Mercedes W205 R231 Brake Perforated Disc Front Left Right N/O/S Set A2314211812

Brake discs from the Mercedes W205 R231 Brake Perforated Disc Front Left Right N/O/S Set are original, ventilated brake system components designed for the front axle, for both the left and right sides. Thanks to their perforated working surface, they ensure stable braking performance and predictable vehicle behavior across a wide range of road conditions. This solution is dedicated to drivers who expect precise brake system response and consistency with the factory characteristics of their Mercedes.

Specifications and technical data

• SKU: A2314211812
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2314211812
• Substitutable numbers: A2314211812, A 231 421 18 12
• Location on the vehicle: Front, Left, Right
• Category: Brake Disc Rotors

Purpose and compatibility

The presented set of discs is designed for use on the front axle of the vehicle, intended for both the left and right sides. The construction, tailored to the Mercedes brake system, allows for maintaining the correct mounting geometry, proper positioning relative to the caliper, and the appropriate friction surface for the brake pads specified for the given model.

The original Mercedes brand guarantees consistency with the vehicle's factory parameters, which translates into predictable operation of assistance systems, such as ABS or ESP, without the need for software intervention or additional mechanical modifications.

Construction of perforated brake discs

The perforated working surface of the discs facilitates the effective discharge of gases and dust generated during intensive braking. This reduces the risk of fading and improves the stability of the friction coefficient during longer braking cycles. Additionally, the holes in the friction surface support heat dissipation, which helps maintain a more uniform temperature distribution across the disc.

Such a design solution is particularly beneficial in vehicles with a higher curb weight or those used dynamically, where the brake system is exposed to repetitive, heavy loads. The use of perforated discs allows for maintaining consistent braking force and better response to brake pedal input.

Performance characteristics and installation

As an item from the Brake discs category, the set has been prepared for direct installation in place of factory components, while adhering to standard service procedures. The placement on the vehicle covers the front on the left and right sides, which allows for the simultaneous replacement of both discs on the axle and the restoration of balanced brake system operation.

The product is offered in a used condition, which means that a standard service inspection for working thickness, potential signs of overheating, and radial runout is recommended before installation. Properly selected and installed discs ensure harmonious cooperation with brake pads and other system elements, minimizing the risk of vibrations and uneven wear.

Why choose original Mercedes discs

Original Mercedes brake discs are characterized by their fitment to a specific vehicle platform, which translates into proper balance, adequate rigidity, and predictable behavior in road conditions. Using a component from the same product line as the factory equipment reduces the risk of compatibility issues and facilitates the diagnosis of potential faults in the future.

An additional advantage is the ability to verify compatibility using OEM numbers and interchangeable numbers, which allows for precise selection of discs for a specific engine and equipment version. When purchasing used brake system components, it is particularly important to take a conscious approach to assessing the technical condition and history of the part.

Safe selection of used brake system components

When choosing used brake discs, it is worth using reliable sources and proven verification procedures. A guide describing how to assess the condition of discs, calipers, and ABS elements step-by-step will be helpful – you can find it in the article Second-hand brake system: how to safely select discs, calipers, and ABS?. This is a practical checklist that makes it easier to make an informed purchasing decision based on the actual technical condition of the parts.

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other elements from the same group, such as additional discs, compatible pads, or other system components, check the available parts in the Mercedes brake discs category.