Using your K&N cabin air filter is a breeze. First, locate your factory cabin air box. Open it carefully and remove the old filter. Then, place the new K&N filter in the same position as the old one, making sure it fits snugly. Close the air box. As for maintenance, check the filter regularly. If it looks dirty or clogged, it's time to clean it. To clean, gently remove the filter and use a mild detergent and water. Rinse it thoroughly and let it dry completely before reinstalling. Keep in mind not to use harsh chemicals as they may damage the filter. Also, make sure the filter is completely dry before putting it back to prevent mold growth. Under normal conditions, follow the K&N 10 - Year/Million Mile Limited Warranty for long - term use.