Mercedes CL203 C209 W210 Rear Brake Disc Rotor SET Left Right N/O/S A2034230112

Mercedes CL203 C209 W210 Rear Brake Disc Rotor SET Left Right N/O/S is an original set designed for installation on the rear axle of selected models of this brand. The product from the Brake discs category ensures consistency with the factory braking system, stable operating parameters, and predictable vehicle behavior during braking.

Specifications and technical data

• SKU: A2034230112
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2034230112
• Substitutable numbers: A2034230112, A 203 423 01 12
• Location on the vehicle: Rear, Right, Left
• Part type: Brake Disc Rotor
• Category: Brake Disc Rotors

Purpose and vehicle placement

The presented set includes two discs designed for the rear axle, with dedicated installation for the left and right sides. This solution allows for uniform operation of the entire system, maintenance of proper braking geometry, and consistent wear of friction elements. Using the set on both sides minimizes the risk of differences in braking efficiency between wheels, which translates into vehicle stability during intensive braking.

Technical characteristics and compatibility

Mercedes brake discs have been designed as an OEM component, thanks to which they maintain the factory operating parameters of the system. The appropriately selected working diameter, thickness, and friction surface design are adapted to the stock calipers and brake pads used in the given model. In practice, this means:

• proper pad contact with the disc surface,
• even heat dissipation from the rear axle,
• stable operation of ABS/ESP systems under emergency braking conditions. Thanks to maintaining the manufacturer's specifications, installation does not require modifications or adaptations, which facilitates workshop work and shortens service time.

Benefits of using original used discs

Original, used Mercedes brake discs represent a reasonable compromise between cost and quality. Compared to cheap replacements of uncertain origin, OEM components offer:

• material consistency with other brake system components,
• predictable behavior at high temperatures,
• better compatibility with factory calipers and pads. This solution is particularly attractive when servicing older vehicles, where it is crucial to maintain proper brake system operation while optimizing operating costs. A used OEM component allows for maintaining braking characteristics close to the factory ones, which is important for both comfort and driving safety.

Professional installation and operation

When replacing rear brake discs, it is recommended to simultaneously check the condition of the pads, calipers, and brake lines. Proper installation includes thorough cleaning of the hub, checking axial runout, and applying appropriate tightening torques. Thanks to this, the set of rear discs works stably, without unwanted vibrations or noise, and the driver receives a clear, repeatable brake pedal response. To better understand how to select brake system components from the secondary market and how to safely reduce service costs, it is worth reading the guide: Brake calipers under the microscope: How to effectively reduce brake system repair costs by choosing proven recycled parts. The article helps to assess when used components are a rational choice and what to pay attention to when selecting them.

Expanding Mercedes brake system service

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, pads, or brake lines, check the available parts in the Mercedes brake discs category.

Summary

Mercedes CL203 C209 W210 Rear Brake Disc Rotor SET Left Right N/O/S is a technically matched solution for users who want to maintain factory braking characteristics at a rational cost level. The original design, purpose for the rear axle, and compatibility with the stock braking system make it a practical choice for both workshops and conscious drivers who care about safety and predictable vehicle behavior.