The STIHL 42441200603 Carburetor, also identified as C1Q-S209, is a genuine OEM replacement part designed for a range of STIHL outdoor power equipment. This carburetor ensures optimal fuel-air mixture for efficient engine operation and reliable performance. It is compatible with various STIHL FS series trimmers, HT series pole pruners, KM series KombiEngines, and SP series specialized tools, including models like FS 90, FS 100, FS 110, FS 130, HT 100, HT 101, KM 90, KM 100, KM 110, KM 130, SP 90, and SP 90 T.