Genuine OEM Audi Rear Left Brake Caliper, part number 4G0615403A. This component is responsible for applying pressure to the brake pads, slowing the vehicle, and includes the electronic parking brake actuator for secure parking. It is designed for the rear left wheel position. Weighing approximately 3.46 kg, it is constructed from durable materials to withstand high braking forces and heat. Choosing a genuine OEM brake caliper ensures exact hydraulic and electronic compatibility, proper piston function, and reliable long-term braking performance, crucial for vehicle safety.