aFe 31-10233 Magnum FLOW Pro Dry S OE Replacement Air Filter for Honda Civic L4-1.8L Engine Pro Dry S, OE direct replacement, 3-layer cotton gauze non-oiled Washable and reusable air filter, made from 100 percentage 55 shore 'A' polyurethane, 25 millimeter deep pleats Progressive bump seal design, hassle-free installation Full urethane housing Manufactured and assembled in the USA