K&N Engineering knn33-2399

K&N drop-in High-Flow air filter for Nissan 350Z (2007–2009) and Infiniti G35/G37/EX35 (2007–2009) applications replaces the factory element with layered, oiled cotton media engineered to improve airflow and trap contaminants. The washable, reusable filter installs into the stock air box, is designed to increase horsepower, and is backed by K&N's No-Hassle Lifetime Limited Warranty while reducing disposable filter waste.

K&N 07-09 350z/370z/G35/G37 Drop In Air Filter