Mercedes Citan W415 Brake Vacuum Hose Servo Booster Line Pipe 474019492R

Mercedes Citan W415 Brake Vacuum Hose Servo Booster Line Pipe is an original brake system component designed for use with diesel engines. It ensures a stable vacuum supply to the brake booster, which translates into predictable, comfortable, and safe brake assistance during daily operation.

Specifications and technical data

• SKU: 474019492R
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: 474019492R
• Substitutable numbers: 474019492R, 474 019 492 R
• Fuel type: Diesel
• Category: Brake Servos

Purpose and function in the brake system

The offered vacuum hose is a component from the Brake Boosters and Proportioning Valves group, responsible for transporting vacuum from the pump or intake manifold to the brake booster. In diesel vehicles, a properly functioning vacuum line is crucial for:

• maintaining stable brake pedal assistance force,
• consistent brake system response under various load conditions,
• reducing the risk of a hard brake pedal during emergency braking.

Being dedicated to the Mercedes Citan W415 model allows for maintaining the factory hose routing geometry, which facilitates trouble-free installation and proper placement in the engine bay.

Benefits of using an original vacuum hose

Using an original hose in the brake vacuum system has a direct impact on durability and operational safety. The most important advantages include:

• Factory fitment for the Mercedes Citan W415 brake system, with no need for modifications or adapters.
• Properly selected hose diameter and rigidity, ensuring stable vacuum flow parameters.
• Compatibility with the diesel system, where vacuum generation occurs under specific engine operating conditions.
• Consistency with other brake booster and proportioning valve components, which simplifies diagnostics and service.

As a result, this hose is a practical solution for both routine repairs and comprehensive brake system maintenance in commercial vehicles.

Condition, installation, and service application

The item is sourced from disassembly and is offered as a used OEM component, which allows for combining an attractive price with the manufacturer's original specifications. This type of hose is particularly suitable in situations where:

• the existing vacuum line shows leaks or signs of wear,
• hose replacement is necessary after engine bay work,
• a solution consistent with the factory Mercedes configuration is required.

During installation, it is recommended to check the condition of the ports, connectors, and the brake booster itself to fully utilize the potential of the newly installed hose and avoid secondary leaks in the system.

Expanding Mercedes brake system service

If you are planning a comprehensive repair or upgrade of the braking area in your Mercedes and need other components from the same group, such as vacuum hoses, booster parts, or proportioning valves, check the available parts in the Mercedes Brake Boosters and Proportioning Valves category.

For users who are simultaneously servicing other vehicle systems, the guide on selecting and maintaining thermal comfort components may be helpful – detailed tips can be found in the article Air conditioning and heating – part selection and maintenance for year-round comfort, where practical aspects of working with used OEM components are discussed.