This genuine Mercedes crankshaft pulley bolt is a vital component for any Mercedes engine. The bolt is made of durable steel and ensures that the crankshaft pulley stays tightly secured to the engine. This product includes bolts and is specifically designed for Mercedes-Benz vehicles. The manufacturer part number for this bolt is A 006 990 70 04. It is a perfect replacement for old or worn out bolts, ensuring that your engine runs smoothly and efficiently. This bolt is suitable for use in various Mercedes-Benz models and is a great addition to any mechanic's toolkit.