K&N 99-04 Jeep Grand Cherokee L6-4.0L High Flow Performance Kit

If you're looking to get more out of your 1999-2004 Jeep Grand Cherokee with the 4.0L inline-six engine, a K&N High Flow Performance Kit can help. This cold air intake system is designed to replace your stock airbox and filter, allowing your engine to breathe more freely. By doing so, it's engineered to deliver a noticeable increase in both horsepower and torque, making your Jeep feel more responsive, especially when you need it.

The heart of this kit is K&N's signature washable and reusable High-Flow Air Filter, made with oiled cotton filter media. This design not only captures more dirt than a standard paper filter but also allows for significantly better airflow. The intake tube itself is mandrel-bent aluminum, which ensures smooth airflow into the engine. K&N also includes a custom heat shield or air box to help keep the hot air from your engine bay away from the intake charge, which is crucial for performance. You can expect to go up to 100,000 miles between servicing the filter under normal highway driving conditions.

Installation is typically straightforward and can often be completed in under 90 minutes, as the system is designed to fit right into your Grand Cherokee's factory mounting points. K&N backs this kit with their Million Mile Limited Warranty, and it's designed not to void your vehicle's factory warranty.