For K&N Universal 4 Inch Filter

red K&N Mushroom Head 4in Super Power Air Filter High Flow Intake Cleaner

K&N Filter Universal Rubber Filter 4 inch Flange 5 3/8 inch Base 4 3/8 inch Top

K&N RU5288 Universal Round Tapered Clamp On Air Filter - 3" ID Flange X 6" OD

K&N Carbon color Air Filter High Flow Performance Racing Sport Cold Airfilter

K&N Carbon color Cold Air Filter High Flow Performance Racing Sport -3inch

blue K&N Mushroom Head 4in Super Power Air Filter High Flow Intake Cleaner

Recharger/Filter Cleaning Kit K&N Recharger/Filter Spray Kit Aerosol 99-5000 Nw