MPA Electrical
Remanufactured

MPA Electrical 15420 Alternator

Brand MPA Electrical 15420
Amps 120 Amps
Clock 3:00
Fan Internal
Manufacturer Ford
Pulley 6 Groove Serpentine Clutch Pulley
Regulator Internal
Rotation Clockwise
Volts 12 Volts
Product line Remanufactured
Fits Ford · 2 vehicles

Remanufactured unit. Restored for dependable charging performance.

Internal regulator. Built with an integrated regulator for simpler replacement.

6-groove clutch pulley. Helps maintain smooth belt drive operation.

Cross-references AP Exhaust 8439, 1S7T-10300-AA and 1S7Z-10346-AA for the same application. See all 4.

$322.59Free shipping
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Remanufactured Alternator for Ford Focus

MPA Electrical Part Number 15420 is a remanufactured 120 amp alternator for 2003-2004 Ford Focus applications. It is built for 12-volt charging systems with an internal regulator, internal fan, clockwise rotation, and a 6-groove serpentine clutch pulley.

Use this alternator when you need a direct replacement for a Ford Focus charging system that matches the OE-style electrical and pulley configuration. Part number 15420 is also referenced by interchange numbers used for the same application.

Key Features

  • 120 amps output for 12-volt charging systems
  • Internal regulator and internal fan design
  • Clockwise rotation
  • 6-groove serpentine clutch pulley
  • 3:00 clock position
  • Remanufactured by MPA Electrical
  • Fits 2003-2004 Ford Focus, N/A

Product Details

This MPA Electrical remanufactured alternator is engineered for Ford Focus charging system replacement where the original unit uses a 120 amp, 12-volt configuration with an internal regulator and serpentine clutch pulley. The 3:00 clock position and clockwise rotation help match the original mounting and belt-drive layout. Part number 15420 is a practical replacement choice for 2003-2004 Ford Focus vehicles needing alternator service.

This part cross-references AP Exhaust 8439 for the same application.

Common Problems This Part Can Address

  • Battery warning light caused by alternator output loss
  • Low charging voltage at the battery
  • Dim lights or electrical instability while driving
  • Noise or wear related to a failing alternator pulley or internal components
  • Starting issues caused by insufficient charging performance

Installation Notes and Tips

Alternator replacement on the 2003-2004 Ford Focus requires 2 people. Refer to the repair manual for the correct removal and installation procedure before beginning service. Confirm pulley style, rotation, clock position, and electrical connector match the original unit before installation. Part number 15420 should be verified against the vehicle’s charging system specifications.

Quality Assurance

MPA Electrical remanufactured components are rebuilt for replacement use in automotive charging systems. This alternator is specified for Ford applications and should be matched to the vehicle’s original electrical and pulley requirements for proper fitment.

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionLitersCylindersPositionNotes
2004FordFocusManual2.3LL4N/AAlternator replacement requires 2 people; refer to repair manual for proper procedures.; Remanufactured
2003FordFocusManual2.3LL4N/AAlternator replacement requires 2 people; refer to repair manual for proper procedures.; Remanufactured
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 84391S7T-10300-AA1S7Z-10346-AA88864847