This genuine STIHL 41801400605 muffler is an original equipment manufacturer (OEM) replacement part designed for a wide range of STIHL power tools, including select KombiSystem units, brushcutters, pole pruners, and edgers. It ensures proper exhaust noise reduction and engine performance, maintaining the tool's operational efficiency and compliance. This muffler is a direct fit for models such as the FS 90, FS 100, FS 110, FS 130, HT 100, HT 101, HT 130, HT 131, KM 90, KM 100, KM 110, KM 130, SP 90, FC 90, FC 95, FC 100, FC 110, FR 130, HL 90, and HL 95 series.