K&N 57-9027 FIPK Performance Air Intake System Estimated horsepower gain of 9.58 HP at 4306 RPM Designed to improve throttle response and engine sound Lasts up to 100,000 miles before service is required (depending on driving conditions) Does not replace entire factory air intake system. Product only comes with intake tube and filter. Easy to install, usually in 90 minutes or less