Keep your motor’s lungs fed with clean, energy-rich oxygen from the “the world’s best air filter”—K&N Air Filters. Constructed from pleated sheets of oiled cotton gauze, these air filters strip away grime without blocking airflow. Fully reusable. Million Mile Limited Warranty.
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"installed on my 2010 focus SES, and i am seeing a gain of 1-2 mpg. i have always installed a K&N on most every vahicle i've owned and had great results, and this is no exception!" —Greg W from Greene, NY bought a K&N Air Filters for a 2010 Ford Focus, 2.0L 4-cyl. engine.
"when i open the box i new this was a good filter and matched the oem filter in very way. noticed little quicker acceleration. mpg were increased by 1.5" —Stuart W from Orlando, FL bought a K&N Air Filters for a 2010 Ford Focus, 2.0L 4-cyl. engine.