Brake Disc Mercedes W203 W209 Front Left Right N/O/S Perforated Brake Disc Set

Visual condition of the part

The product shows signs of use visible in the photos.

Brake Disc Mercedes W203 W209 Front Left Right N/O/S Perforated Brake Disc Set is a set designed for the front axle, ensuring stable and predictable braking in daily operation. The perforated design supports the dissipation of heat and gases from the working surface, which translates into more consistent braking system performance and better interaction with brake pads. The set is matched to the specifications of Mercedes C-Class W203 and CLK W209 models, which facilitates selection and installation.

Specifications and technical data

• SKU: A2034210912
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2034210912
• Substitutable numbers: A2034210912, A 203 421 09 12
• Location on the vehicle: Front, Left, Right
• Category: Brake Disc Rotors

Purpose and vehicle fitment

The set of front brake discs has been designed for the front axle of Mercedes C-Class W203 and CLK W209 cars, allowing for installation on both the left and right sides. Such fitment allows for maintaining the proper geometry of the braking system, as well as correct cooperation with the calipers and hub. Thanks to this, the driver receives components that structurally correspond to the factory solutions used in these models.

Perforated brake disc design

Perforated brake discs support the dissipation of heat and brake pad wear products from the friction surface. The holes in the disc help reduce overheating, which promotes maintaining stable friction over a wider range of operating temperatures. This type of solution is particularly beneficial for more intensive driving styles, frequent braking, or operation in urban conditions, where the braking system works under variable loads.

Performance characteristics and installation

The set of discs intended for the front of the vehicle is responsible for the main part of the braking force, which is why proper fitment of the components has a direct impact on driving safety. The perforated working surface promotes even pad wear and improves water drainage from the disc when driving in the rain. Installation is carried out in place of the factory discs, while maintaining the standard service procedure for the front axle in Mercedes W203 and W209 models.

Condition and benefits of choosing an original component

The offered set belongs to the Brake Disc Mercedes W203 W209 Front Left Right N/O/S Perforated Brake Disc Set category and is a used item, which allows for reducing the cost of braking system maintenance while maintaining compliance with Mercedes factory specifications. Choosing original components from this group promotes the consistency of system operating parameters and also facilitates subsequent diagnostics and service. For many users, this is a reasonable compromise between quality and the budget allocated for repairs.

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.

Safe selection of used braking system components

When choosing used brake discs, it is worth paying attention to compatibility with the specific body version and braking system, as well as correct installation in pairs on the axle. It is also good practice to simultaneously check the condition of the pads, calipers, and lines so that the entire system works consistently. If you want to go through this process in an orderly manner, a guide describing the key stages of verification and purchase will be helpful – you will find it in the article "Second-hand braking system: how to safely select discs, calipers, and ABS?".

Additional information about the advantages of using original, used components is also provided by material dedicated to the quality of OEM parts – you can read more about this in the post "Quality assurance and OEM safety – why are used original car parts the best choice for your car?".