Audi Q3 8U Fuel Pump Sender Tank Left N/S 2.0 TFSI Petrol 5N0919109C

Audi Q3 8U Fuel Pump Sender Tank Left N/S 2.0 TFSI Petrol is a component from the Fuel pumps and level sensors group, designed for the fuel supply system of a petrol engine. The integrated pump and sender unit is responsible for stable fuel delivery and precise level reading in the tank, which translates into predictable engine performance and a correct reading on the instrument cluster.

Specifications and technical data

• SKU: 5N0919109C
• Mark: Audi
• Condition: Used
• OEM Part Number: 5N0919109C
• Substitutable numbers: 5N0919109C, 5N0 919 109 C, 5N0919109E, 5N0 919 109 E
• Location on the vehicle: Left
• Fuel type: Petrol
• Part type: Fuel Pump
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The presented fuel pump and sender unit has been designed to operate in the petrol fuel supply system of the Audi Q3 8U. It is responsible for maintaining the correct fuel pressure in the lines and transmitting fuel level information to the vehicle's electronics. Its placement on the left side of the tank allows for proper emptying of the tank chamber and a stable fuel level reading under typical operating conditions.

By combining the functions of a pump and a level sensor into one assembly, the number of connections in the system is reduced, which lowers the risk of leaks and facilitates maintenance. This solution is particularly important in modern TFSI units, where the fuel supply system operates within strictly defined parameters.

Construction of the fuel pump and sender assembly

The module belongs to the Fuel pumps and level sensors category, which means that the element responsible for pumping fuel and the sender mechanism working with the sensor are integrated into one housing. This design ensures consistency of operation – the change in fuel level is recorded directly at the point of extraction, and the signal is sent to the controller and the instrument cluster.

This solution allows for:

• stable petrol engine supply across the entire load range,
• continuous measurement of the fuel level in the tank,
• reduction of the number of separate components in the fuel system.

Installation parameters and compatibility

The component is intended for installation on the left side of the fuel tank, which is important when planning service work and verifying compatibility with a specific body version. Use in a petrol system requires following appropriate safety procedures during removal and installation – especially regarding system venting and working in a fuel vapor zone.

Before purchasing, it is worth comparing the fuel system configuration in your Audi Q3 8U with the offered module, paying attention to the fuel type and the installation side. A correctly selected pump and sender assembly helps avoid problems with starting, engine misfiring, or incorrect fuel level readings.

Product characteristics and practical application

The offered Audi brand element, as a part from the Fuel pumps and level sensors group, is intended for use in vehicles with a petrol engine where precise fuel quantity control and stable engine power supply are required. It works well both for typical replacement of a worn-out module and for repairs related to starting problems, engine stalling, or incorrect fuel gauge readings.

The used condition allows for an economical repair while maintaining the original fuel system design. This solution is particularly beneficial for servicing vehicles that are used intensively, where a reasonable maintenance cost is important while maintaining compliance with factory solutions.

System expansion and selection of related components

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 pump modules, level sensors, or mounting elements, check the available parts in the Audi fuel pumps and level sensors category.

When selecting used components for modern fuel supply and control systems, it is worth paying attention to the specifics of the vehicle's electronics and installation procedures. Practical tips on choosing and verifying used elements, such as control modules or sensors, can be found in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which helps to approach the topic of dismantled parts consciously.