How to Service and Repair the Mass Air Flow Sensor on 2003 Ford Focus?

The servicing process of Air Flow Meter/Sensor begins with disconnecting the battery ground cable. The vehicle should be placed in neutral mode before hoisting it. The first step of service and repair begins with disconnecting the MAF sensor electrical connector before removing its two retaining screws. The MAF sensor removal process ends after the sensor is taken out and the installation concludes with the opposite order of removal steps.

OEM 2003 Ford Focus Mass Air Flow Sensor

MAF Sensor Meter

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2003 Ford Focus Mass Air Flow Sensor Part Number: 1L5Z-12B579-ARRM
$272.22 MSRP: $376.59
You Save: $104.37 (28%)
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Product Specifications
- Other Name: Remanufactured Sensor Assembly; MAF Sensor; Air Mass Sensor
- Replaces: 1L5F-12B579-AB, AFLS-129, 1L5Z-12B579-AB
- Base No.: 12B579
- Item Weight: 0.50 Pounds
- Item Dimensions: 4.2 x 3.3 x 4.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 1L5Z-12B579-ARRM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
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Fits the following 2003 Ford Focus Submodels:
- SE, SVT, ZTS, ZTW, ZX3, ZX5 | 4 Cyl 2.0 L GAS
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2003 Ford Focus Mass Air Flow Sensor Part Number: YS4Z-12B579-FRM
Product Specifications
- Other Name: Sensor Assembly; MAF Sensor; Air Mass Sensor
- Replaces: YS4Z-12B579-FARM, YS4Z-12B579-FA, YS4Z-12B579-GB, YS4Z-12B579-GA
- Base No.: 12B579
- Item Weight: 0.80 Pounds
- Item Dimensions: 5.5 x 4.7 x 5.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: YS4Z-12B579-FRM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2003 Ford Focus Submodels:
- LX, S, SE, SES, Sony Limited Edition, ZTS, ZTW, ZX3, ZX4, ZX5, ZXW | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS

2003 Ford Focus Mass Air Flow Sensor

If you're seeking quality and affordability, look no further than our extensive inventory of genuine 2003 Ford Focus Mass Air Flow Sensor available at FordPartsDeal.com. You can confidently purchase our OEM 2003 Ford Focus Mass Air Flow Sensor as they are supported by the manufacturer's warranty and our hassle-free return policy, alongside the benefit of our fast delivery service.

2003 Ford Focus Mass Air Flow Sensor Parts Q&A

Q: How to Service and Repair the Mass Air Flow Sensor on 2003 Ford Focus?
A: The servicing process of Air Flow Meter/Sensor begins with disconnecting the battery ground cable. The vehicle should be placed in neutral mode before hoisting it. The first step of service and repair begins with disconnecting the MAF sensor electrical connector before removing its two retaining screws. The MAF sensor removal process ends after the sensor is taken out and the installation concludes with the opposite order of removal steps.