Not sure which 2004 BMW 3-Series Air Intake Systems are right for you? We have over 15237 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:
"I own a BMW 2004 330ci,(E46)...The stage 1, easy to install, my son and I installed it in less than 20 minutes, the performance is definitely noticable. You get that deep roar when, punching it to pass or just speeding up. Noticed a slight rise in gas milage sense the install. Love the sound it makes when the ignition is turned off..(the release of vacuum). The price was very reasonable.." —Robert C from Fayetteville, NC bought an aFe Cold Air Intakes for a 2004 BMW 3-Series.