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For Dominator, HP, Terminator X and Terminator X Max ECU's
$775.95
$672.95
GVMR_558-134
Engine
Engine Wiring Harness
Wire, Cable and Related Components
This harness is designed to fit LS2/3/7+ engines from 1997-2012. The harness interfaces with 58x crank and 4x cam sensors. Harness is a perfect...
Plug and Play with fuel injected 5.0L Small Block Ford Engines
$633.95
$549.95
GVMR_558-128
Engine
Engine Wiring Harness
Wire, Cable and Related Components
This harness is for fuel injected small block ford engines such as 5.0L or 5.8L Windsor powerplants. Plug and play ignition capability with Dual...
50 Feet, Black, 1/8" Braided F6 Split Wire Loom
$45.53
$39.48
GVMR_573-101
Best Sellers
Hardware and Service Supplies
Wire Conduit
Wire, Cable and Related Components
Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one stop solution for all of your wiring components needs....
Universal V8 MPFI EFI Harness Kit
$979.95
$849.95
GVMR_558-504
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important...
1999-2004 Ford Modular 2 Valve Harness Kit
$1,743.95
$1,499.95
GVMR_558-505
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
This wiring harness interfaces a Holley EFI ECU to a 2V Modular Ford engine. It is meant to be used in conjunction with an...
Evenly spaced Ford V8 Injector Harness for Jetronic "Bosch EV1" style Injectors
$230.95
$199.95
GVMR_558-213
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Ford V8 Injector Harness for Jetronic "Bosch" style Fuel Injectors (Evenly Spaced)
HP EFI ECU & Harness Kits
$3,543.95
$3,149.95
GVMR_550-616
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Looking for a plug and play kit for your Ford Modular engine? The HP ECU allows you to accurately control the fuel and ignition...
HP EFI ECU and Harness Kits
$3,824.95
$3,399.95
GVMR_550-616N
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Looking for a plug and play kit for your Ford Modular engine? The HP ECU allows you to accurately control the fuel and ignition...
HP EFI ECU and Harness Kits
$3,543.95
$3,149.95
GVMR_550-617
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Looking for a plug and play kit for your Ford Modular engine? The HP ECU allows you to accurately control the fuel and ignition...
Universal Ford V8 Harness Kit
$906.95
$786.95
GVMR_558-508
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Universal Ford V8 Harness Kit for Holley HP and Dominator ECU's
Universal 4 Cylinder EV14 Injector Harness for HP EFI & Dominator EFI
$138.95
$119.95
GVMR_558-440
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
This Universal 4 Cylinder EV14 Injector Harness is designed to be plug and play with HP EFI & Dominator EFI Systems, utilizing our 205...
GM LS1/6, 24X Crank Sensor, Bosch Injector
$1,153.95
$999.95
GVMR_558-500
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important...
Unterminated 16 Injectors MPFI Harness
$345.95
$306.95
GVMR_558-207
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Unterminated 16 injectors MPFI harness Terminated at injector connectors (Bosch style). Harness must be assembled and require crimping Metripak150 connectors. Includes all connectors, pins,...
GM LS2/LS3/LS7, 58X Crank Sensor, Bosch Injector
$1,094.95
$949.95
GVMR_558-502
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important...
GM TPI and Stealth Ram EFI Harness Kit
$979.95
$849.95
GVMR_558-503
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important...
Evenly spaced Ford V8 Injector Harness for USCAR / EV6 style Injectors
$224.95
$194.95
GVMR_558-212
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Ford V8 Injector Harness for Ford USCAR / EV6 style Fuel Injectors (Evenly Spaced)
NEW DEVICE TO TWO PIN MAIN HARNESS
$48.40
$41.97
GVMR_558-430
Air and Fuel Delivery
Best Sellers
Fuel Injection Harness
Wire, Cable and Related Components
The Holley EFI Can Adapter/Power Harness adapts two pin Holley main harness CAN connectors to new style 4 pin CAN devices.
