Authentic STIHL muffler (P/N 4144 140 0604 / 41441400604) designed for FS 40–70 series brushcutters and KM 56 Kombi engines. Durable metal construction delivers reliable noise reduction, proper back-pressure, and seamless fit as a direct OEM replacement.

✅ Exact OEM Replacement – Genuine STIHL part 4144 140 0604 (also listed as 41441400604) ensures perfect fit and reliable performance in compatible machines.
✅ Wide Model Compatibility – Works seamlessly with STIHL FS 40, FS 50, FS 56 (C-E, R, RC-E), FS 70 (C-E, R, RC-E), HT 56 C, and KM 56 C / RC (incl. C-E).
✅ Robust Metal Construction – Built from durable metal to withstand heat, vibration, and outdoor conditions for long service life.
✅ Improves Engine Performance – Maintains proper exhaust flow and back-pressure for smooth operation and consistent power.
✅ Direct Bolt-On Fit – OEM mounting points allow easy installation with no modifications required.
✅ Reduces Operating Noise – Provides effective noise reduction for quieter, more comfortable operation.