
K&N Airforce pre-cleaner foam wrap (3-3/4" x 6") that fits over a K&N air filter to extend service intervals in very dusty conditions. Red pre-cleaners are oiled after cleaning while gray versions are not; both are made from open- or smaller-cell foam respectively. The pre-cleaner can be washed with K&N Cleaner or soap and water and provides an extra protective layer to keep the main filter cleaner longer.
K&N Precleaner Wrap 3-3/4in X 6inl