K&N 63-2556 Air Charger Air Intake Kit More usable power and acceleration throughout the engine's RPM range; Estimated horse power gain 1547 hp @ 3,829 rpm Easy to install, usually in 90 minutes or less and lasts up to 100,000 miles before service is required, depending on driving conditions Engineered to specific vehicle design and works with original manufacturer computer systems; See vehicle search above for compatibility Street legal in most US States and comes with a million mile limited warranty Over sized conical filters replace OEM filter and air box are and is washable and reusable