Using your K&N air filter is easy. First, locate your vehicle's factory air box. Open it up and take out the old air filter. Then, simply drop the K&N filter into the air box. Make sure it fits snugly and close the air box. That's it! When it comes to maintenance, you don't need to replace the filter often. Just wash it when it gets dirty. You can use K&N's special cleaning kit for best results. Rinse the filter gently with water and let it dry completely before re - oiling it with K&N filter oil. Keep in mind that when handling the filter, be careful not to damage the cotton media. Also, make sure to follow the instructions on the cleaning and oiling products to ensure the filter works at its best.