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 in your new K&N filter and close the air box. That's it! As for maintenance, you don't need to replace the filter often. But when it gets dirty, you can wash it. Use a K&N air filter cleaning kit. First, spray the cleaner on the filter and let it soak for a few minutes. Then, rinse it gently with water. Let it dry completely, and re - oil it using K&N filter oil. Make sure to follow the instructions on the cleaning kit. One important thing to note is that you should always use genuine K&N cleaning and oiling products. Using other products may damage the filter and void your warranty.