Shop holley Dominator EFI Harness products
Dominator EFI Main Power Harness
This Harness is required with HP or Dominator ECUs. Includes, 13' long, 10 AWG main power harness, Qty. (2) 3/8" ring terminals and shrink tube (not pictured) . The harness is fuse protected and covered in braided split loom for additional abrasion protection .
Dominator EFI Auxiliary Harness
Used when adding a second wide band oxygen sensor to a Dominator EFI installation.
- J2A Connector
- #2 Wide band oxygen sensor harness (Fully Terminated)
- 23 user programmable input wires with pre-crimped ECU pins
Dominator EFI Over Manifold Injector Harness
V8 over Manifold, Bosch Style Connector Harness for Avenger EFI, HP EFI & Dominator EFI
Dominator EFI LS1/LS6 24X/1X Main Engine Harness
This harness is designed for LS1/6 Engines, from 1997-2004. This harness interfaces with 24x Crank and 1x Cam sensors.
Dominator EFI LS Main Harness to LS3 Style MAP Sensor Adapter
Holley EFI LS main harnesses have a MAP sensor connecter designed for use with an LS1/2 style MAP sensor. The 558-416 is an adapter harness that can be used to adapt any LS harness that uses an LS1/2 MAP sensor connection to an LS3 MAP. Also great for use with LS Hi-Ram intakes that require an LS3 MAP sensor.
Dominator EFI GM 4L60/80E Transmission Harness
GM 4L60/80E Transmission Harness - Complete terminated harness with j4 connector to operate GM electronic transmissions. for Dominator EFI
Dominator EFI LS2/3/7 58X/4X Main Engine Harness
This harness has been designed to interface with 58x crank and 4x cam sensors. These engines are commonly found in 2006+ Year Model vehicles with LS variants such as the: LS2,LS3,LS7,L76,L92, and L98.
Dominator EFI LS Coil Harness
Are you tired of scouring the junkyard for stock ls coil sub harnesses? Introducing the new Holley EFI LS Coil Sub Harness. This coil sub harness is intended to be used with factory LS coils and various Holley EFI main harnesses with Coil-on-plug connectors. The Holley EFI LS coil sub harnesses are built with the same high quality connectors and wire loom found on all Holley EFI harnesses, guaranteeing a perfect match in your engine bay.
- OEM connectors provide a secure connection between your ECU and Ignition Coils
- Techflex F6 braided wire loom keeps your engine bay looking clean, while providing abrasion resistance
- Plug & Play fitment
- Can be used to replace a damaged factory coil harness
Dominator EFI Universal V8 MPFI Harness Kit
An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes complete with the main harness, power harness and injector harness to support your primary system!
- Harness Kit Includes; Main Power Harness, Universal MPFI Main Harness, v-8 Injector Harness
- Simple installation
- Works with HP or Dominator ECU's