Prime Line 7-03664 Muffler Replacement for Model Briggs and Stratton 291244, 294599, 395011 Tecumseh 31506, 31987, 32043, 32985, 33283 Winsconsin WD17B 3/4" Male Pipe Thread Fits Tecumseh Models 9, 9B, 9F and 9R Fits Briggs & Stratton Models 100200, 130200, 131200, 170400, 170700, 171700, 190400-190799 Fits Kohler 4-8 HP Engines