K&N Extreme Duty Airforce Precleaner Air Filter Foam Wraps 14in ID x 5ft H 25-5600

K&N Airforce Pre-Cleaner is a foam filter wrap designed to extend the life of your K&N air filter under dusty conditions. Constructed from open-cell foam, the red pre-cleaner requires K&N air filter oil after cleaning with K&N cleaner or soap and water. The gray pre-cleaner, made from smaller foam cells, does not use oil. Both types are washable. Select the appropriate model for your needs.