Genuine OEM Audi Engine Piston, part number 022107065AA. This critical engine component is responsible for converting the pressure from combustion into linear motion, driving the crankshaft and generating power. It operates within the engine cylinder, forming a sealed chamber with the cylinder wall and cylinder head. Weighing approximately 0.49 kg, this piston is manufactured from high-strength alloy. Using a genuine OEM piston ensures precise dimensions, correct material composition, and optimal weight balance for smooth engine operation and long-term durability.