Injector Driver Harness 558-219
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You have 30 days to request a return. All sale items are final sale.
Features:
- 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.
About Holley EFI

Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!
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