Genuine STIHL muffler (P/N 4203 140 0601 / 42031400601), engineered for BR and SR backpack blowers and FS 44 brushcutters. Heavy-duty OEM metal construction ensures correct exhaust flow, reliable noise suppression, and long-lasting performance.

✅ Exact OEM Replacement – STIHL part 4203 140 0601 guarantees precise fit and reliable performance.
✅ Wide Model Compatibility – Fits BR320, BR340, BR380, BR400, BR420 blowers; SR320, SR340, SR400, SR420 mistblowers; and FS 44 brushcutters.
✅ Durable Metal Construction – Built tough to handle extreme heat, constant vibration, and heavy-duty use.
✅ Improves Engine Efficiency – Maintains proper back-pressure for smooth idle, steady power, and long engine life.
✅ Easy OEM Installation – Direct bolt-on design with factory mounting points—no modifications needed.
✅ Noise Reduction – Effectively reduces engine noise for quieter and more comfortable operation.