Genuine OEM Mercedes-Benz Wheel Brake Caliper, part number A0004232581. This critical braking component is responsible for applying hydraulic pressure to the brake pads, which then create friction against the brake rotor to slow or stop the vehicle. It is located on the rear left wheel assembly. The precise engineering ensures consistent and reliable braking force. Genuine OEM calipers are manufactured to strict tolerances for optimal stopping power and safety.