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Airforce Pre-Cleaners

K & N Filters

What is a K&N Airforce Pre-Cleaner?
The K&N Airforce Pre-Cleaner is a specially designed foam filter wrap made to extend the service interval of your K&N Filtercharger when used in very dusty conditions. They are made from large, open cell foam. The Airforce Pre-Cleaner will stop 90% of the dirt, yet only add a 2% restriction to the airflow of the filter. The Airforce Pre-Cleaner is designed to be used with K&N Filter Oil and must be cleaned with K&N Cleaner or soap & water. The Airforce Pre-Cleaner is custom made to fit each application, and there are four universal cut-to-fit sizes available.


ROUND SHAPE


Description K&N FilterCharger® Applications Part #
3" I.D. x 2-1/2" H All 3"O.D. x 2-1/2" H filters 25-1480
3-3/4" I.D. x 6" H All 3-1/2 & 4"O.D. filters up to 6" long 25-1770
4-1/2" I.D. x 1-1/2" H RU-0330, RU-0340, RC-0330, RC-0340 25-0330
14" I.D. x 4" H All 14" O.D. X 4" H filters 25-3750
14" I.D. x 5" H All 14" O.D. X 5" H filters 25-3760
14" I.D. x 6" H All 14" O.D. X 6" H filters 25-3770


CONICAL SHAPE


Description K&N FilterCharger® Applications Part #
6" I.D., 5" I.D. top, 9" H RE-0810,RE-0870,RE-0910,RU-2510,RU-2520 25-0810
6" I.D., 5" I.D. top, 14" H RE-0800,RE-0820,RE-0860,RE-0880 25-0880


OVAL SHAPE


Description K&N FilterCharger® Applications Part #
3-1/4"x4-1/2" I.D., 1-1/2"H All 3-1/4" x 4-1/2" oval custom air cleaner assemblies 1-1/2" H 25-4250
4-1/2"x7" I.D., 3-1/4" H All 4-1/2" x 7" oval custom air cleaner assemblies 3-1/4" H 25-3340
4-1/2"x7" I.D., 6" H All 4-1/2" x 7" oval custom air cleaner assemblies 6" H 25-3346
5-1/2"x9" I.D., 3-1/4" H All 5-1/2" x 9" oval custom air cleaner assemblies 3-1/4" H 25-3460
5-1/2"x9" I.D., 6" H All 5-1/2" x 9" oval custom air cleaner assemblies 6" H 25-3490
9"x20" I.D., 3" H All 9" x 20" oval custom air cleaner assemblies 3" H 25-1963
9"x20" I.D., 4-1/2" H All 9" x 20" oval custom air cleaner assemblies 4-1/2" H 25-1964
9"x20" I.D., 6" H All 9" x 20" oval custom air cleaner assemblies 6" H 25-1966


UNIVERSAL SHAPE


Description K&N FilterCharger® Applications Part #
7" wide x 48" long Cut to fit a variety of applications, secure w/velcro strips (included) 25-3900
18" wide x 48" long Cut to fit a variety of applications, secure w/velcro strips (included) 25-3918
24" wide x 48" long Cut to fit a variety of applications, secure w/velcro strips (included) 25-3924
30" wide x 48" long Cut to fit a variety of applications, secure w/velcro strips (included) 25-3930

More Info: K&N Filter Wrap Search by Dimension

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For more information on this product, visit K & N Filters' website.