Genuine OEM Audi Sealing Flange, part number 057103171AH. This component is designed to seal an opening in the engine block, typically where other components attach, preventing the leakage of oil or coolant. It is located on the engine assembly. Manufactured from durable materials, this flange ensures a tight seal under various operating temperatures and pressures. Genuine OEM sealing flanges are essential for maintaining engine integrity and preventing costly leaks.