K&N 77-1553KP Performance Intake Kit with Polished Tube for Jeep Wrangler JK 3.8L V6 2007 - 2011 Estimated horsepower gain of 7.92 HP at 4807 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)