The Stihl 41400210300 crankcase is a genuine OEM replacement part designed for various Stihl outdoor power equipment, including trimmers, brushcutters, and hedge trimmers. This essential component houses the crankshaft and other internal engine parts, providing structural integrity and proper function for models such as the FS38, FS45, FS55, HL45, HS45, and KM55. Manufactured to Stihl's rigorous standards, this crankcase ensures a precise fit and reliable operation, restoring the performance and longevity of your equipment.