Genuine OEM Volkswagen Piston, part number 03H107065S. This piston is a key component within the engine's cylinders, converting the thermal energy from combustion into mechanical work. It forms part of the reciprocating assembly, moving up and down within the cylinder bore. This part is sold as a complete unit including rings and pin. Genuine OEM pistons are manufactured to exact tolerances for proper sealing and efficient operation, ensuring the longevity and performance of your engine.