Genuine OEM Volkswagen Piston Rings, part number 06H198151E. These rings are critical components that seal the combustion chamber, prevent excessive oil from entering the chamber, and transfer heat from the piston to the cylinder wall. They are located on the piston in the engine assembly. This set includes multiple rings designed for optimal engine function. Genuine OEM piston rings are manufactured to exact tolerances for proper sealing and durability, ensuring optimal engine performance and a long service life.