50-State Legal Intakes for Many Ford Mustang, Focus, and Explorers

K&N® has recently received an executive order from the California Air Resource Board allowing multiple cold air intake systems to be used in California. These 50-state legal intakes are now offered for the applications listed below, including many Ford Focus, Fusion, Explorer, and Mustang models.

Please view the individual product pages for the most up-to-date information on vehicle applications and legal status.

*Excluding certain 2012-2018 test groups. Please view individual product pages for exact vehicle specifications and legal status.

K&N offers several intake system options to cater to different aesthetic, ease of maintenance, and filter media preferences. All are protected by K&N’s famous 10-Year/Million Mile Limited Warranty.

High-density polyethylene (HDPE) rotationally molded tubes help increase the volume of airflow to your engine, and provide a guaranteed increase in horsepower and torque. These systems are paired with a washable, reusable High-Flow Air Filter™ featuring oiled cotton filter media, and the oversized, conical design allows you to go up to 100,000 miles between filter services under normal highway driving conditions. A custom heat shield or air box helps protect intake air from the high temperature of your engine bay, and the entire system can typically be installed in less than 90 minutes.

*Certain 57-series and 63-series intakes are designed to function with the factory air box, and feature a panel filter paired with a custom roto-molded intake tube.

Mandrel-bent aluminum intake tubes help provide an increase in airflow to your engine, and each 69-series and 77-series intake system offers a guaranteed increase in horsepower and torque. These systems are paired with a washable, reusable High-Flow Air Filter™ featuring oiled cotton filter media, and the oversized, conical design allows you to go up to 100,000 miles between filter services under normal highway driving conditions. A steel heat shield helps protect intake air from the high temperature of your engine bay, and the system can typically be installed in less than 90 minutes.

Blackhawk Induction™ air intake systems feature an oil-free synthetic filter media, black powder-coated aluminum intake tube, and all-black components. The layered DRYFLOW® synthetic filtration media provides increased airflow and exceptional engine protection without requiring oil, and a steel heat shield helps protect intake air from the high temperatures of your engine bay. The system can typically be installed in less than 90 minutes.

Visit the vehicle search page to explore air intake system options for your vehicle. Join the millions of customers who trust K&N to help them increase performance and protection!

*Horsepower gains vary among products and applications, but each K&N performance air intake system is designed to increase airflow efficiency for specific vehicles and their engines. Each kit undergoes significant testing to help ensure that the filter and intake tube are engineered to deliver large increases in airflow and horsepower. Please visit individual product pages to view horsepower estimates for your specific vehicle.