Review on 🚀 K&N Cold Air Intake Kit: High Performance, 50-State Legal Horsepower Boost: 2002-2003 FORD/MERCURY (Explorer, Mountaineer)57-2537 Compatible by Justin Cage

Although the instructions were a bit confusing I was able to install it in about 2 hours. The product performs as expected - I've noticed around a 1mpg improvement in fuel economy, but it's definitely a bit noisier, although not to the point of becoming unbearable. One of the o-rings was missing, so it's easier to go to my favorite hardware store and buy another o-ring than to break it up, send it back and reinstall it.