kn 99-5000 99-0621 aerosol recharger air filter care service kit and air filter cleaner degreaser k&n k&n recharger kit contains k&n air filter cleaner and air filter oil. it is a six-step maintenance system designed to recharge any k&n filter charger air filter. it is biodegradable and safe on paint, chrome, cast aluminum, plastic, rubber and vinyl when used as directed. each kit includes filter cleaner, an aerosol filter oil spray can or a squeeze oil bottle, and a service decal. complete instruction is included with this kit. k&n power kleen is a high-performance cleaner and degreaser used to remove road grime, engine exhaust and grease from cotton air filters. it is now formulated to clean those troublesome and demanding cleaning jobs. this cleaner is specially formulated to remove oil, lubricants, grease, grime, and other deposits from most surfaces including cotton air filters, painted surfaces, chrome, plastic and more!