{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
2003 Ford Focus

2003 Ford Focus Mass Air Flow Sensors

Refine by:

Shop Catalog

Showing 1 - 15 of 22 results
Display item:
15
30
45
Sort by:
Mass Air Flow Sensor, 4 Cylinder, 2.3L Engine, Sensor Only, without housing
Part Number: REPF316712
Guaranteed to Fit
$30.99
Vehicle Fitment
  • 2003 Ford Focus ZTW 4 Cyl 2.3L
  • 2003 Ford Focus LX 4 Cyl 2.3L
  • 2003 Ford Focus ZTS 4 Cyl 2.3L
  • 2003 Ford Focus ZX5 4 Cyl 2.3L
  • 2003 Ford Focus ZX3 4 Cyl 2.3L
  • 2003 Ford Focus SE 4 Cyl 2.3L
Product Details
Notes : Sensor only; Without housingReplaces OE Number : 3L3A12B579BA, AFLS131Configuration : 6-Prong Blade Male Terminal & 1 Female ConnectorQuantity Sold : Sold individuallyWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is 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.

Condition : NewInterchange Part Number : 8650031, 1581403, AF10140, 3L3A12B579BA, AFLS131Recommended Use : OE ReplacementReturns Policy : 30-Day Return Policy
Mass Air Flow Sensor, 4 Cyl., 2.0L Engine
Part Number: REPF316715
Guaranteed to Fit
$28.01
Vehicle Fitment
  • 2003 Ford Focus SE 4 Cyl 2.0L
  • 2003 Ford Focus LX 4 Cyl 2.0L
  • 2003 Ford Focus ZX5 4 Cyl 2.0L
  • 2003 Ford Focus SVT 4 Cyl 2.0L
  • 2003 Ford Focus ZX3 4 Cyl 2.0L
  • 2003 Ford Focus ZTS 4 Cyl 2.0L
  • 2003 Ford Focus ZTW 4 Cyl 2.0L
Product Details
Notes : Sensor only; Without housingReplaces OE Number : 1L2F12B579BA, 1L2Z12B579ARM, AFLS180RMConfiguration : 6-Prong Blade Male Terminal & 1 Female ConnectorQuantity Sold : Sold individuallyWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is 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.

Condition : NewInterchange Part Number : 7450011, MF0865, AF10127, AFLS163, 1L2F12B579BA, 1L2Z12B579ARM, AFLS180RMRecommended Use : OE ReplacementReturns Policy : 30-Day Return Policy
Mass Air Flow Sensor, 4 Cyl., 2.0L Engine
Part Number: RF31670001
Guaranteed to Fit
$42.99
Vehicle Fitment
  • 2003 Ford Focus SE 4 Cyl 2.0L
  • 2003 Ford Focus LX 4 Cyl 2.0L
  • 2003 Ford Focus ZX5 4 Cyl 2.0L
  • 2003 Ford Focus SVT 4 Cyl 2.0L
  • 2003 Ford Focus ZX3 4 Cyl 2.0L
  • 2003 Ford Focus ZTS 4 Cyl 2.0L
  • 2003 Ford Focus ZTW 4 Cyl 2.0L
Product Details
Notes : With housingReplaces OE Number : XF2F12B579AAConfiguration : 6-Prong Blade Male Terminal & 1 Female ConnectorQuantity Sold : Sold individuallyWarranty : 1-year DriveWire unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is 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.

