Genuine OEM Audi Engine Piston, part number 06E107066BS. This vital internal engine component is designed to convert the pressure from combustion into mechanical force, which is then transmitted to the crankshaft via the connecting rod. It operates within the engine's cylinders, moving up and down during the engine cycle. Weighing approximately 0.46 kg, this piston is manufactured from high-strength alloys and includes piston rings for sealing. Choosing a genuine OEM piston ensures factory-specified tolerances, material composition, and heat treatment, which are crucial for maintaining engine compression, preventing oil consumption, and ensuring long-term reliability under extreme operating conditions.