- Fuel, Carbs & Intakes
- Fuel Injection
- Holley Avenger#, HP#, Terminator and Dominator EFI Wiring Harnesses
Complete All Your Holley EFI Wiring Needs
Holley EFI wiring harnesses are compatible with Holley's Avenger#, HP#, Terminator#, and Dominator EFI Systems. EFI harnesses for various Holley systems can consist of the main harness#, transmission harness (if applicable)#, injector harness#, ignition/coil harness#, throttle body harness#, and auxiliary harnesses to access features of your Holley EFI system.
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AVAILABILITY
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PART TYPE
PART TYPE
BRAND
BRAND
RATING
Part Category
Part Fitment
Vendor Part Number
Thread Adapter Fittings Included
Universal
Fuel Injection System Component Type
Wire Connector Style
Engine Management System Component Type
Type
Injection Style
PRICE
Auxiliary Harness
Bench Test Harness
Conductor Cable
Dominator EFI DBW Harness
$220.95
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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$220.95
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
FREE Shipping
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Ignition Harness
Holley 558-312
Holley HP Smart Coil Ignition Harness For Use With Holley HP & Dominator ECU & Other EFI Systems
$204.95
Ships Tomorrow
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Holley 558-321
Holley 558-3321 Factory Replacement Ignition Coil Harness for GM LS Engines w/OEM Ignition Coils
$174.95
(3)
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
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$174.95
(3)
Estimated to ship direct from manufacturer on 06/04/24, pending manufacturer availability.
Lowest Price Guarantee
Injector Harness
Main Harness
Misc. Wiring Harnesses
Terminator X EFI DBW Harness
Holley 558-469
Holley 558-469 Terminator X EFI Ford Drive-By-Wire (DBW) Harness for 2018-2022 Ford Engines
$249.95
Ships Monday
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