LS MULTEC 2 INJECTOR HARNESS - EARLY TRUCK
$316.95
$274.95
GVMR_558-214
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
LS MULTEC 2 INJECTOR HARNESS - EARLY TRUCK
50 Feet, Black, 1/4" Braided F6 Split Wire Loom
$75.95
$65.85
GVMR_573-103
Best Sellers
Hardware and Service Supplies
Wire Conduit
Wire, Cable and Related Components
Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one stop solution for all of your wiring components needs....
10 Feet, Black, 3/8" Braided F6 Split Wire Loom
$22.74
$20.21
GVMR_573-104
Best Sellers
Hardware and Service Supplies
Wire Conduit
Wire, Cable and Related Components
Introducing the Holley EFI Wiring Shop. We have one goal, to provide you a one-stop solution for all of your wiring components needs. From...
Plug and Play with Dominator ECU
$359.95
$312.95
GVMR_558-219
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
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...
Gen III HEMI Main Harness Late w/ TPS and Idle Air Control Connections
$922.95
$799.95
GVMR_558-116
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Gen III HEMI Harness with TPS and Idle Air Control Connections. This wiring harness interfaces a Holley EFI ECU to a Gen III HEMI...
Holley EFI Transmission Control Harness - GM 4L60 (Pre-2009) and 4L80
$345.95
$299.95
GVMR_558-405
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Expanding our transmission control options for our EFI systems, this harness provides plug and play for Pre-2009 GM 4L60 and 4L80 transmissions using a...
Holley EFI GM Drive-By-Wire Harness - Early Truck
$310.95
$269.95
GVMR_558-429
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Terminator X Max and Dominator EFI GM DBW Harness-Early Truck. Compatible with GM part number 10379038.
Gen III Hemi Main Harness Early w/ TPS and Idle Air Control Connections
$979.95
$849.95
GVMR_558-115
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
This wiring harness interfaces a Holley EFI ECU to a Gen III HEMI engine with an aftermarket cable actuated throttle body. It is meant...
LSx Injector Harness for HP EFI, Dominator EFI and Terminator X.
$205.95
$178.95
GVMR_558-201
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
LSx Injector Harness for HP EFI, Dominator EFI and Terminator X.
Universal 6 Cylinder Injector Harness for HP EFI & Dominator EFI
$245.95
$212.95
GVMR_558-203
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Universal 6 Cylinder Injector Harness for HP EFI & Dominator EFI
Universal Unterminated Injector Harness
$259.95
$226.15
GVMR_558-204
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Universal Unterminated Injector Harness for HP EFI & Dominator EFI(Bosch EV1 style).
2011-2017 Ford Coyote Drive-By-Wire Harness
$317.95
$275.95
GVMR_558-422
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Drive-By-Wire harness for 2011-2017 Ford Coyote (5.0L) engines
Ford V8 Injector Harness for HP EFI & Dominator EFI
$287.95
$255.95
GVMR_558-209
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Ford V8 Injector Harness for HP EFI & Dominator EFI
Gen III HEMI V8 Injector Harness - Bosch/Jetronic and Holley injectors
$215.95
$191.95
GVMR_558-211
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
An Injector Harness is required and Holley offers two. The harness with USCAR/Stock injector connectors will cover most applications that are using the factory...
LS1/6 Main Harness for HP EFI & Dominator EFI
$731.95
$632.95
GVMR_558-102
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
This harness is designed for LS1/6 Engines, from 1997-2004. This harness interfaces with 24x Crank and 1x Cam sensors.
HP EFI ECU & Harness Kits
$3,824.95
$3,399.95
GVMR_550-617N
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Looking for a plug and play kit for your Ford Modular engine? The HP ECU allows you to accurately control the fuel and ignition...
Universal MPFI Main Harness for HP EFI & Dominator EFI
$618.95
$528.95
GVMR_558-104
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Universal MPFI Main Harness for HP EFI & Dominator EFI
Unterminated Universal Main Harness for HP EFI & Dominator EFI
$618.95
$528.95
GVMR_558-105
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Unterminated Universal Main Harness for HP EFI & Dominator EFI
Ford 2V & 4V Modular Main Harness, For HP EFI & Dominator EFI
$899.95
$799.95
GVMR_558-108
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Main harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines.
