This genuine STIHL 11170300400 crankshaft is a critical OEM component designed for specific STIHL chainsaw models, including the 020, 020T, MS 200, and MS 200T. It ensures the smooth and reliable operation of the engine's rotating assembly, converting linear piston motion into rotational power. Engineered to STIHL's rigorous standards, this crankshaft provides durability and precise fitment for maintaining peak engine performance and extending the life of your equipment.