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Holley Ford Modular 4 Valve EFI Harness Kit 558-506

Injector Harness | For Use w/Ford 4V Modular V8 Engines | Incl. Main Power Harness/Injector Harness/Coil Harness Drivers
Pricing: $825.27


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.


  • 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

1999-2004 Ford Modular 4 Valve Harness Kit

Made in the USA!


  • 558-506
  • 558-506
  • 00090127721384
  • Holley
  • New

Shipping Information

  • Item Requires Shipping
  • 6.7 lbs.
  • W14.6000” x H15.2000” x L4.5000”

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