Brake Servo Mercedes W221 Booster Master Cylinder Control Unit A2214303230

Brake Servo Mercedes W221 Booster Master Cylinder Control Unit is an advanced brake servo integrated with the master cylinder and control unit, designed for high-class braking systems. This OEM solution ensures stable system pressure, precise braking force modulation, and seamless integration with the vehicle's electronics, resulting in safer and more predictable vehicle behavior on the road.

Specifications and technical data

• SKU: A2214303230
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2214303230
• Substitutable numbers: A2214303230, A 221 430 32 30, A2214304330, A 221 430 43 30, A2214300601, A 221 430 06 01, A2214300002, A 221 430 00 02, KZ
• Category: Brake Servos

Purpose and function in the braking system

The offered brake servo with brake force regulator is designed specifically for the Mercedes S-Class W221 generation models. This component is responsible for amplifying the force applied to the brake pedal and working in tandem with the vehicle's electronic system, allowing for consistent, predictable brake response in various road conditions.

Integration with the brake system control unit enables interaction with safety systems such as ABS and ESP, ensuring consistent pressure management in the brake circuits. As a result, the driver receives clear pedal feedback and stable vehicle behavior during emergency braking.

Design and construction advantages

The brake servo in this solution works directly with the master cylinder and control module, forming a compact assembly mounted in the engine bay. This configuration:

• reduces the number of hydraulic connections,
• facilitates diagnostics and maintenance,
• ensures consistent performance parameters for the entire braking system.

As an item from the Brake Servos and Regulators category, the product has been developed to maintain the vehicle's factory characteristics – both in terms of pedal feel comfort and braking efficiency under various vehicle loads.

Condition, origin, and benefits of installation

The offered item is an original Mercedes part from dismantling, which ensures the preservation of factory geometry, mounting points, and compatibility with the vehicle's hydraulic and electrical installation. Unlike universal aftermarket replacements, using an OEM component minimizes the risk of fitment issues and reduces the need for installation modifications.

Choosing a used, original brake servo with a force regulator is a cost-effective solution while maintaining performance parameters close to factory specifications. This is particularly important in premium class vehicles, where the braking system is tightly integrated with the body electronics and safety systems.

Selection and vehicle compatibility

Due to the presence of a control unit in the servo assembly, it is crucial to match the part to the specific equipment version and model year of the vehicle. The product has a dedicated OEM number and associated interchangeable numbers, which facilitates verification of compatibility with a specific Mercedes W221 unit. Before purchasing, it is recommended to compare the markings with the currently installed component or seek professional assistance.

To maximize the potential of the braking system, installation in a specialized workshop equipped with the proper tools for system bleeding and electronic diagnostics is recommended. A correctly installed brake servo and force regulator assembly restores full system functionality and the stability of driver assistance systems.

Brake system expansion and additional resources

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 master cylinders, brake force regulators, or additional assistance modules, check the available parts in the Mercedes Brake Servos and Regulators category.

To extend the trouble-free operation of such dismantled components, it is worth learning good practices regarding cleaning, corrosion protection, and proper installation. Practical tips can be found in the article How to extend the life of used car parts?, which describes proven methods for maintaining mechanical and electronic components.