Keep your motor’s lungs fed with clean, energy-rich oxygen from the “the world’s best air filter”—K&N Air Filters. Constructed from pleated sheets of oiled cotton gauze, these air filters strip away grime without blocking airflow. Fully reusable. Million Mile Limited Warranty.
Say goodbye to the days of re-oiling your reusable performance filter—innovative aFe Pro-Dry S Air Filters boast a 100% oil-free cotton gauze construction for wicked airflow. Easy to clean and reuse. The Pro-Dry S Air Filter is backed by a Lifetime Warranty.
When you equip your engine bay with an aFe Air Filter, you’ll never need another performance air filter in your ride’s life. aFe expertly crafts your automotive air filter from high-quality cotton gauze to trap grime without blocking airflow. Cleanable and reusable. Lifetime Warranty.
Drop in optimal engine filtration and performance with the Airaid SynthaFlow Air Filter. Replacing flimsy factory paper filters, this high-performance filter combines multiple oiled cotton gauze and synthetic fiber layers to deliver ultimate airflow and protection. Lifetime Warranty.
Not sure which 2009 Infiniti G37 Air Filters - Custom Fit is right for you? We have over 14143 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:
"This most recent purchase is a pair of K&N filters for the first air-filter change on my new Infiniti G37S. (This model has two separate air-intakes for better breathing).
I've been using a K&N filter on my 2000 Miata for ten years now (and 90k+ miles), and it still looks brand new. Use the K&N cleaner and re-apply K&N oil to the filter about every 15k miles and you are 'Good-To-Go'! These filters pay for themselves by the second cleaning and you never buy another air filter for that car...EVER!
Thanks for a great product; I recommend K&N to everyone!" —Curtis E from Humble, TX bought a K&N Air Filters for a 2009 Infiniti G37.