Vacuum Pipe Mercedes W177 W247 OM654 Line Hose Brake Booster Servo A1774300500

The Mercedes W177 W247 OM654 Brake Servo Hose Line is an original component of the brake vacuum system, designed for Mercedes compact models with the OM654 engine. Thanks to its factory design, it ensures stable brake servo supply, which translates to predictable pedal response and safe speed reduction.

Specifications and technical data

• SKU: A1774300500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1774300500
• Substitutable numbers: A1774300500, A 177 430 05 00
• Category: Brake Hoses, Lines & Fittings

As part of the Brake Hoses, Lines, and Connectors group, this hose has been designed for proper sealing, resistance to vacuum, and precise fit to the engine bay geometry, facilitating installation and reducing the risk of leaks in the system.

The offered part is used, allowing for an economical repair while maintaining the original manufacturer's specifications, which are particularly important in the precise braking system of modern Mercedes vehicles.

Function and Role of the Brake Servo Hose

The brake servo hose in Mercedes W177 and W247 models with the OM654 engine is responsible for transmitting stable vacuum from the engine to the servo. A properly functioning component:

• ensures assistance for brake pedal force,
• maintains the vacuum system's seal,
• reduces the risk of extended braking distances during sudden braking,
• minimizes loss of assistance with repeated pedal presses.

Selecting an original hose is particularly crucial in modern systems where the routing geometry and internal diameters are precisely matched to the characteristics of the servo and vacuum pump.

Compatibility with W177 / W247 Platform and OM654 Engine

The hose in question has been specifically designed for the W177 and W247 body architecture and the OM654 engine powertrain. This means:

• appropriate routing in the engine bay without stress or kinks,
• factory mounting points for standard brackets,
• compatibility with the original brake servo and vacuum source.

Such a precise fit reduces installation time, simplifies workshop operations, and lowers the risk of subsequent issues with leaks or the hose rubbing against other components.

Benefits of Using an Original, Used Part

Using an original Mercedes brake servo hose in a used condition offers a sensible compromise between cost and quality. This type of part:

• maintains factory flow and sealing parameters,
• is structurally compliant with the vehicle manufacturer's requirements,
• allows for reduced repair costs compared to a new part,
• ensures predictable braking system behavior after installation.

For workshops and users who consciously choose recycled parts, this is a practical solution that maintains the integrity of the entire braking system without experimenting with aftermarket parts of uncertain specifications.

Professional Selection and Installation

To fully utilize the potential of this hose, it is advisable to ensure proper brake system diagnostics and check other vacuum components. It is recommended to:

• inspect the brake servo's condition and the tightness of connections,
• verify vacuum lines in adjacent circuits,
• check mountings and brackets to avoid vibrations and chafing.

When selecting parts, it is helpful to use OEM numbers and interchangeable numbers, which minimizes the risk of errors and speeds up the service process.

If you are planning a comprehensive repair or upgrade of the braking area in your Mercedes and need other parts from the same group, such as flexible hoses, rigid pipes, or vacuum connectors, check the available parts in the Mercedes Brake Hoses, Lines, and Connectors category.

Technical Support and Safe Choice of Used Parts

When working with the braking system, it is beneficial to use reliable sources of knowledge regarding the selection and operation of recycled components. Practical tips for choosing original brake components can be found in the article Brake Calipers Under the Magnifying Glass: How to Effectively Reduce Brake System Repair Costs by Choosing Proven Recycled Parts, which discusses, among other things, safety, cost-effectiveness, and correct part identification.

If you want to learn more about the principles of safely buying used car parts online – from verifying the seller to selecting by OEM number – the guide Safe Online Purchase of Used Car Parts – A Step-by-Step Guide, prepared for both drivers and professional workshops, will be helpful.