The Genuine Volvo Hydraulic Line O Ring (V70) - 9143918 is a small rubber ring used in the hydraulic system of a Volvo V70 vehicle. It is designed to create a tight seal between the hydraulic line and the connecting component, preventing any leaks or loss of hydraulic fluid. This O ring is an essential component for maintaining the proper functioning of the vehicle's hydraulic system, ensuring smooth and efficient operation. It is a genuine Volvo product, made with high-quality materials to ensure durability and reliability.