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Holley EFI

Holley EFI 558-506 EFI Harness Kit

Part # 558-506 Be the first to write a review

Compatible with 1999-2004 Ford® Modular 4 Valve Engines. This product is not created or sold by Ford®.

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Holley EFI 558-506 EFI Harness Kit

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This wiring harness interfaces a Holley EFI ECU to a 4V Ford Modular 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.

Features:

  • Harness Kit Includes: Main Power Harness, Ford Modular Main Harness, Ford V8 Injector Harness, Ford Modular 4V Coil Harness, Coil Drivers
  • Simple Installation
  • Can be used with HP or Dominator ECU's
Brand Holley EFI
Emission Code4
Product TypeEFI Harnesses
UPC090127721384
Manufacturer Part Number558-506
Part Number558-506
4

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

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    Some parts are not legal for use in California or other states with similar regulations.