The STIHL 42266400500 Gear Housing is a genuine OEM replacement part designed for various STIHL trimmers, brushcutters, and pole pruners. This essential component ensures proper power transmission and operation of the cutting attachment. It is compatible with specific models including the FS 90, FS 100, FS 110, FS 130 series, HL 90 K, HL 95, HL 100 series, HT 100, HT 101, HT 130, HT 131, KM 90, KM 100, KM 110, KM 130 series, and SP 90, SP 90 T models. Ensure optimal performance and durability with this authentic STIHL gear housing.