Genuine OEM Audi Rear Brake Backing Plate, part number 1EA609426A. This critical structural component serves as the foundation for all the internal parts of the drum brake assembly, including the brake shoes, wheel cylinder, and adjusters. It is specifically designed for the right side of the rear axle drum brake system. The backing plate weighs approximately 2.021 kg and measures 0.335 m in length, 0.335 m in width, and 0.065 m in height. Choosing a genuine OEM backing plate guarantees the correct mounting points, structural rigidity, and corrosion resistance, which are vital for the proper function and longevity of the entire drum brake system.