Audi A6 C6 2.0 TDI CAHA Fuel Pump In Tank Fuel Sending Unit 4F0919050A

Audi A6 C6 2.0 TDI CAHA Fuel Pump In Tank Fuel Sending Unit is a component from the Fuel pumps and level sensors group, designed for the diesel engine fuel supply system. It is responsible for the stable delivery of diesel fuel from the tank to the subsequent components of the system, which translates into reliable starting and smooth operation of the power unit. This solution is dedicated to Audi, ensuring proper structural and electrical fitment.

Specifications and technical data

• SKU: 4F0919050A
• Mark: Audi
• Condition: Used
• OEM Part Number: 4F0919050A
• Substitutable numbers: 4F0919050A, 4F0 919 050 A
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and role in the fuel system

The in-tank pump in the Audi A6 C6 2.0 TDI CAHA operates within the Diesel engine fuel supply system, responsible for transporting fuel at the appropriate pre-pressure. A properly functioning component of this type:

• ensures stable supply to the fuel rail and high-pressure pump,
• reduces the risk of air entering the system,
• supports smooth engine operation across the full load range,
• facilitates starting after a long period of inactivity or after fuel system maintenance.

Thanks to a design tailored to the specific A6 C6 generation with the 2.0 TDI CAHA unit, the pump works seamlessly with the vehicle's factory fuel and electrical installation.

Benefits of using an original in-tank pump

Using an in-tank fuel pump dedicated to the Audi A6 C6 allows you to maintain the factory performance parameters of the fuel supply system. In practice, this means:

• compatibility with the electronics and control systems used in the given model,
• appropriately selected performance for the 2.0 TDI CAHA engine,
• correct interaction with the fuel level sensor located in the same assembly,
• reduction of the risk of controller errors resulting from improper part selection.

For the user, this means more predictable operation, stable performance parameters, and a lower risk of starting problems or engine stuttering at low fuel levels.

Product characteristics and installation

The presented pump belongs to the Fuel pumps and level sensors group, which means it combines the functions of fuel supply and fuel level measurement in the tank into one assembly. Such a solution simplifies the system design and facilitates maintenance, as replacement takes place within a single module mounted in the tank.

The component is designed to work with diesel fuel, so its construction, seals, and materials used are adapted to the specifics of Diesel fuel. Proper selection of this part is important both for the durability of the pump and for the safety of the entire fuel system.

Condition and use in service practice

The in-tank fuel pump offered in this variant is an aftermarket component, which allows for economical repair of the fuel supply system while maintaining compatibility with the specific Audi model. This type of solution is often chosen in cases of:

• starting problems after a long period of inactivity,
• power drops resulting from insufficient fuel supply,
• failures of the in-tank pump module combined with incorrect fuel level readings.

Selecting parts according to the vehicle manufacturer's markings and fuel system parameters helps reduce the risk of incompatibility and speeds up service work.

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

Technical support and additional materials

When selecting fuel system components and planning the replacement of the in-tank pump, it is worth using practical advice on diagnostics and operation. Detailed information on the system structure, selection rules based on manufacturer markings, and service tips can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

If you are also interested in the topic of used electronic components in vehicles, their selection, and compatibility verification, the guide Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?, which discusses best practices when purchasing aftermarket components, may be helpful.