Audi A4 B7 Petrol Fuel Pump Tank Sender Pump Unit 8E0919051AK

Audi A4 B7 Petrol Fuel Pump Tank Sender Pump Unit is an original component from the Fuel pumps and level sensors group, designed for the petrol engine fuel system in the Audi A4 B7 generation. It ensures stable fuel delivery to the fuel rail, which translates into smooth engine operation and predictable performance.

Specifications and technical data

• SKU: 8E0919051AK
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0919051AK
• Substitutable numbers: 8E0919051AK, 8E0 919 051 AK
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and role in the fuel system

The fuel pump in the Audi A4 B7 is responsible for generating the appropriate pressure in the fuel system and continuously delivering petrol from the tank to the engine. This component works in conjunction with the fuel level sensor, ensuring that the engine control unit and the instrument cluster receive accurate information about the fuel level.

For petrol-powered units, it is crucial to maintain a stable fuel flow across the entire load range – from idling to dynamic acceleration. A functional pump minimizes the risk of ignition misfires, power drops, and starting issues on both warm and cold engines.

Benefits of using an original Audi pump

Choosing a fuel pump from the original Audi component group means maintaining the factory operating parameters of the fuel system. The component is structurally matched to the tank geometry, engine characteristics, and controller calibration, which helps avoid problems typical of generic aftermarket replacements.

• Factory fitment for the Audi A4 B7 fuel system.
• Correct performance characteristics for petrol engines.
• Compatibility with the original fuel level sensor and electrical wiring.
• No need for modifications to the wiring harness or fuel basket.

As a result, installation is straightforward, and after replacement, you can expect predictable vehicle behavior without the need for additional adaptation or software modifications.

Operating characteristics in a petrol engine

In petrol fuel systems, the fuel pump operates continuously, maintaining the pressure required by the injectors. A properly selected component reduces the risk of overheating, cavitation, and excessive noise in the tank. Stable fuel supply helps maintain the correct air-fuel mixture, which influences engine refinement and exhaust emission levels.

A functional fuel pump is particularly important in situations such as:

• frequent driving with a low fuel level in the tank,
• dynamic acceleration and overtaking,
• operation in high ambient temperatures.

Replacing a worn-out component with an original pump from the same design group allows you to restore correct supply parameters without interfering with other system components.

Condition, installation, and selection by part numbers

The offered fuel pump is a pre-owned component, which allows for cost-effective repair while maintaining the original Audi design. This solution is particularly beneficial for older A4 B7 models, where combining reasonable costs with factory specifications is essential.

It is always recommended to confirm the selection of the pump for a specific engine version based on the OEM number or interchangeable part numbers, as well as vehicle data (model, year of manufacture, engine type). This will help you avoid issues with the compatibility of the fuel basket, electrical connectors, or performance characteristics.

To better understand the relationships between the pump, injectors, and fuel tank, and to correctly diagnose symptoms of wear, it is worth referring to our guide: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

If you are considering an informed choice between a used original part and an aftermarket replacement, the following article may be helpful: 5 reasons why a used OEM part is a better choice than a replacement.

Expanding the fuel system in the Audi A4

If you are planning a comprehensive repair or upgrade of the fuel system in your Audi and need other components from the same group, such as additional pumps, power modules, or fuel level sensors, check out the available parts in the Audi fuel pumps and level sensors category.

This approach allows you to organize the key elements responsible for fuel delivery in a single service stage, which reduces the risk of future vehicle downtime and facilitates planning for further operation.