K&N Recharger Kit 99-5000 is designed to restore the performance of your K&N oiled cotton air filter and includes a 6.5-ounce aerosol can of oil and a 12-ounce spray bottle of POWER KLEEN. POWER KLEEN industrial strength degreaser helps dissolve dirt old filter oil and other filter-clogging particulates allowing them to be rinsed away easily with water. When used as directed the included air filter oil remains suspended in the pleats of the cotton filter material allowing for exceptional contaminant capture. View the complete cleaning instructions included in your kit.