Not sure which 2003 BMW Z4 Air Intake Systems are right for you? We have over 20796 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 have a 2003 BMW Z4 Roadster 2.5i The installation was quite easy. No vehicle modification was necessary. I think I notice some increase in power. However, I have not had a chance to really road test my cold air intake (if you know what I mean). Overall, I am very pleased with it." —Judd A S from Rapid City, SD bought an aFe Cold Air Intakes for a 2003 BMW Z4, 2.5L 6 cyl. engine.