Genuine OEM Volkswagen Engine Piston, part number 059107065FD. This critical engine component is located within the cylinder and is responsible for converting the pressure generated by combustion into mechanical force, driving the crankshaft. It forms a key part of the reciprocating assembly. Weighing 0.87 kg, this piston is engineered for high strength and precise fitment. Choosing a genuine OEM piston ensures factory-specified material composition, heat treatment, and dimensional accuracy, which are vital for maintaining engine compression, efficiency, and longevity.