The Cummins Onan Oil Seal 0509-0494 is a cylinder liner part designed for diesel engines with 12 valves and 6 cylinders. Specifically manufactured by Cummins in India, this unit is compatible with Cummins equipment and features a high-quality construction to ensure durability and reliability. With a focus on precision and performance, this oil seal is a crucial component in maintaining the optimal functioning of heavy equipment and industrial machinery.