Uni Filter’s Cleaner has powerful agents that quickly strip away grease and dirt, yet won't damage air filters. Just spray it on, let it soak and rinse it off. Safe to use on all OEM and performance air filters. Uni Foam Filter Oil allows for maximum airflow while keeping the dirt and dust particles out. Service kit #UFM-400 includes 5.5 oz. aerosol oil and 14.5 oz. cleaner.