The Stihl 41400840905 Engine Housing is a genuine OEM replacement part designed for various Stihl handheld power equipment. This essential component provides protective enclosure for the engine, ensuring proper operation and safeguarding internal parts from external elements. It is compatible with a range of Stihl models including FS 38, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FS 55, FS 55 C, FS 55 R, FS 55 RC, FS 55 T trimmers and brushcutters, HL 45 hedge trimmers, HS 45 hedge trimmers, and KM 55 series KombiEngines.