Mercedes W204 Hydraulic Pump ABS Brake Control Unit Module A1729014100

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes W204 Hydraulic Pump ABS Brake Control Unit Module is a component from the ABS and ESP System group, designed for Mercedes vehicles, ensuring stable operation of the braking system and effective support for the ABS system. This used OEM part is a solution for users looking for a technically matched component that will restore the proper functioning of the safety system without the need for an expensive purchase of a new module. Thanks to its factory design, the pump works with the vehicle's electronics in accordance with the manufacturer's specifications.

Specifications and technical data

• SKU: A1724314312
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1724314312
• Substitutable numbers: A1724314312, A 172 431 43 12, A1729014100, A 172 901 41 00
• Category: ABS & Stability Hydraulic Units

Purpose and function in the braking system

The Mercedes W204 Hydraulic Pump ABS Brake Control Unit Module is responsible for generating and modulating pressure in the brake circuits, working in conjunction with wheel speed sensors and the ABS/ESP system controller. A correctly selected component allows for:

• maintaining stable pressure in the brake circuit during emergency braking,
• cooperation with the anti-lock braking system,
• maintaining predictable brake pedal characteristics,
• consistent operation with the factory controller software.

Benefits of using an original Mercedes ABS pump

Using an original component from the ABS and ESP System group in a Mercedes W204 reduces the risk of compatibility issues that often arise with aftermarket parts of uncertain origin. The factory brake pump ensures:

• proper fitment to lines and body mounts,
• correct cooperation with sensors and the control module,
• preservation of factory operating parameters for ABS and ESP systems,
• easier diagnostics in the event of any malfunctions.

For users who want to further verify the compatibility of the part with a specific equipment version, a guide on selecting components by manufacturer numbers will be helpful – you can find it in the article Online parts shopping without risk – 5 proven ways to verify component compatibility using OEM numbers and paint codes.

Condition, selection, and installation aspects

The offered ABS pump is in used condition, which allows for economical repair while maintaining the factory design. Before installation, a standard service procedure is recommended, including checking the system for leaks, bleeding the circuits, and verifying proper communication with the control module after connecting a diagnostic tester.

To select the correct unit for a specific body and engine version, it is worth using the OEM part number and available interchangeable numbers, and then comparing them with the vehicle data. Verification by numbers helps avoid installation problems and potential errors in the operation of the ABS/ESP system.

Application in service practice

Replacing the Mercedes W204 Hydraulic Pump ABS Brake Control Unit Module is a typical service operation performed in cases of:

• faults related to the inability to build pressure in the system,
• ABS/ESP system error messages related to the hydraulic module,
• mechanical damage to the housing or connections,
• system modernization after a collision or major brake repair.

Choosing a used OEM component is particularly beneficial for repairing vehicles that are used intensively, where a reasonable cost is important while maintaining the proper operation of safety systems.

If you are planning a comprehensive repair or modernization of the braking zone in your Mercedes and need other elements from the same group, such as control modules, wheel speed sensors, or pressure lines, check the available parts in the ABS and ESP System Mercedes category.