The K&N "Fuel Injection Performance Kit" (FIPK for short) Air Intake kit completely replaces your stock 2005-2009 GT Mustangs restrictive stock air box and paper filter with a high flow K&N filter assembly and intake tube for a noticeable increase in horsepower and acceleration while still providing excellent filtration.
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.