Vacuum Line Mercedes W205 W221 W906 Diesel OM651 Pressure Hose A6510703432

Mercedes W205 W221 W906 Diesel OM651 Vacuum Hose is a specialized component of the vacuum control system in OM651 diesel engines. It is responsible for the stable transmission of vacuum to the actuators, which directly impacts the proper functioning of engine accessories and driving comfort. Thanks to its factory design for Mercedes W205, W221, and W906 models, it ensures precise fitment and predictable system behavior.

Specifications and technical data

• SKU: A6510703432
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510703432
• Substitutable numbers: A6510703432, A 651 070 34 32
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and Function in the Vacuum System

The vacuum hose for the OM651 diesel engine is responsible for transporting vacuum between the pump and receivers, such as actuators or control valves. In diesel engines, correct pressure in this circuit is crucial for:

• stable operation of vacuum-controlled systems,
• proper response of engine accessories to load,
• maintaining optimal engine operating parameters.

Thanks to its design tailored to the OM651 engine architecture, the hose maintains the correct routing geometry, which reduces the risk of kinks and flow restrictions.

Compatibility with Mercedes Models

This component has been designed for Mercedes C-Class W205 generation, S-Class W221 generation, and W906 vans equipped with the OM651 diesel engine. This means that the connection geometry, length, and hose routing are adapted to the factory component layout in the engine bay of these vehicles.

This precise fitment translates to:

• easier installation without the need for modifications,
• maintaining the original hose routing,
• consistency with the factory vacuum system design.

Performance Characteristics and Benefits of Use

As a component in the Hoses, Tubes, and Pipes category, this vacuum hose has been developed for operation in the engine bay environment, where variable temperatures, vibrations, and contact with operating fluid vapors occur. The hose's design is focused on:

• resistance to the elevated temperatures typical of diesel engines,
• vacuum system sealing during long-term operation,
• dimensional stability to reduce the risk of leaks at connections.

Using an original solution for the OM651 engine helps maintain proper vacuum control system parameters, which can lead to more predictable vehicle behavior in daily use.

Component Condition and Installation Aspects

The offered hose is a used component, which means it comes from a dismantled vehicle and may show signs of previous use while maintaining the functionality required for further operation. This type of solution is often chosen as a technically sound alternative to new parts, especially for vehicles used intensively or with higher mileage.

During installation, it is recommended to:

• inspect the condition of the connection ports on the vehicle,
• check the system for leaks after installation,
• follow the appropriate service procedures for the OM651 engine.

Technical Support and Additional Materials

If you are planning a more extensive upgrade or repair of the vacuum system in your Mercedes diesel vehicle and want to better understand the relationships between accessories and the engine, a practical guide on selecting engine components may be helpful – check out the article How to Buy a Used Car Engine and Avoid Pitfalls – A Step-by-Step Guide, which discusses key aspects of assessing component condition.

If you are considering replacing multiple vacuum system components in your Mercedes and want to maintain consistency in the solutions used, check out the available parts in the Mercedes Hoses, Tubes, and Pipes category.