K&N 99-05 BMW 3 Series Performance Intake Kit

If you're looking to get more out of your 1999-2005 BMW 3 Series, this K&N performance intake kit is designed to help your engine breathe easier. It replaces the factory airbox with a system that allows for a higher volume of airflow, which can lead to a noticeable improvement in both horsepower and torque. This is a popular upgrade for owners who want to unlock more performance from their vehicle.

The intake tube is made from high-density polyethylene (HDPE) using a rotational molding process, which helps increase the volume of air reaching the engine. It comes with K&N's well-known washable and reusable High-Flow Air Filter, which uses oiled cotton media. The oversized, conical shape of the filter means you can go up to 100,000 miles between cleanings under normal driving conditions. A custom heat shield is included to help keep the intake air cooler by blocking heat from the engine bay, which is crucial for performance. Installation is typically straightforward and can often be completed in under an hour.

This K&N intake system is backed by their Million Mile Limited Warranty and is designed to fit a range of BMW 3 Series models from 1999 to 2005, including popular variants like the 325i and 325Ci. It's a solid option for improving your car's performance and throttle response.