Hella 7.28342.20.0 Mass Air Flow Sensor

Hella Mass Air Flow Sensor for Subaru Applications

Restore accurate airflow measurement with this Hella mass air flow sensor, part number 7.28342.20.0. It is a Pierburg distributed by Hella component built for direct replacement on select Subaru models, including WRX STI, WRX, Impreza, Forester, Crosstrek, XV Crosstrek, Legacy, and Outback.

Key Features

• Mass air flow sensor for emission control and engine management systems
• Pierburg distributed by Hella product line
• Direct-fit replacement for select Subaru OE applications
• Matches OE references 22680AA380 and 22680AA38A on listed vehicles
• Part number 7.28342.20.0 for easy identification

Detailed Description

This Hella mass air flow sensor, part number 7.28342.20.0, is engineered for Subaru air intake systems that rely on precise airflow data for fuel and drivability control. The Pierburg distributed by Hella line focuses on OE-style sensor replacement, making it a practical choice for Subaru WRX STI, Subaru WRX, Subaru Impreza, and other listed models when the original sensor has failed or is reading inaccurately.

Compatible fitment includes 2013-2020 Subaru WRX STI with OE No. 22680AA380, 2007-2019 Subaru Legacy with OE No. 22680AA38A, 2007-2019 Subaru Outback with OE No. 22680AA38A, 2009-2018 Subaru Forester with OE No. 22680AA380, 2016-2017 Subaru Crosstrek with OE No. 22680AA380, 2008-2016 Subaru Impreza with OE No. 22680AA380, 2013-2015 Subaru XV Crosstrek with OE No. 22680AA380, and 2013-2014 Subaru WRX with OE No. 22680AA380.

What It Can Help Address

• Rough idle caused by incorrect airflow readings
• Hesitation or poor throttle response
• Check engine light related to airflow sensor faults
• Fuel trim issues from inaccurate intake air measurement
• Reduced drivability on Subaru WRX STI, WRX, Impreza, Forester, Crosstrek, Legacy, or Outback models

Installation Notes and Tips

Verify the OE number on the original sensor before ordering, especially on Subaru WRX STI, Subaru Impreza, and Subaru Forester applications. Inspect the intake tract, air filter housing, and electrical connector for contamination or damage before installing part number 7.28342.20.0. After installation, clear diagnostic trouble codes and confirm stable idle and airflow readings.

Quality Assurance

Hella is a recognized automotive parts brand, and this Pierburg distributed by Hella sensor is listed for OE-number-matched Subaru applications to support accurate replacement selection.