K&N Performance Cold Air Intake Kit 57-1525 with Lifetime Filter for 1994-2002 Dodge Ram 5.0L Cummins Diesel Estimated horsepower gain of 9.17 HP at 2560 RPM 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 Easy to install, usually in 90 minutes or less