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

Mercedes W205 R231 Brake Perforated Disc Front Left Right is a complete, used pair for the left and right side, designed for installation on the front axle. This set is a solution for drivers expecting efficient, predictable, and stable braking while maintaining the factory performance characteristics of the Mercedes braking system. Thanks to the perforated friction surface, the discs ensure better dissipation of gases and debris from the brake pad lining, which promotes consistent braking performance.

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 vehicle fitment

The offered set is designed as a brake system component mounted on the front axle, left and right side. The design of the discs complies with the vehicle manufacturer's factory specifications, which facilitates installation in place of the original components without the need for modifications to the hub, caliper, or dust shields. Using a dedicated solution for a specific vehicle platform allows for maintaining the correct pad contact geometry, even distribution of braking forces, and proper cooperation with assistance systems such as ABS or ESP.

Construction of perforated brake discs

The perforated friction surface of the discs promotes stable brake system operation under various operating conditions. The holes in the friction surface help in:

• dissipating gases generated during intensive braking,
• reducing the "fading" phenomenon (loss of braking efficiency at high temperatures),
• removing minor debris from the pad surface,
• maintaining more uniform contact between the pad and the disc.

As a result, the brake system maintains consistent operating characteristics, which is important both in daily city driving and during dynamic highway use.

Performance characteristics and benefits of the set

The set including the left and right front discs allows for the simultaneous replacement of both axle components, which is recommended for even wear and vehicle stability during braking. Using perforated discs in combination with properly selected pads allows for:

• achieving predictable braking force across a wide temperature range,
• reducing the risk of uneven braking between the left and right sides,
• maintaining proper cooperation with the vehicle's factory safety systems.

As an item from the Brake discs category, the set aligns with the design standards used by the vehicle manufacturer, which helps maintain the factory balance between comfort and braking efficiency.

Product condition and installation aspects

The offered set of discs is in used condition, which means that before installation, a professional assessment of thickness, axial runout, and friction surface by an experienced service center is recommended. Proper verification of operating parameters allows for confirming the possibility of further safe use in a specific vehicle. Installation should be performed in accordance with the manufacturer's procedures, including proper wheel bolt torque, hub cleaning, and correct bedding-in of the disc-pad set after installation.

Safe selection of used brake system components

When choosing used brake discs, it is worth paying attention to compatibility with the specific vehicle model, the condition of the friction surface, the absence of cracks, and permissible wear limits. Detailed tips on how to evaluate the condition of used brake components step-by-step can be found in the article: Second-hand brake system: how to safely select discs, calipers, and ABS?.

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