Genuine OEM Mercedes-Benz Front Brake Caliper Spreader Spring, part number A0004211501. This spring is a critical component of the front brake system, ensuring the proper separation of brake pads from the rotor when the brakes are not applied, which helps prevent drag and wear. It is located in the front brake caliper assembly. Made from high-strength spring steel for consistent performance. Genuine OEM brake components are manufactured to precise tolerances to ensure optimal braking performance and safety.