Condition : NewInterchange Part Number : 2453102, XF2F12B579AARecommended Use : OE ReplacementReturns Policy : 30-Day Return Policy
Mass Air Flow Sensor, 4 Cyl., 2.3L Engine, Sensor Only -
Part Number: MRD1MF117
Guaranteed to Fit
$80.49
Vehicle Fitment
  • 2003 Ford Focus ZTW 4 Cyl 2.3L Sensor Only
  • 2003 Ford Focus LX 4 Cyl 2.3L Sensor Only
  • 2003 Ford Focus ZTS 4 Cyl 2.3L Sensor Only
  • 2003 Ford Focus ZX5 4 Cyl 2.3L Sensor Only
  • 2003 Ford Focus ZX3 4 Cyl 2.3L Sensor Only
  • 2003 Ford Focus SE 4 Cyl 2.3L Sensor Only
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : NewRecommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.3L Engine -
Part Number: 2451108
Guaranteed to Fit
$54.99
Vehicle Fitment
  • 2003 Ford Focus ZTW 4 Cyl 2.3L
  • 2003 Ford Focus LX 4 Cyl 2.3L
  • 2003 Ford Focus ZTS 4 Cyl 2.3L
  • 2003 Ford Focus ZX5 4 Cyl 2.3L
  • 2003 Ford Focus ZX3 4 Cyl 2.3L
  • 2003 Ford Focus SE 4 Cyl 2.3L
Product Details
Notes : (6) Terminals; Female Connector; Includes Mounting HardwareQuantity Sold : Sold individuallyWarranty : 90-day Walker Products limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : NewRecommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.0L Engine -
Part Number: WKP2453102
Guaranteed to Fit
$74.49
Vehicle Fitment
  • 2003 Ford Focus SE 4 Cyl 2.0L
  • 2003 Ford Focus LX 4 Cyl 2.0L
  • 2003 Ford Focus ZX5 4 Cyl 2.0L
  • 2003 Ford Focus SVT 4 Cyl 2.0L
  • 2003 Ford Focus ZX3 4 Cyl 2.0L
  • 2003 Ford Focus ZTS 4 Cyl 2.0L
  • 2003 Ford Focus ZTW 4 Cyl 2.0L
Product Details
Notes : Full assembly with housingQuantity Sold : Sold individuallyWarranty : 90-day Walker Products limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : NewInterchange Part Number : RF31670001Recommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.3L Engine -
Part Number: A17450031
Guaranteed to Fit
$55.99

+ $23.91 Refundable Core Charge

Vehicle Fitment
  • 2003 Ford Focus ZTW 4 Cyl 2.3L
  • 2003 Ford Focus LX 4 Cyl 2.3L
  • 2003 Ford Focus ZTS 4 Cyl 2.3L
  • 2003 Ford Focus ZX5 4 Cyl 2.3L
  • 2003 Ford Focus ZX3 4 Cyl 2.3L
  • 2003 Ford Focus SE 4 Cyl 2.3L
Product Details
Notes : Bolt-on mounting typeReplaces OE Number : 1F7013210AQuantity Sold : Sold individuallyWarranty : 1-year or 18,000-mile A1 Cardone limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : RemanufacturedSeries : Reman SeriesInterchange Part Number : 8650031, 1581403, 1F7013210ARecommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.0L Engine, DOHC -
Part Number: SIMAS0118
Guaranteed to Fit
$117.49
Vehicle Fitment
  • 2003 Ford Focus SE 4 Cyl 2.0L DOHC
  • 2003 Ford Focus LX 4 Cyl 2.0L DOHC
  • 2003 Ford Focus ZX5 4 Cyl 2.0L DOHC
  • 2003 Ford Focus ZX3 4 Cyl 2.0L DOHC
  • 2003 Ford Focus SVT 4 Cyl 2.0L DOHC
  • 2003 Ford Focus ZTS 4 Cyl 2.0L DOHC
  • 2003 Ford Focus ZTW 4 Cyl 2.0L DOHC
Product Details
Quantity Sold : Sold individuallyWarranty : 3-year or 36,000-mile Standard limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : NewSeries : Standard OE ReplacementRecommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.0L Engine -
Part Number: WKP2451102
Guaranteed to Fit
$62.99
Vehicle Fitment
  • 2003 Ford Focus SE 4 Cyl 2.0L
  • 2003 Ford Focus LX 4 Cyl 2.0L
  • 2003 Ford Focus ZX5 4 Cyl 2.0L
  • 2003 Ford Focus SVT 4 Cyl 2.0L
  • 2003 Ford Focus ZX3 4 Cyl 2.0L
  • 2003 Ford Focus ZTS 4 Cyl 2.0L
  • 2003 Ford Focus ZTW 4 Cyl 2.0L
Product Details
Notes : Sensor onlyQuantity Sold : Sold individuallyWarranty : 90-day Walker Products limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : NewRecommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.0L Engine -
Part Number: A17450011
Guaranteed to Fit
$68.99

