Oregon 30-907 Foam Air Filter Replacement for Briggs & Stratton 270579, 270579S Fits 3 and 3-1/2 HP vertical engines with automatic choke, prior to 1992 82500, 92500, 92900 and 93500 series 5-3/8" L x 3-7/8" W x 1-1/2" H Pre-oiled Foam Air Filter Replaces Briggs # 270579, 270579S