K&N 02-03 Ford Explorer/Mercury Mountaineer V6-4.0L Performance Intake Kit

If you're looking to get a bit more pep out of your 2002 or 2003 Ford Explorer or Mercury Mountaineer with the V6-4.0L engine, this K&N Performance Intake Kit is a solid option. This system is designed to help your engine breathe easier by replacing the restrictive factory airbox with a smoother, larger diameter intake tube and a high-flow air filter. The goal here is to let more air into the engine, which can lead to a noticeable improvement in both horsepower and torque.

The intake tube itself is made from high-density polyethylene (HDPE) using a rotational molding process, which helps create a smooth interior surface for better airflow. It's paired with K&N's well-known washable and reusable oiled cotton gauze air filter. This oversized, conical filter is designed for longevity, meaning you can typically go up to 100,000 miles between cleanings under normal highway driving conditions. To keep hot engine bay air from getting into the intake, a custom heat shield is included to help maintain cooler air temperatures entering the engine. K&N backs this kit with their Million Mile Limited Warranty.

Installation is usually straightforward and can often be completed in under an hour with basic tools. This kit is designed as a direct replacement for your stock air intake system.