Genuine OEM Mercedes-Benz Brake Booster Reservoir Screw, part number A0004312071. This specialized screw is designed to securely fasten the brake booster reservoir in place, ensuring its stability and proper function within the braking system. The screw features a metallic construction with a protective coating. Genuine OEM fasteners are manufactured to exact specifications, guaranteeing a secure fit and preventing vibration-related loosening, which is critical for safety-related components like the brake system.