The K&N Performance Air Intake Kit completely replaces your turbocharged Focus's restrictive factory air box and paper filter element with a high flow K&N filter assembly for a noticeable increase in horsepower and acceleration all while still providing excellent engine protection.
The K&N Performance Air Intake Kit is designed to install easily with just basic hand tools. No extra modifications or special tools are required for proper installation. All necessary parts and instructions are included. This K&N Series CAI does not require a computer re-tune to operate, and provide you with some well deserved power gains.
The supplied K&N Filter successfully filter's out harmful contaminants with it's unique layered design. K&N Air Filters are made up of layers of specially treated cotton gauze that are sandwiched between two epoxy-coated aluminum wire screens for durability. K&N uses a specially formulated grade of oil to treat the cotton gauze layers which causes a tackiness throughout the cotton’s microscopic strands creating a powerful filtering media that ensures engine protection.
K&N designed their high flow air filters to be reusable. That means there is no need to buy a new filter every few thousand miles, you can just clean the filter, re-oil it, and save money with a K&N Filter Recharge Kit (available at most local auto parts stores).
This K&N Intake is designed to fit all 2013-2017 Focus ST and 2016-2017 Focus RS.