Product Review: K&N 99-5000 Aerosol Recharger Filter Care Service Kit The K&N 99-5000 Aerosol Recharger Filter Care Service Kit is a great product for anyone looking to keep their air filter clean and running efficiently. This kit includes everything you need to properly care for your air filter, including an aerosol recharger, filter cleaning solution, and two K&N stickers. One of the things I like most about this kit is that it's easy to use. The instructions are clear and concise, making it simple to follow along and get the job done right. Additionally, the aerosol recharger makes it quick and easy to clean your air filter without having to worry about any messes or spills. Another great feature of this kit is that it's designed for use with K&N filters, which are known for their high quality and durability. This means you can trust that your air filter will be properly cared for and will continue to perform at its best.