Standard Ignition MAS0146 mass air flow sensor for the 1998-2000 Subaru Forester H4 2.5L and other vehicles measures the air entering the engine and reports it to the ECU. The ECU uses that reading to balance the air/fuel ratio.
- Computer-tested so the ECU receives accurate airflow readings under hard engine conditions
- New unit, so no leftover debris is present to cause sensor failure
- Hybrid technology for reliable electronic circuitry
- No moving parts in the sensor, for wear-free sensor life
Quick facts
- Part: Standard Ignition MAS0146 mass air flow sensor
- Fits: the 1998-2000 Subaru Forester H4 2.5L and other vehicles
- Material: Metal, Plastic
- Condition: New
A rough idle, hesitation or weak fuel economy can go along with a failing mass air flow sensor. These signs alone do not prove the sensor is the problem, since a vacuum leak can cause them too.
Fits
This direct-fit OE replacement fits the 1998-2000 Subaru Forester H4 2.5L. It is also the mass air flow sensor for the 1993-1997 Subaru Impreza H4 1.8L, the 1995-1996 Impreza H4 2.2L and the 1998-2000 Impreza H4 2.2L or 2.5L, and the mass air flow sensor for the 1990-1995 Subaru Legacy H4 2.2L and the 1996-1999 Legacy H4 2.5L.
Specifications
Fit and size
- Quantity per vehicle: 1
- Attachment method: bolt on, 4 bolt holes
- Connector: 1 rectangular, female
- Terminals: 4, male blade type
Build and materials
- Type: complete assembly with housing
- Material: metal, plastic
- Condition: new
- Country of origin: China
In the box
One mass air flow sensor assembly with its housing. This listing is a single sensor, and the vehicle needs just one.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Is this MAF sensor the right one for the 1998-2000 Subaru Forester H4 2.5L?
Yes. Standard Ignition MAS0146 is a direct-fit mass air flow sensor for the 1998-2000 Subaru Forester H4 2.5L, and that engine takes one.
Does this air flow sensor for the 1998-2000 Subaru Forester H4 2.5L come with its housing?
Yes. Standard Ignition MAS0146 is a complete assembly with the housing included. It attaches with a bolt-on mount that has 4 bolt holes.
What connector does the Standard Ignition MAS0146 use?
The Standard Ignition MAS0146 has one rectangular female connector with four male blade terminals.
Could a rough idle mean this mass air flow sensor is failing?
It can. Hesitation or poor fuel economy can also go with a failing sensor, and a shop can read the codes and test it.
Does this mass air flow sensor have moving parts that wear out?
No. The sensor has no moving parts, which gives it a wear-free sensor life, and hybrid technology is used for its electronic circuitry.
