Audi A4 B7 Petrol Fuel Pump Tank Sender Pump Unit 8E0919051CJ

Audi A4 B7 Petrol Fuel Pump Tank Sender Pump Unit is an original fuel system component designed for Audi vehicles with a petrol engine. It ensures stable fuel delivery to the fuel rail, which translates into smooth engine operation and predictable performance. This used component from the Fuel pumps and level sensors category is a sensible choice for professional car repairs or maintenance.

Specifications and technical data

• SKU: 8E0919051CJ
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0919051CJ
• Substitutable numbers: 8E0919051CJ, 8E0 919 051 CJ
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The fuel pump in the Audi A4 B7 is responsible for generating the appropriate pressure in the system so that petrol is delivered to the injectors in a continuous and consistent manner. A properly functioning pump reduces the risk of starting problems, jerking during acceleration, and power drops under higher engine loads.

This element works in conjunction with the fuel tank equipment and the level sensor, which is why its condition has a direct impact on the engine's performance and the vehicle's operational safety.

Benefits of using an original Audi pump

Using an original fuel pump in the Audi A4 B7 allows you to maintain the factory operating parameters of the fuel system without the need for any modifications. This is particularly important in modern petrol engines, where the engine control unit is sensitive to pressure and performance deviations.

• maintaining compliance with factory engine performance characteristics,
• stable fuel supply across the entire RPM range,
• reducing the risk of errors being stored in the engine control unit,
• no need for wiring or fuel basket modifications.

For the user, this means predictable vehicle behavior, better engine performance, and a lower risk of the fault recurring after repair.

Technical characteristics and compatibility

The pump has been designed to work with a petrol-based fuel system, which ensures appropriate material resistance and matched performance. The design is integrated with the tank equipment, making installation in the Audi A4 B7 orderly and predictable for the mechanic.

It is worth basing the choice of parts on the OEM number or interchangeable numbers visible in the technical specification – this allows you to verify compatibility with a specific engine version and model year. This approach minimizes the risk of purchasing a component with different operating characteristics or a different type of electrical connector.

Condition, verification, and service application

The offered fuel pump is a used component, which in service practice often represents a favorable compromise between repair costs and maintaining original build quality. Such components are frequently used for:

• fixing failures related to a lack of fuel pressure,
• repairs after prolonged driving with a very low fuel level,
• servicing the fuel system in vehicles used intensively.

Before installation, a standard workshop procedure is recommended: checking the electrical installation, the condition of fuel lines, and filters so that the newly installed pump can operate under proper conditions.

Related components and technical knowledge

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

When working with fuel systems and engine control, knowledge about selecting and installing onboard electronics may also be useful – you can find practical tips in the article Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, which discusses, among other things, selection by OEM numbers, compatibility issues, and the most common service questions.