The STIHL 41161200601 Carburetor HD-3B is an original equipment manufacturer (OEM) replacement part designed for optimal fuel delivery in various STIHL power tools. This genuine carburetor ensures reliable engine performance and is compatible with specific models including the FS 120, FS 200, FS 250, FS 300, FS 350, BT 120 C, FR 350, FR 450, FR 480, and SP 200. Maintaining the correct fuel-air mixture, this HD-3B carburetor is crucial for the efficient operation and longevity of your STIHL equipment.