Genuine OEM Volkswagen Hex Collared Bolt, part number N10664502. This bolt is used for fastening components in fuel, electrical, and engine systems. It is identified as item 3 in the diagram, securing the engine mounting bracket. The bolt features a hexagonal head and a collar for secure fastening. Genuine OEM bolts are manufactured to exact specifications for material strength and thread pitch, ensuring the integrity and proper function of critical engine and accessory mounts.