Audi A4 B7 Fuel Tank Level Floating Sensor Control Unit 8E0201317R

Audi A4 B7 Fuel Tank Level Floating Sensor Control Unit is a component from the Fuel pumps and level sensors group, responsible for precise reading of the fuel quantity in the tank and transmitting information to the instrument cluster. Using this original Audi component allows for maintaining the factory characteristics of the fuel system and stable operation of the fuel gauge without unwanted fluctuations or inaccuracies.

Specifications and technical data

• SKU: 8E0201317R
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0201317R
• Substitutable numbers: 8E0201317R, 8E0 201 317 R
• Category: Fuel Pumps & Sending Units

Function and role of the fuel level sensor float

The fuel level sensor float in the Audi A4 B7 is responsible for continuous measurement of the fuel level in the tank and converting mechanical movement into an electrical signal interpreted by the vehicle's electronics. A properly functioning component:

• ensures a stable fuel level reading on the dashboard,
• reduces the risk of sudden drops in readings during acceleration or braking,
• supports safe range planning and refueling,
• maintains operational compatibility with the vehicle's factory software.

By maintaining the original resistance characteristics, the sensor works with the electrical system without the need for wiring modifications or additional programming.

Construction and fitment to the fuel system

The presented fuel level sensor float is structurally matched to the fuel tank and power module used in the Audi A4 B7. The properly shaped float arm and guide geometry ensure the component moves correctly throughout the entire working range of the tank, which translates into predictable readings from reserve to full capacity.

The original electrical connector allows for plug-and-play installation without wiring modifications. This ensures consistency with factory harnesses and minimizes the risk of electrical contact issues.

Benefits of using an original used component

Choosing a used Audi fuel level sensor float is a solution that allows you to balance cost control with maintaining factory specifications. Compared to generic replacements, the original component:

• maintains electrical parameter compatibility with the vehicle's system,
• minimizes the risk of reading errors and warning messages,
• allows for seamless integration with the instrument cluster and control units.

This is a practical solution when diagnosing faults such as unstable fuel readings, no gauge response after refueling, or a malfunctioning reserve indicator.

Service purpose and practical application

The Audi A4 B7 fuel level sensor float is suitable both for typical replacement of a worn-out part and for fuel system repairs after servicing the fuel tank. It is particularly useful in situations where:

• there are problems with fuel level readings after a pump replacement,
• there are discrepancies between the actual amount of fuel and the dashboard reading,
• it is necessary to replace only the measuring module without interfering with other system components.

Thanks to the factory design, installation is straightforward, and the risk of incompatibility with other fuel system components is limited.

Technical support and additional information

If you want to better understand when choosing a used component is a reasonable solution and how to approach selecting parts from the measurement and electronics group, it is worth reading our guide: The second life of electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?

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