Not sure which 2009 Nissan Altima 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:
"Put this intake in my 2009 altima. Wow! The difference is amazing. U step on the pedal and the car has a awsome punch to it. But what's a awesome improvement is the sound. My car is LOUD now! The intake has that nice sucking sound every intake has but roars right after that suck. Then at WOT it has a whirling noise and makes my car sound like a jet! Ontop of all that gas mileage has increased alot. I love it!" —Sean H from Hobe Sound, FL bought a K&N 69 Series Typhoon Intake Systems for a 2009 Nissan Altima, 2.5L 4-cyl. engine.