Audi A8 D4 Fuel Gauge Level Sensor Sending Unit Module Lower Left N/S 4H0919673D

Audi A8 D4 Fuel Gauge Level Sensor Sending Unit Module Lower Left N/S is an original component from the Fuel pumps and level sensors group, designed for precise measurement of fuel quantity in the tank on the left side of the vehicle. Thanks to its factory-spec Audi design, it ensures stable integration with the vehicle's electrical system and accurate readings on the instrument cluster fuel gauge.

Specifications and technical data

• SKU: 4H0919673G
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0919673D
• Substitutable numbers: 4H0919673D, 4H0 919 673 D
• Location on the vehicle: Left
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The presented lower left module is responsible for accurate fuel level readings in the driver-side section of the tank. It works in conjunction with other system components, transmitting signals to the vehicle's electronics, which allows for the proper operation of the fuel gauge and onboard systems dependent on fuel quantity.

The placement on the left side of the vehicle is crucial for the correct operation of the entire system – using the correct module in the appropriate part of the tank minimizes the risk of incorrect readings, sudden drops in levels, or starting issues when fuel is low.

Construction and fitment for Audi A8 D4

The sensor has been specifically designed for the Audi A8 D4 platform, which translates into a secure fitment to the factory fuel basket and wiring harness. The appropriate geometry of the float arm and resistance characteristics are tailored to the shape of the tank in this model, ensuring that the vehicle's controller receives reliable fuel level data.

Original manufacturing in accordance with Audi standards means maintaining compatibility with factory software and installation, without the need for modifications or adaptations. This is a particularly beneficial solution for professional repairs where repeatability and predictable performance are essential.

Condition, verification, and service application

This item comes from the secondary market, making it an attractive cost-effective alternative while maintaining the factory design. Such modules are frequently used in workshops specializing in the Audi brand, especially for repairs where it is crucial to restore correct fuel level readings after sensor failure, mechanical damage to the float, or corrosion issues on the resistance tracks.

Before installation, a standard diagnostic procedure is recommended – checking the resistance at the extreme positions of the float and verifying the condition of the connectors. A correctly selected and functional sensor helps eliminate common symptoms such as incorrect readings, a "jumping" needle, or premature low fuel warnings.

Benefits of using an original module

• Factory compatibility with the Audi A8 D4 system – no need to modify the wiring or mounts.
• Stable operation with the instrument cluster and onboard electronics.
• Possibility of economical fuel measurement system repair while maintaining the original design.
• Better performance predictability compared to universal aftermarket replacements.

Expanding the Audi fuel system

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

More about used electronics and vehicle modules

When selecting used components from the measurement and electronic groups, it is worth knowing best practices regarding compatibility, diagnostics, and installation. Practical tips on how to safely use second-hand electronics can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?