Oregon 35-012 Super Low Tone Muffler Replacement for Briggs & Stratton 393010, 393010S 3/4" pipe thread, fits 7 and 8 HP engines 170400, 170700, 190400 and 190700 series Use Oregon # 02-130 3-1/8" OD x 5-3/8" L Replaces Briggs # 393010, 393010S