Using your K&N replacement 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 the same spot where the old one was. Make sure it fits snugly. When it comes to maintenance, every once in a while, check the filter for dirt and debris. If it looks dirty, you can wash it. Use a K&N filter cleaning kit and follow the instructions on the kit. Let the filter dry completely before oiling it with K&N filter oil. As for the warranty, keep your purchase receipt handy in case you need to make a claim. Also, always make sure you're using the filter in the vehicle models it's designed for, as specified in the product description.
