Genuine OEM Volkswagen hex collared bolt, part number N91082801. This fastener is designed for securing engine mounts and related structural components. It features an integrated collar that acts as a built-in washer, distributing clamping force evenly across the mounting surface. Genuine OEM bolts are manufactured to exact metallurgical specifications to withstand the high-stress, high-vibration environment of the engine bay, ensuring that mounts remain secure and properly aligned over the life of the vehicle.