+ $40.14 Refundable Core Charge

Vehicle Fitment
  • 2003 Ford Focus SE 4 Cyl 2.0L
  • 2003 Ford Focus LX 4 Cyl 2.0L
  • 2003 Ford Focus ZX5 4 Cyl 2.0L
  • 2003 Ford Focus SVT 4 Cyl 2.0L
  • 2003 Ford Focus ZX3 4 Cyl 2.0L
  • 2003 Ford Focus ZTS 4 Cyl 2.0L
  • 2003 Ford Focus ZTW 4 Cyl 2.0L
Product Details
Notes : Bolt-on mounting typeReplaces OE Number : 1F2013210, 1L2Z12B579AA, 1L2Z12B579BA, 1L2Z12B579BARM, 1L5F12B579AB, 1L5Z12B579AB, 1SDF12B579BA, 1SDZ12B579BA, 1SDZ12B579BARM, 98AB12B579FA, AJ0313215, AJ0313215A, XF2Z12B579AA, XF2Z12B579AB, XF2Z12B579ABRM, XF2Z12B579BA, XF2Z12B579BB, XF2Z12B579BBRM, YF0913215, YS4Z12B579FAQuantity Sold : Sold individuallyWarranty : 1-year or 18,000-mile A1 Cardone limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : RemanufacturedSeries : Reman SeriesInterchange Part Number : MF0865, AF10127, 1F2013210, 1L2Z12B579AA, 1L2Z12B579BA, 1L2Z12B579BARM, 1L5F12B579AB, 1L5Z12B579AB, 1SDF12B579BA, 1SDZ12B579BA, 1SDZ12B579BARM, 98AB12B579FA, AJ0313215, AJ0313215A, XF2Z12B579AA, XF2Z12B579AB, XF2Z12B579ABRM, XF2Z12B579BA, XF2Z12B579BB, XF2Z12B579BBRM, YF0913215, YS4Z12B579FARecommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.0L Engine, Eng. VIN: P -
Part Number: WAIMAF10128
Guaranteed to Fit
$69.99
Vehicle Fitment
  • 2003 Ford Focus SE 4 Cyl 2.0L Eng. VIN: P
  • 2003 Ford Focus LX 4 Cyl 2.0L Eng. VIN: P
Product Details
Replaces OE Number : MF0861, MA206, AF10128Quantity Sold : Sold individuallyWarranty : WAI limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : NewSeries : OE Replacement SeriesInterchange Part Number : MF0861, MA206, AF10128Recommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.0L Engine, Sensor Module Only -
Part Number: A18650011
Guaranteed to Fit
$84.49
Vehicle Fitment
  • 2003 Ford Focus SE 4 Cyl 2.0L Sensor Module Only
  • 2003 Ford Focus LX 4 Cyl 2.0L Sensor Module Only
  • 2003 Ford Focus ZX5 4 Cyl 2.0L Sensor Module Only
  • 2003 Ford Focus SVT 4 Cyl 2.0L Sensor Module Only
  • 2003 Ford Focus ZX3 4 Cyl 2.0L Sensor Module Only
  • 2003 Ford Focus ZTS 4 Cyl 2.0L Sensor Module Only
  • 2003 Ford Focus ZTW 4 Cyl 2.0L Sensor Module Only
Product Details
Notes : Bolt-on mounting typeQuantity Sold : Sold individuallyWarranty : Lifetime A1 Cardone limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : NewSeries : New SeriesRecommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.3L Engine -
Part Number: DELAF10140
Guaranteed to Fit
$106.49
Vehicle Fitment
  • 2003 Ford Focus ZTW 4 Cyl 2.3L
  • 2003 Ford Focus LX 4 Cyl 2.3L
  • 2003 Ford Focus ZTS 4 Cyl 2.3L
  • 2003 Ford Focus ZX5 4 Cyl 2.3L
  • 2003 Ford Focus ZX3 4 Cyl 2.3L
  • 2003 Ford Focus SE 4 Cyl 2.3L
Product Details
Quantity Sold : Sold individuallyWarranty : 1-year or 12,000-mile Delphi limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is 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.

