How to Service the Mass Air Flow Sensor on Ford Expedition?

In order to maintain the MAF sensor, begin by unscrewing the electrical connector. After that, unscrew the two bolts that allow the sensor to be removed and remove it. To install it, tighten the bolts about 7 Nm (62 lb-in) and undo the steps to loosen the bolts to complete the task.

How is the Mass Air Flow Sensor Serviced on Ford Expedition?

To service the Mass Air Flow (MAF) sensor, loosen MAF sensor harness, loosen air cleaner clamp, and detach inlet side and outlet side. Take away grommet and MAF sensor plate, and then unconnect electrical connector. To install it, follow the reverse chronology in order to make sure it is properly aligned and sealed.

OEM Ford Expedition Mass Air Flow Sensor

MAF Sensor Meter

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Ford Expedition Mass Air Flow Sensor Part Number: BR3Z-12B579-A
$104.96 MSRP: $169.33
You Save: $64.37 (39%)
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Product Specifications
- Other Name: Sensor Assembly; MAF Sensor; Air Mass Sensor; Sensor
- Manufacturer Note: RH/LH
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2012-2014 Ford Expedition | EL King Ranch, EL Limited, EL XL, EL XLT, King Ranch, Limited, XL, XLT | 8 Cyl 5.4 L FLEX
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Ford Expedition Mass Air Flow Sensor Part Number: 3L3Z-12B579-BA
$156.67 MSRP: $257.78
You Save: $101.11 (40%)
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Product Specifications
- Other Name: Sensor Assembly; Air Charge Temperature Sensor; Intake Air Temperature Sensor; MAF Sensor; Sensor
- Manufacturer Note: 4.6L, Police
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2011 Ford Expedition | Eddie Bauer, EL Eddie Bauer, EL King Ranch, EL Limited, EL XL, EL XLT, Funkmaster Flex Edition, King Ranch, Limited, XL, XLS, XLT, XLT Sport | 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS
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Ford Expedition Mass Air Flow Sensor Part Number: XL3Z-12B579-BBRM
Product Specifications
- Other Name: Sensor Assembly; MAF Sensor Assembly; MAF Sensor; Air Mass Sensor
- Replaces: XL3Z-12B579-BARM, XL3Z-12B579-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2004 Ford Expedition | Eddie Bauer, NBX, XLS, XLT, XLT Sport | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L GAS
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Ford Expedition Mass Air Flow Sensor Part Number: F8LZ-12B579-AARM
Product Specifications
- Other Name: Remanufactured Sensor Assembly; MAF Sensor Assembly; MAF Sensor; Air Mass Sensor; Sensor
- Replaces: F8LZ-12B579-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-1999 Ford Expedition | Eddie Bauer, XLT | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L GAS
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Ford Expedition Mass Air Flow Sensor Part Number: 3L7Z-12B579-AARM
Product Specifications
- Other Name: Remanufactured Sensor Assembly; MAF Sensor Assembly; MAF Sensor; Air Mass Sensor
- Replaces: 3L7Z-12B579-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2004 Ford Expedition | Eddie Bauer, NBX, XLS, XLT, XLT Sport | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L GAS

Ford Expedition Mass Air Flow Sensor

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Ford Expedition Mass Air Flow Sensor Parts and Q&A

Mass Air Flow Sensor
3L3Z-12B579-BA
Q: How to Service the Mass Air Flow Sensor on Ford Expedition?
A: In order to maintain the MAF sensor, begin by unscrewing the electrical connector. After that, unscrew the two bolts that allow the sensor to be removed and remove it. To install it, tighten the bolts about 7 Nm (62 lb-in) and undo the steps to loosen the bolts to complete the task.
Mass Air Flow Sensor
XL3Z-12B579-BBRM
Q: How is the Mass Air Flow Sensor Serviced on Ford Expedition?
A: To service the Mass Air Flow (MAF) sensor, loosen MAF sensor harness, loosen air cleaner clamp, and detach inlet side and outlet side. Take away grommet and MAF sensor plate, and then unconnect electrical connector. To install it, follow the reverse chronology in order to make sure it is properly aligned and sealed.