Standard Ignition MAS0373 mass air flow sensor for the 2001-2004 Volvo S40 4-cylinder 1.9L and other vehicles measures the air entering the engine and sends that reading to the ECU. The ECU uses it to balance the air/fuel ratio for clean burns.
A failing mass air flow sensor can show up as a rough idle, hesitation under acceleration or a check engine light, though other problems can bring on similar symptoms. Before you replace the sensor, rule out a loose or cracked intake hose, a clogged air filter and damaged wiring at the connector. If the sensor is the cause, this unit replaces it.
This direct-fit OE replacement, tested to OE specifications, is a mass air flow sensor for the 2001-2004 Volvo S40 4-cylinder 1.9L and the 2001-2004 Volvo V40 4-cylinder 1.9L. The listing is one sensor, and each of these cars takes one.
Fit and size
Build and materials
Is this MAF sensor right for the 2001-2004 Volvo S40 4-cylinder 1.9L?
Yes. Standard Ignition MAS0373 fits the 2001-2004 Volvo S40 4-cylinder 1.9L, and it also fits the 2001-2004 Volvo V40 4-cylinder 1.9L.
What connector does the Standard Ignition MAS0373 have?
It has one rectangular female connector with three male blade terminals.
Is the MAS0373 mass air flow sensor computer-tested?
Yes. Each Standard Ignition MAS0373 is 100% computer-tested so the ECU receives accurate airflow readings under hard engine conditions.
Can a faulty mass air flow sensor cause a rough idle?
It can, because the ECU relies on the sensor's airflow reading to set the air/fuel ratio. Hesitation or a check engine light can also have other causes, so a shop can scan for codes.
Where is the Standard Ignition MAS0373 made?
The country of origin for the Standard Ignition MAS0373 mass air flow sensor is China.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
