aFe Power 31-10254 Magnum FLOW OER Pro DRY S Air Filter for Audi A3 Oil-Free Pro DRY S Filter, OE Direct Replacement 3-Layers Of Progressively Finer Porosity Synthetic "Oil-Free" Media, Washable & Reusable Made with 100 percent 55 Shore "A" Polyurethane Frame, 25mm Deep Pleats Progressive Bump Seal Design requires no sealing grease or gasket, Drop-in fitment Manufactured and Assembled in the USA