Genuine OEM Volkswagen Hinge Reinforcement, part number 7T0806166. This reinforcement strengthens the hinge mounting area for improved durability and alignment. It is located at position 3 in the diagram. The reinforcement is made of metal and measures 0.145m in length, 0.068m in width, and 0.04m in height, weighing 0.203 kg. Genuine OEM hinge reinforcements ensure the structural integrity of the door frame.