Mercedes W176 ABS Pump Brakes Hydraulic Pump Unit A45 AMG M133 A1764310200

Mercedes W176 ABS Pump Brakes Hydraulic Pump Unit A45 AMG M133 is a specialized component from the ABS and ESP system group, designed for the advanced, sports variant of the A-Class. The hydraulic ABS pump is responsible for precise pressure control in the braking system, which translates into stable vehicle behavior during intensive braking and dynamic driving.

Specifications and technical data

• SKU: A1764310200
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1764310200
• Substitutable numbers: A1764310200, A 176 431 02 00, A1764310300, A 176 431 03 00
• Category: ABS & Stability Hydraulic Units

Purpose and function in the braking system

The described ABS pump has been designed for the demanding A45 AMG model with the M133 engine, where the braking system operates under high load. The hydraulic ABS module stabilizes pressure in the brake lines, supporting traction control and electronic stability programs. As a result, the car maintains predictable handling on both dry and wet surfaces, and the driver receives consistent, repeatable feedback from the brake pedal.

Benefits of using an original Mercedes component

Choosing a component from the Mercedes group means maintaining the factory operating characteristics of the ABS and ESP system. The original hydraulic pump is matched to the parameters of the M133 unit, control maps, and electronic calibration, which minimizes the risk of system errors and unwanted dashboard warnings. Using the correct module allows for full integration with other vehicle safety systems, such as traction control or stability assist.

Condition, selection, and installation aspects

The item comes from a used vehicle, which in practice means a favorable compromise between cost and maintaining the manufacturer's original specifications. Before installation, a standard workshop procedure is recommended: checking the tightness of connections, verifying electrical sockets, and bleeding the braking system in accordance with the service procedure for the A45 AMG. A correctly selected ABS pump reduces the need for adaptation and allows for the efficient restoration of full braking system functionality.

Safety, diagnostics, and electronic integration

The hydraulic ABS pump in this model works with wheel speed sensors and the stability system controller, which enables precise dosing of braking pressure on individual wheels. In the case of symptoms such as brake pedal pulsation, increased braking distance, or ABS/ESP error messages, replacing the hydraulic module is one of the key diagnostic steps. To maintain the consistency of the entire drivetrain and braking system, it is also worth checking the guide on selecting components that work with the drivetrain, available in the article Clutch and dual-mass flywheel – diagnostics and selection of drivetrain parts.

Expanding ABS and ESP system upgrades

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 signal cables, check the available parts in the Mercedes ABS and ESP system category.

For drivers who are planning a broader vehicle service and want to approach the replacement of wear-and-tear parts consciously, a practical guide on the most frequently replaced components in a car may also be helpful: TOP 10 most frequently replaced parts in your car. This makes it easier to plan service work so that the combination of the new ABS pump with other components is consistent and economically justified.