The Husqvarna 508043314 Oil Pump is a genuine OEM replacement part designed to ensure proper lubrication for the saw chain and bar on various Husqvarna chainsaw models, including the 435, 440, 445, and 450 series. This essential component contributes to optimal cutting performance and extends the lifespan of your equipment. It is also compatible with specific Jonsered and Poulan Pro chainsaw models. This part replaces several older Husqvarna oil pump numbers, offering broad compatibility for maintenance and repairs.