K&N Performance Cold Air Intake Kit 63-2590 with Lifetime Filter for Ford Mustang GT 5.0L V8 Guaranteed to increase horsepower Designed to improve throttle response and engine sound Free-flowing high density polyethylene tube Easy to install, usually in 90 minutes or less Replaces entire factory air intake system This item is not for sale in the state of California/Non-CARB compliant Guaranteed to increase horsepower Designed to improve throttle response and engine sound Free-flowing high density polyethylene tube Easy to install, usually in 90 minutes or less Replaces entire factory air intake system