Genuine OEM Citroen Crankshaft Pulley Bolt, part number 1682800780. This essential bolt is designed to securely fasten the crankshaft pulley to the crankshaft, a critical function for the engine's timing and accessory drive. It is located at the front of the engine, holding the main drive pulley in place. Weighing 0.1684 kg, this bolt is manufactured from high-strength steel to withstand significant rotational forces. Using a genuine OEM bolt ensures the correct thread pitch, tensile strength, and head design for reliable and safe engine operation.