Mercedes-Benz E-Class S210 W210 ABS ESP Hydraulic Brake Pump Unit A0044314912

Mercedes-Benz E-Class S210 W210 ABS ESP Hydraulic Brake Pump Unit is a specialized component from the ABS and ESP system group, designed for precise pressure control in the braking system and integration with electronic stability control systems. This original used Mercedes component allows for maintaining factory performance parameters of both electronics and hydraulics, which translates into predictable vehicle behavior during emergency braking and on slippery surfaces.

Specifications and technical data

• SKU: A0044314912
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0044314912
• Substitutable numbers: A0044314912, A 004 431 49 12, A0044314812, A 004 431 48 12, A0044311412, A 004 431 14 12
• Category: ABS & Stability Hydraulic Units

Purpose and function in the braking system

The described ABS ESP hydraulic brake pump is a key module responsible for generating and modulating pressure in the brake circuits, integrated with anti-lock braking and electronic stability control systems. In S210 and W210 series vehicles, it works in conjunction with wheel speed sensors and the control unit, enabling dynamic distribution of braking force to individual wheels, which reduces slippage and improves vehicle control.

By maintaining the original hydraulic and electronic architecture, the pump ensures compatibility with the vehicle's factory software, minimizing the risk of ABS/ESP system errors and unwanted warning messages on the instrument cluster.

Benefits of using an original Mercedes component

Using an original brake pump in Mercedes vehicles allows for maintaining the consistency of the entire braking system with the manufacturer's design. This means:

• proper cooperation with the existing hydraulic and electrical installation,
• correct pressure characteristics in the brake circuits,
• stable operation of ABS and ESP systems across a wide range of road conditions.

A used component of this class is an attractive solution for users who want to restore full functionality of the braking system while maintaining a favorable cost-to-quality ratio. Original fitment reduces the need for installation modifications and shortens assembly time compared to universal solutions.

Professional selection and installation in S210 / W210 vehicles

When selecting an ABS ESP brake pump for a specific Mercedes configuration, it is important to pay attention to compatibility with the vehicle's equipment (presence of ESP, type of braking system, body version). The product features dedicated factory markings and interchangeable part numbers, which facilitates verification of compatibility with a specific car during the ordering and installation process.

A properly selected pump enables:

• restoration of full functionality of active safety systems,
• reduction of the risk of uneven braking and extended braking distance,
• maintenance of vehicle stability during sudden braking and evasive maneuvers.

For optimal results, installation in a specialized workshop equipped with the appropriate tools for bleeding the system and diagnosing ABS/ESP systems is recommended.

ABS and ESP systems in practice – safety and diagnostics

A functional ABS ESP brake pump has a direct impact on driving safety, especially in emergency situations. Symptoms such as a hard brake pedal, uneven ABS operation, or warning lights on the dashboard may indicate the need to verify this component. Replacing it with a functional component from the ABS and ESP system group restores the proper cooperation between hydraulics and control electronics.

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

How to safely buy used braking system components

When choosing a used ABS ESP brake pump, it is worth paying attention to the origin of the part, the consistency of markings with vehicle documentation, and the possibility of diagnostics after installation. It is also good practice to compare the external condition and connectors with the currently installed element, which helps avoid installation errors.

To better prepare for your purchase and evaluate what to look for when choosing used braking system components, check out our guide: Second-hand braking system: how to safely choose discs, calipers, and ABS?. Additional information on the cost-effectiveness of using original, replacement, and used parts in the context of costs and fitment is provided in the article Original, replacement, or used – which car parts are the most cost-effective?.