Not sure which 2003 BMW 5-Series 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:
"Overall fit and finish of materials very good. Instructions somewhat vague and could use larger pictures. Some trial and error needed which is not acceptable. The item took longer than expected to arrive,but was well packaged and easy to track. AA's price was excellent.
I did notice a slight performance increase with a slightly more aggressive sound. I was concerned that it would be too loud,but wasn't." —Primiano N from Hilton Head Island, SC bought an aFe Cold Air Intakes for a 2003 BMW 5-Series, 525i, body style E39, 2.5L 6 cyl. engine.