Smart 451 ABS Hydraulic Brake Pump Control Unit Module A4514200875

The Smart 451 Hydraulic ABS Brake Booster A4514200875 is an original brake system component from the Mercedes group, designed to work with the anti-lock braking system. This used booster provides a solid foundation for restoring proper ABS function, maintaining factory performance characteristics and vehicle electronics compatibility. It's a practical solution for users looking to preserve high brake functionality at a reasonable service cost.

Specifications and technical data

• SKU: A4514200875
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4514200875
• Substitutable numbers: A4514200875, A 451 420 08 75, 0265950891, 0 265 950 891
• Part type: ABS Hydraulic Unit
• Category: ABS & Stability Hydraulic Units

Purpose and Function in the ABS System

The hydraulic brake booster in the Smart 451 is responsible for generating and modulating pressure in the brake circuits during ABS operation. It works in conjunction with wheel speed sensors and the control unit to limit skidding and improve vehicle stability during emergency braking situations. Using an original component ensures the correct operating parameters for the entire system are maintained.

This part belongs to the ABS and ESP System group, meaning it's an integral part of the systems responsible for traction and stability control. A correctly selected booster supports even distribution of braking forces, leading to predictable vehicle behavior on wet, slippery, or uneven surfaces.

Benefits of Using an Original Mercedes Booster

Using a component branded by Mercedes ensures:

• Preservation of the ABS system's factory performance characteristics,
• Compatibility with the vehicle's control unit software and electrical architecture,
• Proper mechanical fit for mounting points and brake lines,
• The ability to utilize the existing vehicle configuration without additional modifications.

This allows for an organized installation process and minimizes the risk of compatibility issues. This is particularly important for safety-critical components where stable operating parameters are paramount.

Characteristics of the Used Component

The offered booster is a used part, sourced from disassembly, which significantly reduces repair costs compared to new parts. When correctly matched to the specific vehicle version, it offers an effective alternative to expensive, low-quality aftermarket replacements. Users planning a more extensive vehicle upgrade using original used parts may also find advice in the article on selecting used, original Mercedes parts from disassembly.

Prior to installation, standard brake system verification, bleeding the system, and computer diagnostics are recommended to confirm proper communication between the booster and the vehicle's electronics. This approach minimizes the risk of further system intervention and allows for quicker restoration of full ABS functionality.

Selection and Vehicle Integration

To correctly select the Smart 451 Hydraulic ABS Brake Booster A4514200875 for a specific vehicle, pay attention to:

• Compatibility with the vehicle's body style and year,
• The configuration of safety systems (ABS, ESP),
• The type of control unit and wiring harness used.

Proper selection ensures seamless integration with the existing system and reduces the need for additional adaptations. If you have doubts about compatibility, comparing the product's technical specifications with your vehicle's data or consulting a Mercedes specialist service can be helpful.

Summary

The Smart 451 Hydraulic ABS Brake Booster A4514200875 is a practical solution for users seeking an original, used ABS component at a reasonable price. A correctly selected and installed booster can restore proper anti-lock braking system function, enhancing braking stability and safety in daily vehicle operation.