Genuine OEM Audi Brake Caliper Housing, part number 1J0615423B. This component forms the main body of the brake caliper, enclosing and protecting the piston, seals, and other internal brake caliper components. This specific housing is for the rear left wheel. Weighing 1.542 kg, it measures 0.17m in length, 0.14m in width, and 0.1m in height. Opting for a genuine OEM brake caliper housing ensures precise machining, superior material strength, and corrosion resistance, which are critical for proper brake function, safety, and long-term reliability.