TRD PTR43-00072 Air Filter Designed to separate and trap dirt, and unwanted particles - providing a great combination of filtration, low restriction, engine protection, and durability Washable, reusable oiled cotton filter material medium Metal-reinforced filter pleats, molded into a soft plastic body to form a direct, drop-in replacement for OE paper air filters All TRD high performance air filters are pre-oiled with the correct amount of oil for even saturation without excess residue Designed to be compatible with mass air flow sensors used on Toyota vehicles