K&N replacement air filter. The filter lasts as long as the life of your engine. If your car gets serviced normally a new filter is installed. A K&N filter you can wash and reuse again. This saves considerably on the air filter and maintenance costs. 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 is for replacing the original filter in the air box. You open the standard air filter housing/air box, replace the original filter with the K&N air filter and close the case. These types of air filters are quite easy to install. This is called a replacement filter and we also have K&N air filters that replace the whole air box. Benefits of a K&N replacement air filter: 1. More power, more torque and better throttle response. 2. Water repellent. 3. Washable & reusable. 4. 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. 5. 600.000 mile warranty. 6. Only clean every 45.000 to 100.000 miles. 7. The kit features a clear manual. Assembly: You can easily install the K&N replacement air filter in the car and take it out just as easy. On YouTube you can find numerous instructional videos to assist you. If you still want to have assistance when installing your K&N air filter you can always go to your AutoStyle dealer.