The AWE S-FLO Air Filter was engineered in-house to be a direct replacement of your factory air filter. Employing the proprietary AWE S-FLO Filter technology, the AWE S-FLO Filter is the largest that can fit within the factory air box. This direct factory replacement filter is a washable, dry-element, large cylindrical filter, that flows better than the stock filter.Washable dry-element filter. Mounts in factory location - Fitment Guaranteed. OE Replacement. Easy to install. Designed, engineered and tested in-house at AWE.