Mercedes-Benz A B Class W169 W245 1 Brake Servo Master Cylinder A1694300330

The Brake Servo with Brake Master Cylinder for Mercedes-Benz A/B Class W169/W245 is an original component of the braking system from the Mercedes group, designed for use on the front axle of the vehicle. This OEM solution ensures proper braking assistance, stable system pressure, and predictable vehicle behavior during intense braking.

Specifications and technical data

• SKU: rhd-A1694301230-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1694301230
• Substitutable numbers: A1694301230, A 169 430 12 30, A1694300330, A 169 430 03 30, A1694300202, A 169 430 02 02, EM
• Category: Brake Servos

Purpose and Role in the Braking System

The presented brake servo, integrated with the master cylinder, is responsible for increasing the force applied to the brake pedal and for precise pressure modulation in the brake circuits. In compact class vehicles, such as the A and B Class, properly functioning brake assistance is crucial for safety, driving stability, and driver comfort.

This component belongs to the category of brake servos and force regulators, meaning it works in conjunction with other braking system sub-assemblies, ensuring appropriate brake force distribution between axles and predictable vehicle response in various road conditions.

Benefits of Using an Original Mercedes Servo

Using an original component from the Mercedes group allows you to maintain the factory operating parameters of the braking system without the need for modifications to the installation. Proper fitment for the specific W169/W245 A/B Class generation minimizes the risk of leaks, incorrect pedal travel, or uneven brake operation.

• maintaining the factory brake pedal characteristics,
• consistency with the original braking system architecture,
• reducing the risk of bleeding and adjustment issues,
• easier diagnostics in the workshop due to compliance with manufacturer documentation.

Additionally, as this part comes from a dismantled vehicle, it offers an attractive cost-effective alternative to new replacements while retaining a design consistent with the vehicle manufacturer's project.

Performance Characteristics and Installation

The servo with the master cylinder is intended for installation in the engine bay, replacing the factory brake booster. The OEM design allows for the use of existing mounting points, hydraulic connections, and the connection to the brake pedal, which simplifies the mechanic's work and reduces replacement time.

During installation, it is recommended to:

• check the tightness of brake lines and connections,
• properly bleed the entire system after installation,
• verify the brake pedal travel and firmness after initial stationary tests.

This approach allows for the full utilization of the installed servo's potential and ensures stable, repeatable brake performance in daily operation.

Condition of Used Part and Selecting the Right Component

The offered item is a used part, sourced from a dismantled vehicle. Such components are often chosen by users seeking a reasonable compromise between repair cost and maintaining the original braking system design. For a brake servo, it is particularly important to select a part that is compatible with the specific engine version and equipment of the vehicle – manufacturer markings and reference numbers available in the product's technical specifications are helpful for this.

If you want to better understand how to safely choose components from the secondary market and what to look for when purchasing, consult our guide: how to wisely buy used car parts and take advantage of the best offers in an automotive store. There you will find practical tips on verifying the condition of parts, planning repairs, and optimizing service costs.

Summary

The Brake Servo with Brake Master Cylinder for Mercedes-Benz A/B Class W169/W245 is a functional, original component of the braking system that restores proper braking assistance and stable system operation. Choosing this part is a way to maintain driving safety at the level intended by the manufacturer, while simultaneously reducing repair costs by using a proven used part.