Genuine OEM Volkswagen Engine Piston Rings Set, part number 03H198151D. This set of piston rings is crucial for sealing the combustion chamber, regulating oil consumption, and transferring heat from the piston to the cylinder walls. These rings are installed in the piston grooves within the engine assembly. Weighing approximately 0.054 kg, the set includes multiple rings designed for precise fit and function. Genuine OEM piston rings ensure correct tension, material composition, and surface finish, which are vital for maintaining engine compression and longevity.