The Briggs & Stratton 5019 Lo-Tone Muffler is a genuine replacement muffler for Briggs & Stratton 3- to 4-horsepower vertical engines, designed to fit 1/2-inch NPT exhaust ports. As a Lo-Tone muffler, it provides a quieter exhaust tone while maintaining compatibility with standard Briggs & Stratton exhaust systems. It is listed as a replacement for OEM part numbers 394569S and 5019K, making it a direct fit for 3-4 HP Briggs & Stratton vertical engines.
