Audi A4 B8 2.0 TFSI Petrol CDNC Fuel Pump Sender Unit 8K0919051AD

Audi A4 B8 2.0 TFSI Petrol CDNC Fuel Pump Sender Unit is a component from the Fuel pumps and level sensors category, designed for the fuel supply system of a petrol engine. Integrating the pump with the fuel level sensor ensures consistent operation with the vehicle's electronics and a stable power supply to the engine unit. This solution allows for a technically correct replacement of a worn-out component in Audi vehicles.

Specifications and technical data

• SKU: 8K0919051AD-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0919051AD
• Substitutable numbers: 8K0919051AD, 8K0 919 051 AD, 4F0919133B
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The described fuel pump with a level sensor operates within the petrol engine supply system, responsible for transporting fuel from the tank to the subsequent components of the system. The integrated level sensor transmits information about the fuel quantity to the instrument cluster, allowing the driver to monitor the range and plan refueling. Thanks to a design tailored to the specific configuration of the engine unit, the correct supply characteristics are maintained, which is essential for proper engine operation.

Construction and integration with vehicle electronics

The pump belongs to the group of components mounted inside the fuel tank, where it operates in a petrol environment. The use of a dedicated fuel level sensor allows for precise representation of the tank status on the gauge in the cabin. This solution minimizes the risk of incorrect readings and supports the stable operation of the fuel system, which is important for both performance and fuel consumption.

The element has been designed to work with the vehicle's electrical installation and control systems, which facilitates installation and subsequent operation. Properly selected connectors and body geometry allow for correct seating in the fuel tank module.

Benefits of using an original Audi component

Using a fuel pump with a level sensor from Audi helps maintain the factory operating parameters of the fuel supply system. Key advantages include:

• consistency with the factory electrical installation and engine control,
• proper fit to the fuel tank construction,
• maintenance of the correct supply characteristics for the petrol engine,
• integration of the pump and level sensor functions into a single module.

This reduces the risk of engine starting problems, power drops, or unstable idling resulting from improper fuel supply.

Condition, selection, and practical application

The item is offered as a used part, which allows for an economical replacement of the component while maintaining compliance with factory specifications. When selecting for a specific vehicle, it is worth using the manufacturer's markings and vehicle data to ensure full compatibility with the fuel system and electronics.

The fuel pump with a level sensor is suitable both for standard replacement of a worn-out element and for repairs related to starting problems, engine misfiring, or incorrect fuel level indications. Proper installation in the tank and checking the system for leaks are crucial for safe operation.

Technical support and additional information

To better understand the role of such components in the vehicle, it is worth reading the guide material on diagnostics and operation of the fuel supply system. A detailed discussion of the operation of pumps, injectors, and the fuel tank can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which helps in selecting the right components and explains typical symptoms of failures.

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