Mercedes W204 OM651 Diesel Vacuum Pressure Tank Reservoir Bottle A6510700868

The Mercedes W204 Vacuum Reservoir A6510700868 is a component of the vacuum system designed for diesel engines, which stabilizes and stores the vacuum necessary for the operation of many auxiliary units. Thanks to its factory design for Mercedes Diesel engine vehicles, it ensures system coherence and predictable operating parameters. This is a practical solution for users looking for a proven, used component at a reasonable price.

Specifications and technical data

• SKU: A6510701000
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510701000
• Substitutable numbers: A6510701000, A 651 070 10 00, A6510700868, A 651 070 08 68
• Fuel type: Diesel
• Category: Vacuum Pumps

Purpose and Role in the Vacuum System

The vacuum reservoir in Mercedes W204 models works with the vacuum pump, accumulating vacuum and stabilizing its level in the system. This is particularly important in Diesel engines, where vacuum is used, among other things, to control engine accessories and other auxiliary systems.

A properly selected vacuum reservoir helps to:

• maintain a constant vacuum level under varying engine load,
• reduce fluctuations in the vacuum system's operation,
• increase the reliability of vacuum-controlled components.

Design and Fit for Mercedes W204

The presented reservoir is designed as part of the vacuum pumps category, meaning full integration with the factory vacuum system in the Mercedes W204. The shape, port arrangement, and mounting method are adapted to the original engine bay architecture, which facilitates installation and reduces the risk of leaks.

By using a component consistent with the vehicle manufacturer's solutions, you can maintain:

• the correct routing of vacuum lines,
• stable mounting of the reservoir at factory points,
• coherence of the entire vacuum system's operation.

Characteristics of the Used Vacuum Reservoir

The offered part is used, allowing for an economical repair of the vacuum system while maintaining the original specifications. This type of part is a good choice when structural compatibility with the factory solution and quick replacement of a damaged reservoir are priorities.

When installing, it is recommended to:

• check the condition of vacuum lines and connectors,
• verify system tightness after installation,
• diagnose the vacuum pump's operation to rule out other sources of vacuum loss.

Selection by Brand and Category, and Technical Support

If you are looking for other elements from the vacuum pumps category dedicated to this brand, check out the Mercedes vacuum pumps available in our store to select components that are consistent with your car's vacuum system. This helps maintain a uniform specification and reduces compatibility issues.

When planning service work, it is also worth expanding your knowledge of cooperating systems. A detailed discussion of engine supply system components can be found in the article “Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair”, which helps to better understand the relationships between the fuel system and other systems in the car.

Summary of Application in Diesel Engines

The Mercedes W204 Vacuum Reservoir A6510700868 is a practical choice for diesel engine users who want to restore proper vacuum system operation without altering the vehicle's factory design. Using an original solution from the vacuum pumps category promotes stable engine accessory operation and predictable performance parameters, which translates to comfort and safety during daily driving.