K&N 57-2556 FIPK Performance Air Intake System Fits 2004 - 2008 Fords with 5.4L V8 Fuel Injection Brand New In Original Box - Never Used. Guaranteed to increase horsepower Designed to improve throttle response and engine sound Lasts up to 100,000 miles before service is required (depending on driving conditions) Replaces entire factory air intake system Free-flowing high density polyethylene tube Easy to install, usually in 90 minutes or less Washable and reusable lifetime air filter Full info here: https://www.knfilters.com/search/product.aspx?prod=57-2556 Vehicles it will fit here: https://www.knfilters.com/search/applications.aspx?prod=57-2556