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You Are Buying
Brand: ISUMO
Aftermarket Premium High Quality
Mass Air Flow Sensor
W
Electrical Connector
(Pigtail Wiring Harness)
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Part#
MAS4578
EC1172
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Cross-Reference
10393949
23259883
213-4601
MAS4578
MAS0279
AF10061
74-50085
7450085
MA385
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SPECIFICATION:
| Color | Black |
| Housing Included | No |
| Terminal Type | Blade |
| Mounting Hardware Included | No |
| Connector Quantity | 1 |
| Connector Shape | Oval |
| Terminal Quantity | 5 |
| Connector Gender | Female |
| Mounting Bracket Included | No |
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FITS
| CHEVROLET | EXPRESS 2500 | 2010-2015 |
| CHEVROLET | EXPRESS 3500 | 2010-2015 |
| CHEVROLET | EXPRESS 4500 | 2010-2015 |
| CHEVROLET | SILVERADO 2500 | 2011-2015 |
| CHEVROLET | SILVERADO 3500 | 2011-2015 |
| GMC | SAVANA 2500 | 2010-2015 |
| GMC | SAVANA 3500 | 2010-2015 |
| GMC | SAVANA 4500 | 2010-2015 |
| GMC | SIERRA 2500 | 2011-2015 |
| GMC | SIERRA 3500 | 2011-2015 |
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Mass Air Flow Meter (MAF)
The Mass Air Flow (MAF) sensor is located in the air duct between the air cleaner
and the engines air intake. Location may be mounted to the throttle body or in the air cleaner
housing.
hat It Does: The MASS Air Flow sensor is a computer input that measures the amount of
air entering the engine. Barometric pressure may also be calculated either in the sensor or by
the computer for correct air/fuel mixture. The computer uses this information for air/fuel
mixture control, ignition timing and to aid the transmission in pressure control for accurate
shifting.
Failure Symptoms: Malfunction Indicator Light illumination, failed emission test,
engine hesitation on acceleration, poor fuel economy, poor engine performance, engine no start condition, engine surging.
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