Injen 8-Layer Oiled Cotton Gauze Air Filter (Black/Red)The Injen 8 Layer Oiled Cotton Gauze Air Filter (Black Red) is an eight layer filtration element built with oil treated cotton gauze and finished in a striking Black Red color. Designed to filter incoming air while withstanding daily driving conditions, it combines performance with a distinctive, aftermarket ready appearance. Eight Layer Filtration Design: Eight layers of gauze provide multi layer filtration through the filter element. Oiled Cotton