Genuine OEM Audi Engine Cylinder Block Seal, part number 057103161G. This precision-engineered gasket is crucial for maintaining the integrity of the engine, preventing oil or coolant leaks from the cylinder block. It is typically installed on the front side of the engine block. Weighing a mere 0.017 kg and measuring 0.4m in length, it is made from high-quality sealing material. Using a genuine OEM seal ensures exact dimensions, proper material composition, and resistance to engine fluids and temperatures, which is vital for preventing costly engine damage and maintaining performance.