Volkswagen Passat B7 Fuel Tank Pump Sender Unit 2.0 TDI 3AA919050B

Volkswagen Passat B7 Fuel Tank Pump Sender Unit 2.0 TDI is an original fuel system component, belonging to the Fuel pumps and level sensors category. Designed specifically for 2.0 TDI units in the Passat B7, it ensures stable engine fuel supply and precise fuel level readings, which translates into predictable system operation and daily driving comfort. This used OEM component is a sensible choice for professional repairs or replacement of fuel system parts in Volkswagen vehicles.

Specifications and technical data

• SKU: 3AA919050B
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 3AA919050B
• Substitutable numbers: 3AA919050B, 3AA 919 050 B
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The presented pump with an integrated fuel level sensor is responsible for two key tasks: transporting fuel from the tank to other system components and transmitting information about its quantity to the instrument cluster. In vehicles with a 2.0 TDI engine, the correct operation of this component has a direct impact on:

• stable pre-supply pressure for the injection system,
• correct fuel level readings on the dashboard,
• trouble-free engine starting at various fuel tank levels,
• smooth engine operation across the full load range.

Thanks to its factory fitment for the Passat B7 with a 2.0 TDI engine, this component works with the original wiring harness and fuel tank design, which facilitates installation and reduces the risk of leaks.

Benefits of using an original Volkswagen fuel pump

Choosing an original Volkswagen component in the Fuel pumps and level sensors category primarily ensures compatibility with the vehicle's factory installation. This means:

• maintaining the operating parameters specified by the vehicle manufacturer,
• correct cooperation with control electronics and indicators,
• proper mechanical fit to the fuel tank basket and geometry,
• reduced risk of venting and fuel suction problems.

A used OEM element is often more predictable than low-budget replacements, which is particularly important in modern diesel units that are sensitive to fuel supply disturbances.

Professional installation and diagnostics

To fully utilize the potential of this pump with a sensor, installation in accordance with the manufacturer's service procedures is recommended. In practice, this includes:

• checking the condition of the fuel tank cover seals,
• inspecting the electrical wiring for contact corrosion and chafing,
• verifying the accuracy of fuel level readings after installation,
• diagnosing any engine control unit errors related to the fuel system.

When replacing, it is also worth paying attention to the cleanliness of the tank interior so as not to introduce additional contaminants into the system that could strain the newly installed component.

Technical support and selection by part numbers

This fuel pump model with a level sensor is an original component, which makes it easy to identify by catalog numbers and match to a specific version of the Passat B7 equipment. In case of doubts when selecting parts, it is worth using the manufacturer's numbers or vehicle data to avoid problems with mechanical and electrical compatibility.

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

More knowledge about the fuel system

For users who want to better understand the operation of the fuel system, diagnostics, and the principles of selecting components by catalog numbers, a guide describing injectors, pumps, and the fuel tank, along with practical tips and answers to frequently asked questions, will be useful. Detailed information can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.