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 place the K&N filter in its place and close the air box. That's it! You're now ready to enjoy better airflow and performance. As for maintenance, you don't need to replace this filter often. It's washable and reusable. When it gets dirty, which usually happens after some time of use, you can wash it with K&N's recommended cleaning kit. Follow the instructions on the kit to clean the filter properly. After cleaning, let it dry completely and re - oil it as directed. This will keep the filter working at its best. Just a reminder, make sure your hands are clean when handling the filter to avoid getting dirt on it. Also, always double - check that the filter is properly installed in the air box to ensure optimal performance.