The K&N Drop-In High-Flow air filter for Ford Mustang 4.0L (2005–2010) and Mustang GT 4.6L (2005–2009) is a reusable, washable replacement that fits the factory air box. Layered, oiled cotton media is engineered to improve airflow while trapping contaminants and is intended to increase horsepower. Built for lifetime use, these filters are backed by K&N's No-Hassle Lifetime Limited Warranty for long-term service.
K&N 05-10 Ford Mustang 4.0L / 05-09 Mustang GT 4.6L Drop In Air Filter