K&N Airforce Foam Pre-Cleaner® Air Filter Wraps

K&N Airforce Foam Air Filter Wraps

What is a K&N Airforce Air Filter Wrap?

The K&N Airforce Pre-Cleaner® is a specially designed foam air filter wrap made to extend the service interval of your K&N Filtercharger when used in very dusty conditions.

Red colored pre-cleaner filter wraps are made from large, open cell foam that is oiled. They will stop 90% of the dirt, yet only add a 2% restriction to the airflow of the filter. Our red colored Airforce Pre-Cleaners are designed to be cleaned with K&N Cleaner or soap and water then re-oiled with K&N air filter oil. These pre-cleaners are custom made to fit each application, and there are four universal cut-to-fit sizes available.

Gray colored pre-cleaners are made with smaller foam cells that do not use oil. They are designed to be cleaned with K&N Air Filter Cleaner or soap and water.


Round Air Filter Wraps

Filter Wrap Size Filter Wrap Color Air Filter Size Air Filter Wrap
3" I.D. x 2-1/2" H Red 3" O.D. x 2-1/2" H 25-1480
3-3/4" I.D. x 6" H Red 3-1/2 O.D. & 4" O.D. up to 6" long 25-1770
4-1/2" I.D. x 1-1/2" H Red 4-1/2" O.D. x 1-1/2" H 25-0330
14" I.D. x 4" H Red 14" O.D. X 4" H 25-3750
14" I.D. x 5" H Red 14" O.D. X 5" H 25-3760
14" I.D. x 6" H Red 14" O.D. X 6" H 25-3770
16" I.D. x 3" H Gray 16" O.D. x 3" H 25-5200
16" I.D. x 4" H Gray 16" O.D. x 4" H 25-5300
16" I.D. x 5" H Gray 16" O.D. x 5" H 25-5400

Cone Air Filter Wraps

Filter Wrap Size Filter Wrap Color K&N Filter Applications Air Filter Wrap
3.125" I.D., 3" I.D. top, 3.375" H Red SU-2391 25-2588
6" I.D., 5" I.D. top, 9" H Red RE-0810,RE-0870,RE-0910,RU-2510,RU-2520 25-0810
6" I.D., 5" I.D. top, 14" H Red RE-0800,RE-0820,RE-0860,RE-0880 25-0880
7" I.D., 4.5" I.D. top, 4.875" H Red YA-6601 25-6601
8" I.D., 6 5/8" I.D. top, 12" H Gray RC-5166,RC-5169,RC-5171 25-5166

Oval Air Filter Wraps

Filter Wrap Size Filter Wrap Color K&N Air Filter Applications Air Filter Wrap
3-1/4"x4-1/2" I.D., 1-1/2"H Red 3-1/4" x 4-1/2" oval custom air cleaner assemblies 1-1/2" H 25-4250
4-1/4"x5-1/2" I.D., 2" H Red 4-1/4" x 5-1/2" oval custom air cleaner assemblies 2" H 25-1691
4-1/2"x7" I.D., 3-1/4" H Red 4-1/2" x 7" oval custom air cleaner assemblies 3-1/4" H 25-3340
4-1/2"x7" I.D., 6" H Red 4-1/2" x 7" oval custom air cleaner assemblies 6" H 25-3346
5-1/2"x9" I.D., 3-1/4" H Red 5-1/2" x 9" oval custom air cleaner assemblies 3-1/4" H 25-3460
5-1/2"x9" I.D., 6" H Red 5-1/2" x 9" oval custom air cleaner assemblies 6" H 25-3490
9"x20" I.D., 3" H Red 9" x 20" oval custom air cleaner assemblies 3" H 25-1963
9"x20" I.D., 4-1/2" H Red 9" x 20" oval custom air cleaner assemblies 4-1/2" H 25-1964
9"x20" I.D., 6" H Red 9" x 20" oval custom air cleaner assemblies 6" H 25-1966

Universal Air Filter Wraps

Filter Wrap Size Filter Wrap Color K&N Air Filter Applications Air Filter Wrap
7" wide x 48" long Red Cut to fit a variety of applications, secure w/velcro strips (included) 25-3900
18" wide x 48" long Red Cut to fit a variety of applications, secure w/velcro strips (included) 25-3918
24" wide x 48" long Red Cut to fit a variety of applications, secure w/velcro strips (included) 25-3924
30" wide x 48" long Red Cut to fit a variety of applications, secure w/velcro strips (included) 25-3930

K&N Air Filter Wraps

K&N PreCharger and DryCharger Air Filter Wraps

K&N PreCharger and DryCharger Air Filter Wraps are designed to extend the service interval of your K&N Air Filter when used in extreme driving conditions.

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