k&n air filter large size service kit cleaner and red oil plus 2 k&n stickers included k&n regular service allows your reusable air filter to properly block out harmful dirt and debris. our degreaser and aerosol oil kit will keep your filter in top condition, ensuring optimum horsepower and maximum air flow. maximize your results by re-oiling your filter every 10,000 miles and cleaning it every 50,000 miles. <p></p> <p> your kit will include a 32 oz. spray bottle of cleaner and degreaser and a 12.25 oz. aerosol can of red filter oil. plus each kit includes 2 k&n stickers!</p>