Using the K&N air filter is easy. First, open your vehicle's factory air box. Then, simply take out the old air filter and replace it with the K&N filter. Make sure it fits snugly in place. As for maintenance, the filter is washable and reusable. Every once in a while, when you notice a drop in performance or the filter looks dirty, take it out and wash it with a mild cleaner. Let it dry completely and re - oil it before putting it back in. When handling the filter, be gentle to avoid damaging the cotton media. Always follow K&N's guidelines for cleaning and oiling to keep it working at its best.