Mercedes-Benz C CLK Class W203 C209 ABS Hydraulic Brake Pump Unit A0054312912

Mercedes-Benz C CLK Class W203 C209 ABS Hydraulic Brake Pump Unit is a specialized component from the ABS and ESP system group, responsible for precise pressure control in the brake circuits. The offered module is designed for Mercedes C-Class and CLK vehicles, ensuring stable operation of the anti-lock braking system and traction control in demanding road conditions. This is a solution for users who expect a proven, factory-standard design and want to restore the full functionality of their safety system.

Specifications and technical data

• SKU: A0345457232
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0345457232
• Substitutable numbers: A0345457232, A 034 545 72 32, A0044316212, A 004 431 62 12, A0054312912, A 005 431 29 12, AS, A0064310312
• Category: ABS & Stability Hydraulic Units

Purpose and function in the vehicle

The ABS hydraulic brake pump used in the Mercedes-Benz C-Class W203 and CLK C209 works in conjunction with the electronic control of the ABS and ESP system, regulating pressure in the brake lines for individual wheels. As a result, the wheels do not lock up during emergency braking, and the vehicle maintains steerability and directional stability.

This element is crucial for the proper operation of safety-assist systems, such as traction control and electronic stability control. Replacing a worn or damaged pump with an original Mercedes module allows for the restoration of the correct braking system characteristics without interfering with the vehicle's factory architecture.

Advantages of using the original hydraulic module

Using the original ABS hydraulic pump in the Mercedes-Benz C / CLK W203 C209 ensures:

• factory fitment for the vehicle's braking system and electronics,
• maintenance of operating parameters specified by the manufacturer,
• stable cooperation with the ESP system and wheel speed sensors,
• reduction of the risk of controller errors and unwanted dashboard warning messages.

Thanks to this, the installation process is predictable, and the braking system regains its proper operating characteristics. This is particularly important in vehicles where maintaining the original configuration and the integrity of all safety systems is a priority.

Characteristics of the used component

The offered item comes from a Mercedes vehicle and is classified as a used part. Such components are frequently chosen for ABS and ESP system repairs because they allow for a balance between reasonable service costs and the preservation of the original design. A hydraulic module of this type is a particularly attractive solution for older vehicle generations, where the availability of new components may be limited or economically unjustified.

The pump has an assigned OEM part number and corresponding interchangeable numbers, which facilitates clear identification and selection for a specific engine and equipment version. Before purchasing, it is worth comparing the markings with your vehicle's data to ensure full installation and functional compatibility.

Selection and integration with the ABS and ESP system

When replacing the ABS hydraulic pump in a Mercedes-Benz C / CLK W203 C209, it is essential to match the component to the configuration of the braking system and the controller. The offered module comes from the same design group, which allows for maintaining:

• correct pressure distribution in the brake circuits,
• compliance with ABS and ESP system operating algorithms,
• consistent communication with the vehicle's electronic network.

In practice, this translates into predictable vehicle behavior during emergency braking, driving on slippery surfaces, and in situations where the electronic stability control system intervenes in brake operation. A properly selected hydraulic module minimizes the risk of safety system malfunctions.

Support in choosing a used part

For components such as an ABS hydraulic pump, many users consider whether a new or used part is the better solution. To make an informed decision and learn about the differences in costs, durability, and availability of components, it is worth reading the article: Car parts – new or used? We compare costs, quality, and durability. This material helps to assess when choosing a component from the secondary market is technically and economically justified.

Related Mercedes ABS and ESP system components

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 wheel speed sensors, control modules, or pressure lines, check the available parts in the Mercedes ABS and ESP system category.