Improves Air Flow for More Power. Now you can improve the performance of your 2015-2021 S550 Ford Mustang with a K&N Drop-in Replacement Air Filter. By simply replacing your restrictive stock paper element with a new, high flow cotton gauze K&N filter you will see an increase in power, performance and acceleration – all while still providing excellent air filtration.

Drop-In Replacement. This K&N Air Filter was designed to be a direct fit drop-in replacement for the original factory air box, with no cutting or trimming required for installation.

Application. This K&N Air Filter is designed to be a drop-in replacement for the stock air box on all 2015-2020 V6, GT and EcoBoost Mustangs.

K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N’s 10-Year/Million Mile Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N’s most popular product!