K&N 69-1206TP Typhoon Air Intake Kit, Complete Cold Air, Polished Estimated horsepower gain of 3.85 HP at 5097 RPM Designed to improve throttle response and engine sound Easy to install, usually in 90 minutes or less Replaces entire factory air intake system Lasts up to 100,000 miles before service is required (depending on driving conditions) Air Filter Height - 6.5 inches Air Filter Large End Diameter - 6 inches