Audi A4 B8 A5 8T 2.0 TDI Diesel Vacuum Reservoir Bottle Tank 054129808

The Audi A4 B8 2.0 TDI Vacuum Tank is a component of the vacuum system from the vacuum pumps group, designed for 2.0 TDI diesel engines in the Audi A4 B8 generation. It is responsible for stable vacuum storage, which supports the proper operation of vacuum-controlled systems in the diesel unit and improves the driving comfort of the entire powertrain.

Specifications and technical data

• SKU: 054129808
• Mark: Audi
• Condition: Used
• OEM Part Number: 054129808
• Substitutable numbers: 054129808, 054 129 808
• Fuel type: Diesel
• Category: Vacuum Pumps

Purpose and Role in the Vacuum System

The Audi A4 B8 2.0 TDI vacuum tank works with the vacuum pump, creating a vacuum reservoir essential for the operation of pneumatically controlled components in the diesel engine. This reduces pressure fluctuations, stabilizes actuator operation, and helps maintain the correct operating parameters of the engine unit.

In compression-ignition engines, where vacuum is generated by a dedicated pump, a properly selected vacuum tank is important for:

• maintaining vacuum reserve under varying engine load,
• efficient operation of vacuum-controlled components,
• reducing the risk of vacuum system performance drops.

Category: Audi Vacuum Pumps – Diesel System Compatibility

The presented component belongs to the vacuum pumps category, meaning it is designed to work with the vacuum generation and storage system in a diesel engine. Its use in a diesel powertrain requires resistance to operating conditions characteristic of this type of engine, including variable temperatures and vibrations.

If you are looking for other components from the vacuum pumps category dedicated to this brand, check out the Audi vacuum pumps available in our store to complete the entire vacuum system in your car.

Condition, Origin, and Benefits of Choosing a Used Part

The offered vacuum tank is a part from the group of used Audi components. These types of elements are sourced from dismantled vehicles and are chosen as an economical alternative to new components, while maintaining the functionality required for everyday use. For vacuum tanks, maintaining tightness and the correct geometry of the connection spigots is crucial, allowing for seamless integration into the existing system.

When choosing a used vacuum tank, it is worth paying attention to:

• compatibility with the specific diesel engine version,
• compatibility with the vacuum pump system in the given model,
• possibility of mounting in factory mounting points.

More practical tips on making informed choices about second-hand parts can be found in the guide Used Parts – Your Guide to the Best Offers in an Automotive Store, which helps assess the profitability of a purchase and ensure component durability.

Selection for the Fuel and Vacuum System in a Diesel Engine

In modern diesel units, the vacuum system works in conjunction with the fuel system and engine control systems. A correctly selected vacuum tank supports stable operation of the auxiliary equipment, which translates into predictable performance of the engine unit under various load conditions.

If you want to better understand the relationships between the fuel system and accompanying components, such as pumps and tanks, the article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair will be helpful, where you will find a discussion on diagnostics, selection by manufacturer's markings, and operating principles.

Summary – When to Replace the Audi A4 B8 2.0 TDI Vacuum Tank

The Audi A4 B8 2.0 TDI Vacuum Tank is a practical solution for users who want to restore proper operation of the vacuum system in their diesel engine without incurring the cost of purchasing a new component. Replacing the tank is recommended when symptoms such as unstable operation of vacuum-controlled elements or problems with maintaining adequate vacuum in the system occur. By choosing this component, you gain an Audi-compatible part from the vacuum pumps category, which allows for the efficient restoration of the system's factory functionality.