Not sure which 2004 BMW 3-Series Air Filters are right for you? We have over 14810 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
When i bought my 2004 BMW 330i someone told me to put a K&N filter in and it would make a difference. I decided to install it myself and i could not beleive the difference! It was like my car could not breath before with the factory air filter. My car runs faster, easier and is more responsive. My car can "breath freely now" with the K&N Filter.
This is my fifth one for my car.
Chaz " —Chaz J from Tampa, FL bought a K&N Air Filters for a 2004 BMW 3-Series, 330i, 3.0L 6-cyl. engine.