The STIHL 41801200604 Carburetor, also identified as C1Q-S110, is a genuine OEM replacement part designed to ensure optimal fuel delivery and engine performance for a range of STIHL outdoor power equipment. This carburetor is crucial for maintaining the correct air-fuel mixture, essential for efficient operation and starting. It is compatible with various STIHL models including the FS90, FS100, FS110, HL100, HT100, KM90, KM100, KM110, and SP90 series, ensuring a precise fit and reliable function. Replacing a faulty carburetor with this genuine STIHL part helps restore engine power and reduce emissions.