Genuine OEM Volkswagen Inner Door Deformation Element, part number 5H0868691C. This safety component is located within the left rear door structure, where it is designed to absorb and dissipate impact energy during a collision. Its primary function is to help protect occupants by managing crash forces and preventing excessive intrusion into the cabin. Weighing 0.091 kg, a genuine OEM deformation element ensures the correct material properties and structural integrity, critical for maintaining the vehicle's passive safety performance.