K&N Filters 25-3930 Airforce Pre-Cleaner Foam Filter Wrap; Universal; 30 in. x 48 in.;

The K&N Airforce Pre-Cleaner is a specially designed foam filter wrap made to extend the service interval of your K&N air filter when used in very dusty conditions. The Airforce Pre-Cleaner is designed to be cleaned with K&N Cleaner or soap & water. Red colored Airforce pre-cleaners air oiled with K&N air filter oil after they are cleaned. They are made from large, open cell foam. Gray colored Airforce pre-cleaners do not use oil. They have smaller foam cells. The K&N Airforce pre-cleaner is a specially designed foam filter wrap made to extend the service interval of a K&N air filter when used in very dusty conditions. Red colored pre-cleaners are oiled while gray colored pre-chargers are not.