Mercedes-Benz C-Class W203 CL203 C209 Brake Servo Vacuum Hose Pipe A2034301529

Mercedes-Benz C-Class W203 CL203 C209 Brake Servo Vacuum Hose Pipe is an original brake system component, designed specifically for C-Class models and related coupés. Thanks to its factory geometry and precise fitment to the brake servo, it ensures stable brake assistance and predictable brake pedal response, which translates into safe and comfortable vehicle operation.

Specifications and technical data

• SKU: rhd-A2034301529
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2034301529
• Substitutable numbers: A2034301529, A 203 430 15 29, KZ
• Category: Brake Servos

Purpose and function in the brake system

This vacuum hose is responsible for transferring vacuum from the intake system to the brake servo in Mercedes C-Class W203 generation cars, as well as in the CL203 and C209 body versions. A properly functioning hose ensures that the servo receives the correct vacuum, which enables effective assistance of the brake pedal pressure and reduces driver effort during braking.

This element is part of the Brake Servos and Pressure Regulators group; therefore, its tightness and proper routing in the engine compartment have a direct impact on the efficiency of the entire braking system, especially during emergency braking and when driving under full load.

Construction and fitment for Mercedes-Benz

The hose has been developed by the manufacturer with the specific engine compartment architecture of the Mercedes-Benz C-Class W203, CL203, and C209 models in mind. This means:

• factory fitment to the brake servo ports and the vacuum source,
• appropriately selected hose stiffness and flexibility,
• routing consistent with the original layout in the engine compartment, which minimizes the risk of chafing and kinking.

As a result, installation is orderly, and the hose does not interfere with other systems, which is important both from a safety perspective and for future maintenance.

Benefits of using an original vacuum hose

Using an original brake servo vacuum hose in a Mercedes-Benz provides a number of practical operational benefits:

• Stable brake assistance – maintaining factory servo operating parameters, without delays or fluctuations in braking force.
• Better vehicle control – predictable brake pedal characteristics facilitate precise modulation of braking force.
• Reduced risk of leaks – the hose construction is adapted to the thermal and mechanical conditions prevailing in the engine compartment.
• Consistency with other system components – the hose works with the factory servo and brake pressure regulator, which facilitates diagnostics and service.

Component condition and use in service practice

The offered vacuum hose comes from the group of used original Mercedes parts, which allows for an economical yet technically correct repair of the brake system. This type of component is particularly useful for:

• resolving issues with a hard brake pedal resulting from vacuum loss,
• repairs after collisions, when equipment in the engine compartment has been damaged,
• preventive maintenance in older vehicles, where rubber and plastic hoses are prone to material aging.

Selecting the original hose for a specific body and engine version is facilitated by identification via the OEM part number and interchangeable numbers available in the product technical specification.

System expansion – Mercedes Brake Servos and Pressure Regulators

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

Technical support and selection of used parts

When working with the brake system and vacuum components, it is worth following service procedures in accordance with the manufacturer's recommendations and selecting components based on OEM markings. Additional tips regarding the selection of used components, their inspection, and maintenance principles for systems in the engine compartment can be found in the article: Air conditioning and heating – part selection and maintenance for year-round comfort, which discusses a practical approach to the operation of original components in vehicles of various brands.