Condition : NewRecommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl., 2.0L Engine, Assembly -
Part Number: MRD3MF162
Guaranteed to Fit
$99.49
Vehicle Fitment
  • 2003 Ford Focus SE 4 Cyl 2.0L Assembly
  • 2003 Ford Focus LX 4 Cyl 2.0L Assembly
  • 2003 Ford Focus ZX5 4 Cyl 2.0L Assembly
  • 2003 Ford Focus SVT 4 Cyl 2.0L Assembly
  • 2003 Ford Focus ZX3 4 Cyl 2.0L Assembly
  • 2003 Ford Focus ZTS 4 Cyl 2.0L Assembly
  • 2003 Ford Focus ZTW 4 Cyl 2.0L Assembly
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is 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.

Condition : NewRecommended Use : OE Replacement
Mass Air Flow Sensor, 4 Cyl. -
Part Number: DELAF10128
Guaranteed to Fit
$121.49
Vehicle Fitment
  • 2003 Ford Focus ZX5 4 Cyl 2.0L Engine Vin: 3
  • 2003 Ford Focus ZX3 4 Cyl 2.0L Engine Vin: 3
  • 2003 Ford Focus ZTS 4 Cyl 2.0L Engine Vin: 3
  • 2003 Ford Focus SE 4 Cyl 2.0L Engine Vin: 3
  • 2003 Ford Focus ZTW 4 Cyl 2.0L Engine Vin: 3
  • 2003 Ford Focus LX 4 Cyl 2.0L Engine Vin: P
Product Details
Quantity Sold : Sold individuallyWarranty : 1-year or 12,000-mile Delphi limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is 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.

Condition : NewRecommended Use : OE Replacement
Page 1 of 2 | Showing 1 - 15 of 22 results

Top Rated Products

Popular Products

Helpful Automotive Resources

P2187 Code: System too Lean at Idle (Bank 1)
P2187 Code: System too Lean at Idle (Bank 1)Note that there is only one bank if your car has a straight engine and the scan tool will always refer to that bank as “Bank 1.” P2187 code indicates that your vehicle’s computer detected a potential issue with the fuel mixture at idle.
P0113 Code: Intake Air Temperature Sensor 1 Circuit High Input
P0113 Code: Intake Air Temperature Sensor 1 Circuit High InputThe code appears in a 1998 Honda Civic EX 1.6L because of the following conditions: IAT sensor signal circuit is open or shorted to voltage Damaged IAT sensor connector (check pins for damage, and for moisture) IAT sensor return circuit is open Failed IAT sensor has failed What is an Intake Air Temperature (IAT) Sensor
P2196 Code: O2 Sensor Signal Biased/Stuck Rich (Bank 1, Sensor 1)
P2196 Code: O2 Sensor Signal Biased/Stuck Rich (Bank 1, Sensor 1)The P2196 code indicates an issue in the oxygen sensor between the catalytic converter and the engine. Bank 1 refers to the side of the engine where the cylinder 1 is located.
P0104 Code: Mass Air Flow (MAF) “A” Circuit Intermittent / Erratic
P0104 Code: Mass Air Flow (MAF) “A” Circuit Intermittent / ErraticThis sensor is usually installed in the engine air intake tract downstream from the air filter. It measures the amount of air entering the engine by calculating its volume and density. A MAF sensor only measures a portion of intake air and uses this value to estimate the total volume
What Does Remanufactured Mean? VS Refurbished, Rebuilt, Reconditioned
What Does Remanufactured Mean? VS Refurbished, Rebuilt, ReconditionedA remanufactured part is usually a used OEM part that has been stripped down and had its worn components replaced with repaired or brand-new parts. Although it won’t be brand new, its quality and performance are equivalent to a brand new component. It also meets the manufacturer’s factory standards.
P0170 Code: Fuel Trim (Bank 1)
P0170 Code: Fuel Trim (Bank 1)Pro Tips are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.