K&N Performance Air Intake Kit 57-1561 with Lifetime Red Oiled Filter for Dodge Ram Pickup Truck 1500 2500 5.7L V8 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) Easy to install, usually in 90 minutes or less Free-flowing high density polyethylene tube