K&amp;N 77-2578KS Performance Intake Kit for '09-'10 Ford Flex 3.5L V6<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Estimated horsepower gain of 9.19 HP at 4914 RPM</li><li>Designed to improve throttle response and engine sound</li><li>Easy to install， usually in 90 minutes or less</li><li>Replaces entire factory air intake system</li><li>Lasts up to 100，000 miles before service is required (depending on driving conditions)</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41zNmL5RvmL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/7128yvtheHS.png" noproxy>