Genuine OEM Volkswagen Piston Rings Set, part number 038198151A. This set contains the piston rings that fit around the piston. They are crucial for maintaining compression within the cylinder and preventing oil from entering the combustion chamber. These rings are located on the piston within the engine cylinder. The set includes multiple rings designed for a single piston. Genuine OEM piston rings are manufactured to exact tolerances for optimal sealing and durability, ensuring proper engine function and longevity.