Restore your K&N air filter to like-new condition in just six easy steps with the K&N Filters Complete Filter Service Kit. Containing both an air filter cleaner and replacement air filter oil, the kit has everything you need.The air filter cleaner, K&N Power Kleen, dissolves dirt build-up, road grime, grease and old filter oil and washes it all away with water when done. Let the filter dry completely and then spray on the included air filter oil. The kit comes with a 355ml pump bottle of K&N Power Kleen and a 204ml aerosol spray can of air filter oil. It is designed specifically for use with K&N air filters. Six-Step Maintenance SystemSuits Any K&N Air FilterRestores Air Flow Efficiency