Genuine OEM Mercedes-Benz Front Brake Disc, part number A0004212312. This brake disc is designed for the front axle and provides the critical surface upon which the brake pads apply friction to slow and stop the vehicle. It features a vented design for heat dissipation and is often perforated for weight reduction and improved cooling. Genuine OEM brake discs are manufactured with precise tolerances and high-quality materials to ensure consistent braking performance, durability, and resistance to warping under heavy use.