Genuine OEM Audi Crankshaft Seal Flange, part number 028103171B. This component is crucial for sealing the crankshaft, preventing oil or other fluid leaks from the engine. It is typically located at the rear of the engine. Constructed from durable metal with an integrated rubber seal, it weighs 0.171 kg. Using a genuine OEM seal flange ensures precise fitment and material quality, critical for maintaining engine oil pressure and preventing costly leaks.