K&N Cold Air Intake Kit: High Performance, Increase Horsepower: 50-State Legal: Compatible with 2012-2016 BMW (125i, 220i, 228i, 428i, 320i, 328i, 420i)57S-2001

K&N 57s kit K&N 57s kit. A look under the hood of modern cars makes it clear that the air intake is limited by unnecessary bends and kinks. Air flows the best in a straight line, and is most preferable not slowed down by the filter material. With a K&N air filter you optimize the air supply to your engine. This ensures better performance and a better engine sound. Because of this feature many people call it a power filter. This type of K&N air filter replaces the whole factory air box with a fully enclosed injection modified air box, air filter, to reduce noise and cool air. The air box comes with a removable cover for easy maintenance and a custom filter, a Velocity Stack (Vela). This filter is designed to provide an efficient and direct airflow to the engine which provides extra power. Benefits of a K&N 57s kit: 1. More power, more torque and better throttle response. 2. The kit includes all needed brackets, hoses and attachments. 3. Water repellent. 4. Washable & reusable. 5. 4 layers of oiled cotton for maximum protection. The oil layer is a magnet. Dust and dirt is stopped on the outside even though there is 40% more air forced into the engine. 6. 600.000 miles warranty. 7. Only clean every 50.000 to 100.000 miles. 8. The kit features a clear manual. 9. Most kits come with a cold air supply hose. 10. All metal parts are coated for long life. Assembly: You can easily install the K&N 57s kit in the car and take it out just as easy. On YouTube you can find numerous instructional videos to assist you.