Audi A4 S4 B7 Fuel Tank Pump Sender Delivery Unit 1.8T 4.2 Quattro 8E0919051BM

Audi A4 S4 B7 Fuel Tank Pump Sender Delivery Unit is an original fuel supply system component designed for 1.8T and 4.2 engines. It ensures precise fuel delivery to the engine and reliable fuel level readings in the tank, which is crucial for stable engine operation and the correct functioning of the fuel gauge on the instrument cluster. Thanks to the factory Audi design, this component is perfectly matched to the tank geometry and the specifics of the Quattro drivetrain, facilitating installation and subsequent operation.

Specifications and technical data

• SKU: 8E0919051BM
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0919051BM
• Substitutable numbers: 8E0919051BM, 8E0 919 051 BM
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The described unit combines the functions of a fuel pump and a fuel level sender, creating a complete module mounted inside the fuel tank. In Audi A4 and S4 B7 generation vehicles with Quattro all-wheel drive, it is responsible for:

• pumping gasoline at the appropriate pressure to the fuel rail,
• stable engine fueling across the entire load range,
• continuous fuel level measurement and signal transmission to the instrument cluster,
• compatibility with the tank geometry characteristic of all-wheel-drive versions.

As a result, the fuel system maintains proper operating parameters both during daily driving and when utilizing the full potential of the 1.8T and 4.2 engines.

Benefits of using an original Audi module

Using a factory Audi solution for the fuel supply system provides a number of practical operational benefits:

• Proper fitment to the fuel tank – the module design is engineered for a specific platform and Quattro drivetrain, which reduces the risk of fuel suction issues when the tank level is low.
• Consistent cooperation with the vehicle's electrical system – connectors, wiring, and fuel level sender characteristics are compliant with the factory parameters of the instrument cluster.
• Adequate performance for gasoline engines – the pump is adapted to the requirements of 1.8T and 4.2 units, which promotes stable fuel injection operation.
• Maintenance of factory control logic – the engine control unit receives predictable signals from the fuel level sender, which facilitates diagnostics and service.

Technical characteristics and installation

The module belongs to the Fuel pumps and level senders group, meaning it integrates a hydraulic element and a measuring sensor in one housing. It is intended for gasoline-powered systems, in accordance with Audi's factory specifications for this A4/S4 generation.

When selecting and installing, it is worth paying attention to:

• compatibility with the body style and drivetrain version (Quattro),
• proper seating in the fuel tank along with the seal,
• correct connection of fuel lines and the electrical harness,
• verification of fuel level readings after installation (dashboard gauge test).

The component comes from the Audi group, which helps maintain consistency with other fuel system components and facilitates subsequent diagnostics based on factory service procedures.

Condition, origin, and practical application

The offered module is an aftermarket component, which allows for cost-effective fuel system repair while maintaining the original Audi design. In practice, it will prove to be a solution for users who:

• are struggling with starting problems or engine misfires caused by insufficient fuel supply,
• observe incorrect fuel level readings on the gauges,
• want to restore factory system operation after previous modifications or the use of aftermarket replacements.

By maintaining the original module architecture, it is possible to restore proper fuel system operation without the need to interfere with the electrical installation or the tank structure.

Technical support and parts selection

For fuel supply system components, correct identification by OEM number and compatibility with the specific engine and drivetrain version are particularly important. Issues related to the selection and installation of used electrical and measuring components in a car are discussed in more detail in the Global Parts guide – Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, which helps to understand the principles of safely using dismantled parts.

If you are planning a comprehensive repair or upgrade of the fuel supply system in your Audi and need other elements from the same group, such as in-tank pump modules, fuel level senders, or complete delivery units, check the available parts in the Audi fuel pumps and level senders category.