Pleated cotton gauze filter for S&S® Stealth air cleaners. Filter media is washable and must be re-oiled. Applying new filter oil enhances the filtering efficiency and restores to color to the filter. This replacement filter has a choice of standard flow or the high flow filter element for S&S® Stealth air cleaners that is for air cleaners that already have the 1" taller filter kit installed. Filter only, no hardware.