Using your K&N air filter is a breeze. First, find your vehicle's factory air box. Then, simply remove the old air filter and drop in the K&N replacement filter. Make sure it fits snugly in place. When it comes to maintenance, you don't need to replace it often. Just wash it when it gets dirty. Use a K&N air filter cleaning kit. Follow the instructions on the kit to wash and re - oil the filter. This will keep it working well. Keep in mind, always check the filter regularly for any signs of damage. If you notice any tears or big holes, it might be time to get a new one. Also, make sure to keep the filter dry before reinstalling it in your vehicle.