K&N 77 SERIES HIGH FLOW COLD AIR INTAKE PERFORMANCE KIT, POLISHED, Replaces Factory Air Filter And Air Box, Designed For Trucks And SUVs, Reusable Filter Lasts Longer, Provides An Additional 9.15 Horsepower At 4700 RPM, Increases Fuel Mileage, Easy To Install, Larger Filter Area Can Increase Service Intervals Up To 100,000 Miles, Manufacturers Warranty, Computer Systems Compatible