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Holley EFI 558-506 HARNESS KIT, FORD MODULAR 4V

Original price was: $976.17.Current price is: $713.34.

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SKU: HOL558-506 Category:

Injector Harness; For Use w/Ford 4V Modular V8 Engines; Incl. Main Power Harness/Injector Harness/Coil Harness Drivers;


This wiring harness interfaces a Holley EFI ECU to a 2V or 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.

  • Simple Installation
  • For HP EFI/Dominator EFI Systems