K&N Universal Round Clamp-On Air Filter 2 1/4" I.D. 57MM Flange (RU-0600)

K&N RU-0600 Universal Clamp-On Air Filter

K&N RU-0600 Universal Clamp-On Air Filter 2.25" Flange 3.5" OD 4" H

K&N for Filter Universal Rubber Filter 2 1/4 inch Flange 3 1/2 inch OD 4 inch

K&N Universal Air Filter RU-0600 Round 4"

K&N Universal Washable/Reusable Centered Red Cotton Gauze Performance Air Filter

K&N Engine Air Filter

K&N Filter Universal Rubber Filter 2 1/4 inch Flange 3 1/2 inch OD 4 inch Height