The STIHL genuine oil pump 11286403250 is an essential component designed to provide consistent and efficient lubrication for your chainsaw's cutting system. This high-quality OEM replacement part ensures reliable oil flow, critical for the longevity and performance of the guide bar and saw chain. It is specifically engineered for STIHL MS 440, MS 460, MS 640, MS 650, and MS 660 chainsaw models, guaranteeing a perfect fit and dependable operation. Maintaining proper lubrication with a genuine STIHL oil pump helps prevent premature wear and overheating, ensuring your chainsaw operates at peak efficiency.