Genuine OEM Volkswagen Piston, part number 028107065AR001. This piston is a critical component within an internal combustion engine, designed to move within the cylinder bore and transmit force to the crankshaft. It is part of the piston assembly, which includes rings and a connecting rod. This specific piston has a blue finish. Genuine OEM pistons are manufactured to exact tolerances for proper sealing, heat dissipation, and durability, ensuring the longevity and performance of the engine.