Mercedes SLK R171 M271 Vacuum Pipe Line Hose Brake Servo Unit A1714301829

Mercedes SLK R171 M271 Vacuum Pipe Line Hose Brake Servo Unit is a specialized vacuum system component that works with the brake servo in Mercedes vehicles equipped with the M271 engine. It is responsible for the stable transmission of vacuum to the brake booster, which translates into predictable pedal response and safe deceleration. Using an OEM component is a sensible choice when servicing the braking system if you value factory-spec hose geometry and proper integration with the servo.

Specifications and technical data

• SKU: rhd-A1714301829
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1714301829
• Substitutable numbers: A1714301829, A 171 430 18 29, KD
• Category: Brake Servos

Purpose and function in the braking system

The vacuum pipe line hose in Mercedes models with the M271 unit operates between the vacuum source and the brake servo. Its task is to:

• maintain the tightness of the vacuum system under varying engine loads,
• ensure adequate brake boosting force throughout the entire operating range,
• stabilize servo operation and provide consistent brake pedal feel.

By maintaining the original shape and internal diameter, the hose supports the correct operating characteristics of the servo, which is important for both driving comfort and safety.

Category: Brake Servos and Pressure Regulators – the role of the vacuum hose

This element belongs to the Brake Servos and Pressure Regulators group, which consists of components responsible for assisting and modulating braking force. In this group, the vacuum hose acts as a connector between the engine and the servo, so its technical condition affects:

• the effectiveness of brake assistance during emergency braking,
• the stability of brake pressure regulators,
• reducing the risk of vacuum loss and increased braking distance.

Choosing an original hose from this category allows you to maintain the factory operating parameters of the braking system without the need for modifications or fitting universal replacements.

Benefits of using a pre-owned OEM hose

A pre-owned vacuum pipe line hose for a Mercedes SLK R171 with an M271 engine is a solution that combines controlled service costs with the design intended by the manufacturer. Key advantages of this choice include:

• factory fitment to the servo and mounting points in the engine bay,
• preservation of the original hose routing, which minimizes the risk of chafing and vibration,
• no need to modify other braking system components.

For workshops and private users, this means easier installation, a predictable repair outcome, and consistency with the remaining elements of the braking system.

Professional selection and integration with the vehicle system

For the vacuum pipe line hose in a Mercedes SLK R171 with an M271 engine to work correctly, it is essential to match it to the specific vehicle configuration. In practice, this means paying attention to:

• compatibility with the installed type of brake servo,
• correct positioning relative to the manifold and other hoses in the engine bay,
• tight connections at the vacuum system ports and fittings.

A system configured in this way allows for maintaining stable vacuum, which translates into predictable brake booster operation under various operating conditions.

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 brake servos, pressure regulators, or additional vacuum hoses, check the available parts in the Mercedes Brake Servos and Pressure Regulators category.

Technical support and operation

When working on the braking and vacuum system, it is worth considering the general condition of the installation in the engine bay, including hoses, fittings, and components working with the servo. Technical materials regarding the selection and operation of components in vehicles with advanced comfort and safety systems may be helpful – you can find them, among others, in the article Air conditioning and heating – part selection and maintenance for year-round comfort, which discusses a practical approach to used OEM components, service procedures, and the most frequently asked user questions.