K&N E-9289 Replacement Air Filter Focus 2013-2017

The E-9289 custom air filter is manufactured to replace the air filter in the 57S-4000 performance air box. The filter can be washed and reused repeatedly.

The K&N E-9289 Air Filter is designed to increase horsepower and protect your engine by reducing restriction and providing excellent filtration. The E-9289 custom air filter is manufactured to replace the air filter in the 57S-4000 performance air box and it comes with a K&N embossed lid cap. The filter media can be washed and reused repeatedly.

-2013 Ford Focus
-2014 Ford Focus
-2015 Ford Focus
-2016 Ford Focus
-2017 Ford Focus