Genuine OEM Audi Rear Brake Caliper Housing, part number 1K0615423N. This essential component is designed to house the intricate brake caliper mechanism, providing structural support and protection for the braking system. It is specifically for the left rear side of the vehicle. Weighing approximately 1.767 kg, this housing is engineered to withstand extreme temperatures and forces encountered during braking. Choosing a genuine OEM caliper housing ensures precise manufacturing tolerances, correct mounting points, and material integrity, which are crucial for the safe and reliable operation of the vehicle's braking system.