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Wiring System - Engine Wiring fit your 2003 Ford Focus 4 Cyl 2.3L 5-Speed Manual Transmission
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2003 Ford Focus
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4 Cyl 2.3L; 5-Speed Manual TransmissionVehicle Options
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- Wiring System - Body Wiring
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- Wiring System - Engine Wiring
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Parts Questions
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Recommended
Part No. & Part Description
Price & Qty.
Part No. &
Part Description
Part Description
- RELAY ASY.
F5TZ-14N089-B
Relay module- Battery Saver
Dimmer relay
Fuel Pump
Horn
Wiper - Base Number: 13A025D
- Callout Name: 14N089
- Replaced By: 5M5Z-14N089-BA
$13.63 $9.571 
FOAZ-14N089-A
Relay module- Cooling Fan (high speed)
Relay - decklid, Type 12
Relay - heated backlight, Type 12
Relay - starter, Type 12 - Base Number: 13A025
- Callout Name: 14N089
- Replaced By: 5M5Z-14N089-A
$25.00 $16.621
$13.63 $9.571
$28.33 $19.381
XS4Z-14N089-AA
Relay- 61, 74, wiper relay front and rear
- Location: Front And Rear
- Callout Name: 14N089
- Replaced By: 5M5Z-14N089-BA
$13.63 $9.571
- SENSOR ASY. (AIR FLOW)
3W4Z-12B579-AB
Sensor Assy- The housing that this mounts into is only serviced with the 9600., 2.3L, PZEV
- Callout Name: 12B579
- Replaced By: 3W4Z-12B579-AC
$158.00 $99.741 
-W709287-S300
Bolt- Attaches MAFS (12B579)., 2.3L, PZEV
- Require Quantity: 2
- Package Quantity: 4
- Base Number: HB1
- Callout Name: 12B579
$4.25 $2.494
C2DZ-17271-H
GEAR (DRIVEN IDENTIFICATION CHART)Gear - Driven- Teeth: 20, Material: Nylon, Color: Blue
- Base Number: 17271
- Callout Name: 17271
- BRACKET (RELAY MOUNTING)
$17.00 $13.731 
YS4Z-14A301-KA
Bracket - Relay- For fixing ABS sensor wire at apron RHS
- Fit Note: 54
- Base Number: 14A301
- Callout Name: 14A301
$18.75 $13.731
- YS4Z-14A301-JA
Bracket - Relay- For fixing ABS sensor wire at apron lhs
- Base Number: 14A301
- Callout Name: 14A301
1S7Z-9278-AA
GAUGE ASY. (OIL PRESSURE ENGINE UNIT)Switch Assy - Oil Pressure- Fit Note: 4 Cyl 2.3L
- Base Number: 9278
- Callout Name: 9278
- Replaced By: BE8Z-9278-A
$3.75 $2.411
$147.91 $106.481
- SENSOR ASY. (THROTTLE POSITION)
-W704447-S303
Screw- Screw to attach TPS.
- Require Quantity: 2
- Package Quantity: 4
- Base Number: HS1
- Callout Name: 9B989
$1.63 $0.95 
YS4Z-9B989-BB
Potentiometer - Engine Throttle- 4V,M/T, PZEV
- Fit Note: 4 Cyl 2.3L
- Base Number: 9B989
- Callout Name: 9B989
$57.64 $36.77
1S7Z-10346-BC
ALTERNATOR ASY.Alternator Assy- 110 amp Reman,Includes Pulley and Regulator;(NOTE: Contains no servicable parts;Refer to oasis message on 6G alternators.), 2.3L 4V DOHC EFI I4
- Fit Note: 2.3L
- Callout Name: 10346
- Replaced By: 1S7Z-10346-BE
- WIRE ASY. (ENGINE CONTROL SENSOR)
3S4Z-12A581-GRT
Wire Assy- 4 row connector for 9D930., M/T, BEFORE 9/15/03
- Fit Note: 4 Cyl 2.3L
- Base Number: 12A581
- Callout Name: 12A581
- 3S4Z-12A581-GRY
Wire Assy- 2 row connector for 9D930., M/T, FROM 9/15/03
- Fit Note: 4 Cyl 2.3L
- Base Number: 12A581
- Callout Name: 12A581
- 3S4Z-12A581-GSS
Wire Assy- 4 row connector for 9D930. , A/T, BEFORE 9/15/03
- Fit Note: 4 Cyl 2.3L
- Base Number: 12A581
- Callout Name: 12A581
- 3S4Z-12A581-GST
Wire Assy- 2 row connecter for 9D930, A/T, FROM 9/15/03
- Fit Note: 4 Cyl 2.3L
- Base Number: 12A581
- Callout Name: 12A581
- WIRING ASY. (ENGINE CONTROL SENSOR EXTENSION)
- WIRE ASY. (DASH TO ENGINE GAUGE FEED)
3S4Z-14289-JDH
Wire Assy- W/o AdvanceTrac, w/ ABS, w/ speed control
- Fit Note: 4 Cyl 2.3L
- Base Number: 14289
- Callout Name: 14289
- 3S4Z-14289-JRE
Wire Assy- W/o AdvanceTrac, w/o ABS, w/o speed control
- Fit Note: 4 Cyl 2.3L
- Base Number: 14289
- Callout Name: 14289
- 3S4Z-14289-JSE
Wire Assy- W/o AdvanceTrac, w/o ABS, w/ speed control
- Fit Note: 4 Cyl 2.3L
- Base Number: 14289
- Callout Name: 14289
- CABLE ASY. (BATTERY TO GROUND)
3S4Z-14300-AB
Cable Assy- Positive cable, includes 175 amp integrated fuse
- Fit Note: 4 Cyl 2.3L
- Base Number: 14300
- Callout Name: 14301
- WIRING ASY. (FUEL CHARGING)
3S4Z-9D930-AA
Wire Assy- 4 row connector for the 12A581., BEFORE 9-15-03
- Fit Note: 4 Cyl 2.3L
- Base Number: 9D930
- Callout Name: 9D930
- 3S4Z-9D930-AN
Wire Assy- 2 row connector for the 12A581., FROM 9-15-03
- Fit Note: 4 Cyl 2.3L
- Base Number: 9D930
- Callout Name: 9D930
Genuine Ford Parts, the Right Choice
FordPartsGiant.com offers the wholesale prices for genuine 2003 Ford Focus parts. Parts like Wiring System - Engine Wiring are shipped directly from authorized Ford dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 4 Cyl 2.3L. Transmission: 5MT.