Audi A4 B7 B8 Q7 4L Vacuum Pump Diesel Engine 057145100AF

Audi A4 B7 B8 Q7 4L Vacuum Pump Diesel Engine is a specialized component from the Vacuum pumps category, designed for Audi diesel engines. It ensures stable generation of the vacuum necessary for the proper operation of auxiliary systems, which translates into predictable vehicle performance and safe operation.

Specifications and technical data

• SKU: 057145100AF
• Mark: Audi
• Condition: Used
• OEM Part Number: 057145100AF
• Substitutable numbers: 057145100AF, 057 145 100 AF
• Fuel type: Diesel
• Category: Vacuum Pumps

Purpose and function in the diesel system

The described vacuum pump is dedicated to Diesel units in Audi A4 B7 and B8 generation models as well as the Audi Q7 4L. In diesel engines, it is responsible for generating the vacuum used by, among others, the braking system, engine control components, and selected vacuum actuators. A stable vacuum means more predictable vehicle response to driver inputs and proper cooperation with control electronics.

Construction and technical characteristics

The pump belongs to the Vacuum pumps group, which means it has been designed for continuous operation in the demanding environment of the engine bay. The construction is adapted to the loads typical for diesel units, where vacuum generation cannot be easily achieved via the intake manifold. The use of a vacuum solution allows for maintaining an appropriate vacuum level regardless of the current engine load.

Thanks to the factory design tailored to specific Audi models, the pump works with original connectors, hoses, and mounts, which facilitates installation and reduces the risk of leaks. This solution is particularly beneficial for servicing intensively used vehicles, where the repeatability of operating parameters is crucial.

Benefits of using an original vacuum pump

Using a dedicated vacuum pump in an Audi diesel engine brings a number of practical benefits:

• Consistency with the braking system – a properly functioning pump supports stable operation of the brake booster, which affects the consistent feel of the brake pedal.
• Proper cooperation with engine accessories – vacuum-controlled systems (e.g., selected valves or actuators) receive the appropriate operating conditions.
• Reduction of diagnostic problems – using a component that is structurally compliant with the factory design reduces the risk of errors related to an incorrect vacuum level.
• Better operational predictability – stable vacuum system operating parameters translate into more uniform vehicle behavior during daily driving.

Condition, origin, and service application

The offered pump comes from dismantling and is an original Audi brand component, which is important for maintaining compliance with factory design assumptions. This type of used part is often chosen for repairs where fitment to a specific model and maintaining operating parameters close to factory specifications are important, while simultaneously optimizing service costs.

It works well both for typical replacement of a worn pump and for broader service work within the diesel engine, when it is necessary to restore the proper operation of the vacuum system after a failure or long-term operation.

Technical support and selection by numbers

The vacuum pump is a component whose selection should take into account the manufacturer's markings and the specifics of the power unit. In workshop practice, part numbers and interchangeable numbers are often used to ensure that the installed component will be fully compatible with the given diesel engine and its accessories.

If you want to better understand the relationships between pumps, injectors, and the fuel tank, as well as the importance of proper component selection based on manufacturer markings, the following article will be helpful: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. You will find practical tips there regarding diagnostics, regeneration, and operation of components in diesel engines.

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as additional pumps, vacuum hoses, or mounting elements, check the available parts in the Audi Vacuum pumps category.