Audi A4 B8 A5 8T VW Passat B7 VW Golf 6 Air Flow Mass Meter Sensor 03L906461A

Audi A4 B8 A5 8T VW Passat B7 VW Golf 6 Air Flow Mass Meter Sensor is an original component from the Air and fuel intake sensors group, designed for precise measurement of the air intake volume in Audi and Volkswagen engines. A properly functioning mass air flow sensor supports stable engine operation, correct fuel dosing, and smooth performance at idle and under load. This used OEM component is a sensible choice for intake system maintenance when you want to maintain factory engine performance characteristics.

Specifications and technical data

• SKU: 03L906461A
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 03L906461A
• Substitutable numbers: 03L906461A, 03L 906 461 A, 0281002956, 0 281 002 956
• Category: Air Intake & Fuel Sensors

Function and role of the mass air flow sensor in the intake system

The mass air flow sensor in the Audi A4 B8, A5 8T, VW Passat B7, and VW Golf 6 is responsible for the accurate measurement of the air mass drawn into the engine. Based on the sensor signal, the engine control unit selects the appropriate fuel dose, which affects:

• stable idle speed,
• smooth acceleration without jerking,
• maintenance of the correct air-fuel mixture,
• reduction of excessive smoke and power loss.

A functional mass air flow sensor is particularly important in modern turbocharged units, where even small deviations in air measurement can cause a noticeable deterioration in performance and increased fuel consumption.

Compatibility and selection by part numbers

The offered mass air flow sensor comes from the Volkswagen line and is intended for use in selected versions of the Audi A4 B8, A5 8T, VW Passat B7, and VW Golf 6. When selecting the component, it is recommended to verify compatibility using the OEM part number and interchangeable numbers – this helps avoid installation issues and ensures proper cooperation with the vehicle's electronics.

Because the part has assigned reference numbers, it can be precisely matched to a specific engine version, also by using service catalogs or a VIN search. This approach minimizes the risk of installing an incorrect sensor and eliminates the need for subsequent corrections.

Benefits of using an original sensor

Choosing a used, original mass air flow sensor for Audi and Volkswagen provides a number of practical benefits in daily operation:

• Factory signal characteristics – the engine control unit receives data consistent with the maps saved by the manufacturer.
• Proper fit to the air filter housing and intake ducts, which facilitates installation and reduces the risk of leaks.
• Stable operation across a wide range of loads, from idle to dynamic acceleration.
• Possibility to use the existing wiring harness without modifications.

For the user, this means more predictable vehicle behavior, better throttle response, and a reduction in typical symptoms of a faulty mass air flow sensor, such as power loss, limp mode, or increased fuel consumption.

Component condition and installation aspects

The offered mass air flow sensor is in used condition, which in practice means it has been removed from a vehicle and verified for suitability for further use. This type of part is a good solution for servicing vehicles where a reasonable repair cost is important while maintaining parameters close to factory specifications.

The installation of the mass air flow sensor in the Audi A4 B8, A5 8T, VW Passat B7, and VW Golf 6 is usually straightforward – the sensor is mounted in the intake duct, and then the electrical connector is plugged in. It is recommended to check the condition of the air filter and the tightness of the intake ducts before installation, which will allow you to fully utilize the potential of the newly installed component.

Expanding intake and fuel system service

When working on the intake and fuel system, it is worth looking at the entire engine supply system as a whole. The proper selection and diagnostics of components such as injectors, fuel pumps, or the tank have a direct impact on the cooperation with air sensors. A detailed discussion of these issues, along with practical tips on selecting parts by VIN and OEM, can be found in the article: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other components from the same group, such as pressure sensors, temperature measurement elements, or additional flow sensors, check the available parts in the Volkswagen air and fuel intake sensors category.