Genuine OEM Mercedes-Benz Brake Disc, part number A000423091207. This rear brake disc provides the essential surface for brake pads to generate friction, enabling the vehicle to stop safely and effectively. It is designed to withstand high temperatures and stresses associated with braking. The vented design helps dissipate heat, preventing brake fade. Genuine OEM brake discs are manufactured to precise tolerances for optimal performance, durability, and compatibility with your vehicle's braking system.