Genuine OEM Audi Engine Sealing Flange, part number 03G103153B. This cast metal component is engineered to seal critical connections on the engine cylinder block, preventing leaks of oil or coolant. It is typically located at the front of the engine assembly. Made from durable cast alloy, this flange provides a precise fit and robust sealing surface. Using a genuine OEM sealing flange ensures exact dimensions, proper material composition, and reliable long-term sealing performance for engine integrity.