K&N Engine Air Filter

K&N Filters RU-5138

K&N for Filter Universal Rubber Filter 3 1/2 inch Flange 5 inch Base 3 1/2 inch

K&N Filters RU-5122 High-Flow Original Universal Air Filter

K&N Universal Clamp-On Washable Air Filter RU-2990 3.5" Flange 5"Base 3.5"T 4"H

K&N Engineering Universal Clamp-On Air Intake Filter: High Performance

K&N Round Tapered Universal Clamp-On Air Filter 3.5" Flange ID 4" Height

K&N Universal Clamp-On Air Intake Filter: High Performance, Premium Washable Rep