K&N Airfilter Kit 57i Performance Cotton Audi A4

K&N 57i kit K&N 57i 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. Benefits of a K&N 57i 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 57i kit in the car and take it out just as easy. On YouTube you can find numerous instructional videos to assist you