Genuine OEM Mercedes-Benz Crankshaft Bearing Cap Screw, part number A0000140071. This screw is essential for securing the crankshaft bearing cap, which houses the crankshaft and is critical for engine operation and lubrication. It is located in the engine block assembly. Genuine OEM screws ensure the correct thread pitch and material strength required for the high stresses within an engine, guaranteeing reliable performance and preventing catastrophic failure.