I still will buy another.
Reviewed By Mario C (CEDAR RAPIDS, IA) Reviewed for a 2007 BMW 3-Series —11/21/2013 8:53 PM
The quality of this product is without question.I did have a bit trouble to put it in my stock air box. It was as if the size oaf the filter was not right. I put it against to OEM filter and it looked like it was a bit bigger. However this just made the filter to fit snug in the box sealing well on all corners. I have not noticed yet mpg improvement, but it hasn't been that long. I did notice that the engine was holding higher rpms a bit longer making the engine appear more responsive.