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Ford Modular 2 Valve EFI Harness Kit

1999-2004 Ford Modular 2 Valve Harness Kit

PART# 558-505

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$1,057.00   Suggested Retail
$855.86   Holleydays Price
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This wiring harness interfaces a Holley EFI ECU to a 2V Modular Ford engine. It is meant to be used in conjunction with an injector harness, a coil harness, and ignition modules. Most stock sensors are used with this harness.


  • Harness Kit Includes: Main Power Harness, Ford Modular Main Harness, Ford V-8 Injector Harness, Ford Modular 2V Coil Harness, Coil Drivers
  • Simple Installation
  • Can be used with HP or Dominator ECU's


BrandHolley EFI
Emission Code4
Harness ApplicationFord
Ignition Type2v Ford Modular
Injector ConnectorJetronic / Minitimer (Bosch)
Product TypeHarness Kit
Part Number558-505



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Tech Resources

Holley EFI Dealers
Do you need a custom kit built for your application? Do you need a system installed and tuned? Click here to find the Holley EFI dealer in your area!
NOTICE: You will need to purchase an ECU and O2 Sensor to make this a complete kit. This kit is meant to be used in conjunction with an injector harness, a coil harness and ignition modules.
Software and firmware updates can be downloaded here for free.
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