The mass HELLA brand Air Mass Sensor is an important electronic component of a car. It is responsible for the composition and concentration of the air-fuel mixture and directly affects the operation of the internal combustion engine. It is installed on vehicles with both diesel and gasoline engines. Usually this part is installed after the air filter.

1. A4 (8D2, B5)
2. A4 Saloon (8D2, B5)
3. A4 / S4 (8D2, B5)
4. A4 Avant (8D5, B5)
5. A3 (8L1)
6. A3 / S3 (8L1)
7. PASSAT (3B2)
8. PASSAT Saloon (3B2)
9. TRANSPORTER IV Bus (70B, 70C, 7DB, 7DK, 70J, 70K, 7DC, 7DJ)
10. TRANSPORTER / CARAVELLE IV Bus (70B, 70C, 7DB, 7DK, 70J, 70K
11. TRANSPORTER / MULTIVAN IV Bus (70B, 70C, 7DB, 7DK, 70J, 70K,
12. EUROVAN / CARAVELLE IV Bus (70B, 70C, 7DB, 7DK, 70J, 70K, 7D
13. TRANSPORTER T4 Bus (70B, 70C, 7DB, 7DK, 70J, 70K, 7DC, 7DJ)
14. TRANSPORTER / CARAVELLE Mk IV Bus (70B, 70C, 7DB, 7DK, 70J,
15. CARAVELLE IV Bus (70B, 70C, 7DB, 7DK, 70J, 70K, 7DC, 7DJ)
16. PASSAT Variant (3B5)
17. PASSAT Wagon (3B5)
18. PASSAT Estate (3B5)
19. OCTAVIA I (1U2)
20. GOLF IV (1J1)
21. See more in applications

The usage of the air mass sensor

During installation, the air mass sensor is connected to the motor control unit, and allows you to write off information about the state of the air-fuel mixture and carry out the appropriate analysis. With the help of this device, the electronic control unit of the car has the ability to determine how much air the car engine sucks in. Based on the received data, the electronics of the car will automatically adjust the fuel injection when the fuel in the required volume must be combined with oxygen inside the engine. This makes it possible to create an optimal mixture of fuel and air, and ensures its ideal combustion.