K&N Performance Cold Air Intake Kit 77-2591KP with Lifetime Filter for Ford F150 5.0L V8 Guaranteed to increase horsepower Designed to improve throttle response and engine sound Free-flowing aluminum tube Replaces entire factory air intake system Lasts up to 100,000 miles before service is required (depending on driving conditions) 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 aluminum tube Replaces entire factory air intake system Lasts up to 100,000 miles before service is required (depending on driving conditions)