Genuine OEM Audi Rear Left Upper Door Hinge, part number 3C4833401D. This robust hinge is designed for the rear left door, enabling it to pivot smoothly and securely open and closed. It plays a crucial role in maintaining door alignment and structural integrity. Constructed from high-strength metal with a protective coating, it resists corrosion and withstands repeated use. Using a genuine OEM door hinge ensures precise bolt patterns and factory-specified load-bearing capabilities, which are essential for proper door function, safety, and long-term durability.