Mercedes W177 W247 AMG Vacuum Pipe Line Hose Brake Booster Servo A1774300300

Mercedes W177 W247 AMG Vacuum Pipe Line Hose Brake Booster Servo is an original brake system component designed for the Mercedes compact class model family. As part of the Brake hoses, lines and connectors group, it is responsible for the stable supply of vacuum to the brake booster, which translates into predictable brake assist performance and comfortable pedal pressure. This used OEM component is a sensible choice for users looking for factory fitment and proven construction at an attractive price.

Specifications and technical data

• SKU: A1774300300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1774300300
• Substitutable numbers: A1774300300, A 177 430 03 00
• Category: Brake Hoses, Lines & Fittings

Function and role in the brake system

The vacuum pipe for the brake booster in the AMG version plays a key role in the braking assistance area. It is responsible for:

• transferring vacuum from the supply system to the brake booster,
• maintaining a stable level of assistance under various engine loads,
• reducing the loss of braking efficiency during dynamic driving.

Thanks to its factory geometry and internal diameter, the pipe ensures proper flow of the working medium, which translates into repeatable brake pedal characteristics and predictable vehicle response.

Construction and fitment for Mercedes W177 / W247 AMG

The original brake booster hose was designed specifically for the engine bay architecture of the Mercedes W177 and W247 models in AMG versions. This means:

• precise fitment of length and shape to factory mounting points,
• maintaining the appropriate bending radius, minimizing material stress,
• compatibility with standard booster ports and vacuum sources.

Such a solution reduces the risk of leaks, twisting, or rubbing against adjacent components, which is particularly important in the tightly packed engine bay of AMG versions.

Benefits of using an original vacuum pipe

Using an original brake booster vacuum pipe instead of a universal part or an unreliable replacement brings a number of practical benefits:

• factory fitment with the brake system and bodywork,
• maintaining the assistance characteristics designed by the manufacturer,
• reducing the risk of micro-leaks affecting the booster's operation,
• easier diagnostics of potential faults in the future.

The used OEM component allows for maintaining the consistency of the entire brake system, which is important for both safety and driving comfort in Mercedes cars with the AMG package.

Condition, purpose and service application

The pipe is offered as a used part, which makes it an attractive solution for budget repairs while retaining the advantages of the original design. It is particularly useful in situations where:

• the existing hose shows signs of wear, cracking, or delamination,
• there are problems with a hard brake pedal or unstable assistance,
• replacement of the component is necessary after engine bay work or a collision.

By maintaining factory mounting parameters, the pipe facilitates service work and allows for the efficient restoration of proper brake system operation.

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 flexible hoses, rigid lines, or service connectors, check out the available parts in the Mercedes brake hoses, lines and connectors category.

Safety, economy and technical knowledge

When working with the brake system, it is crucial to maintain high assembly standards and use proven components. Choosing a used, original vacuum pipe fits into the strategy of rational service cost reduction while maintaining factory-quality solutions. If you want to better understand how to safely use recycled parts within the brake system and how to assess their technical condition, read the article Brake calipers under the microscope: How to effectively reduce brake system repair costs by choosing proven recycled parts.