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Injector Driver Harness

PART# 558-219

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The Holley EFI Injector Driver Harness comes pre-terminated with a J2B connector, for plug and play connectivity with your Dominator ECU. This harness is designed to be used with the "custom" staged injection strategy in Holley EFI V5 software. Includes CAN connectors, allowing you to quickly diagnose any issues over the CAN network.


  • Designed to work with the Holley EFI 554-143 injector driver module, and a 554-114 Dominator ECU.
  • Techflex F6 loomed harness provides protection from engine bay dirt and grime, while matching your Holley EFI harness for a clean installation.
  • Plug and play pre-termination allows you to quickly update your installation to 16+ injectors.
  • Allows you to easily add a second set of injectors by utilizing Holley EFI V5 and up with Custom Staged Injection strategies.


BrandHolley EFI
Emission Code6
Product TypeHarness
Part Number558-219



Vehicle emissions regulations are not applicable to this item.

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