HomeEmission Control > SensorsStandard Ignition MAS0146 Mass Air Flow Sensor
Part #: MAS0146

Standard Ignition MAS0146 Mass Air Flow Sensor

24 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Subaru, Legacy, Forester, and Impreza
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Overview of Standard Ignition Mass Air Flow Sensor MAS0146

The Standard Ignition MAS0146 Mass Air Flow Sensor is designed for precise air intake measurement in Subaru vehicles. Compatible with Subaru Forester, Impreza, and Legacy models, this sensor helps maintain optimal engine performance and emissions control.

  • Direct replacement for original equipment mass air flow sensors
  • Compatible with Subaru Forester, Impreza, and Legacy models
  • Part number MAS0146 ensures exact fit and function
  • Accurate airflow measurement for improved engine management
  • Durable construction for reliable long-term operation

Detailed Product Description

The Standard Ignition MAS0146 Mass Air Flow Sensor is engineered to monitor the volume and density of air entering the engine. This data is critical for the engine control unit (ECU) to calculate the correct air-fuel mixture, which directly affects combustion efficiency and emissions. Designed specifically for Subaru Forester, Impreza, and Legacy vehicles, this sensor meets OEM specifications to ensure seamless integration and consistent performance. The MAS0146 part number corresponds to a sensor that maintains factory calibration standards, helping to prevent drivability issues related to inaccurate airflow readings.

Common Applications and Problem Resolution

  • Restores proper air-fuel ratio for smoother engine operation
  • Resolves rough idling and engine hesitation issues
  • Helps eliminate check engine light triggers related to airflow sensor faults
  • Improves fuel economy by providing accurate airflow data
  • Reduces emissions by supporting optimal combustion

Installation Notes and Tips

  • Ensure the ignition is off before sensor replacement
  • Disconnect the battery to prevent electrical shorts
  • Handle the sensor carefully to avoid damage to the sensing element
  • Clean the air intake housing before installing the new sensor
  • Verify proper electrical connector engagement after installation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM standards. The MAS0146 Mass Air Flow Sensor undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty terms may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship to provide confidence in your purchase.

BrandStandard Ignition
Part NumberMAS0146
Attachment MethodBolt On
Connector GenderFemale
Connector ShapeRectangular
Housing IncludedYes
MaterialMetal, Plastic
NotesComplete Assembly
Number of Bolt Holes4
Terminal GenderMale
Terminal TypeBlade

This part fits 24 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2000SubaruForesterN/A
2000SubaruImprezaN/A
1999SubaruForesterN/A
1999SubaruImprezaN/A
1999SubaruLegacy2.5LH4N/A
1998SubaruForester2.5LH4N/A
1998SubaruImpreza2.2LH4N/A
1998SubaruImpreza2.5LH4N/A
1998SubaruLegacy2.5LH4N/A
1997SubaruImpreza1.8LH4N/A
1997SubaruLegacy2.5LH4N/A
1996SubaruImpreza1.8LH4N/A
1996SubaruImpreza2.2LH4N/A
1996SubaruLegacy2.5LH4N/A
1995SubaruImpreza1.8LH4N/A
1995SubaruImpreza2.2LH4N/A
1995SubaruLegacy2.2LH4N/A
1994SubaruImpreza1.8LH4N/A
1994SubaruLegacy2.2LH4N/A
1993SubaruImpreza1.8LH4N/A
1993SubaruLegacy2.2LH4N/A
1992SubaruLegacy2.2LH4N/A
1991SubaruLegacy2.2LH4N/A
1990SubaruLegacy2.2LH4N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

158-10712-14603221003M22680AA160245-11283MF1694M-10625S286164-165574-10034917-801AF10200DL-6009MA1024MA141MAF0096V63-72-0004

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.