K&N 57-6011 FIPK Performance Air Intake System Estimated horsepower gain of 14.46 HP at 5918 RPM Designed to improve throttle response and engine sound, replaces entire factory air intake system Lasts up to 100,000 miles before service is required (depending on driving conditions) Air filter large end diameter 6.5 inches, height 6.5 inches Easy to install, usually in 90 minutes or less