Genuine OEM Volkswagen Engine Piston, part number 04E107065JF. This critical engine component is responsible for converting the pressure generated by combustion into linear motion, which in turn drives the crankshaft. It operates within the engine cylinder, forming a sealed chamber with the piston rings. Weighing 0.387 kg and measuring 0.08m x 0.08m x 0.048m, this piston is manufactured to precise tolerances. Using a genuine OEM piston ensures correct compression ratios, optimal heat dissipation, and the precise fit required for long-term engine reliability and performance.