Audi A3 8V Fuel Pump Sender Unit Diesel 5Q0919050AN

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A3 8V Fuel Pump Sender Unit Diesel is an original component from the Fuel pumps and level sensors group, designed for precise operation within the diesel engine fuel supply system. It ensures stable diesel fuel delivery and an accurate fuel level reading, which translates into predictable operation and safe driving.

Specifications and technical data

• SKU: 5Q0919050AN
• Mark: Audi
• Condition: Used
• OEM Part Number: 5Q0919050AN
• Substitutable numbers: 5Q0919050AN, 5Q0 919 050 AN
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

This fuel pump and level sensor assembly has been designed specifically for use with Diesel engines in the Audi A3 8V generation. It is responsible for two key tasks: maintaining proper fuel supply to the engine and transmitting reliable information about the fuel level in the tank to the instrument cluster. A properly functioning module reduces the risk of air entering the system, facilitates starting, and stabilizes engine operation across the full load range.

Construction of the pump and level sensor assembly

The module combines an electric fuel pump and an integrated float-type level sensor in a single housing. This solution simplifies maintenance, reduces the number of connections in the tank, and improves the tightness of the entire system. The OEM design is matched to the geometry of the Audi A3 8V tank, allowing the sensor to precisely track fuel level changes, while the pump maintains stable supply pressure under typical road conditions, including during dynamic driving and low fuel levels.

Benefits of using an original component

Using an original pump and level sensor module in an Audi offers a number of practical benefits:

• preservation of the factory operating characteristics of the diesel fuel system,
• proper compatibility with vehicle electronics and instrument cluster gauges,
• reduced risk of diagnostic errors related to incorrect fuel level readings,
• proper dimensional fit for the fuel tank in the Audi A3 8V,
• easier diagnostics and maintenance due to the retention of the original configuration.

For the user, this means more predictable refueling planning, stable engine operation, and fewer starting issues after prolonged parking.

Condition, installation, and service application

The item comes from a used vehicle, making it an attractive cost-effective alternative to new OEM components while maintaining the manufacturer's original specifications. The module is intended for installation in place of the factory unit in the fuel tank, using existing electrical connectors and fuel lines. In practice, this means plug-and-play installation for the appropriate version of the Audi A3 8V with a diesel engine, provided it is correctly selected based on the OEM number or VIN.

Technical support and selection by part numbers

When selecting this module for a specific vehicle configuration, it is recommended to use the OEM part number and interchangeable numbers to verify full compatibility with the specific body and engine version. This helps avoid installation issues and incorrect fuel level gauge operation. It is particularly important to match the fuel type, as the design of modules for diesel units differs from solutions used in gasoline engines.

For users who want to deepen their knowledge regarding the diagnostics and operation of such components, an article describing the operation of the entire fuel system is available here: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Expanding Audi fuel system service

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

If you are considering whether a new or used part is a better choice in your case, comparing costs and durability described in this material may be helpful: New or used? A comparison of costs and quality of car parts. This will make it easier for you to make an informed service decision for your Audi A3 8V.