BUY NOW, PAY LATER. Starting at 0% APR 
Universal MPFI Main Harness
$643.95
$611.75
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
$643.95
$611.75
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 and 4V Modular Main Harness
$956.95
$909.10
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.
Main Engine Harness for 24x LS w/ TBI
$843.95
$801.75
GVMR_558-111
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
This harness is used with Dominator, HP, Terminator X, and Terminator X Max when using a Terminator or Terminator Stealth throttle body injection unit...
Main Engine Harness for 58x LS w/ TBI
$818.95
$778.00
GVMR_558-112
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Intended for use with Dominator, HP, Terminator X, and Terminator X Max ECU's when using a Terminator or Terminator Stealth throttle body injection unit...
Holley EFI GM Drive-By-Wire Harness
$292.95
$278.30
GVMR_558-406
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Dominator EFI GM Drive-By-Wire Harness
Dominator EFI GM Dual Drive-By-Wire Harness
$449.95
$427.45
GVMR_558-411
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Dominator EFI GM Dual Drive-By-Wire Harness
LS2/3/7+ (58x/4x) Engine Main Harness
$760.95
$722.90
GVMR_558-103
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
This harness has been designed to interface with 58x crank and 4x cam sensors. These engines are commonly found in 2006+ Year Model vehicles...
CAN Extension Harness - 8'
$78.95
$75.00
GVMR_558-425
Air and Fuel Delivery
Best Sellers
Fuel Injection Harness
Wire, Cable and Related Components
Can Extension Harness (for Racepak and other external CAN drives)
CAN EXTENSION HARNESS, 12FT
$94.95
$90.20
GVMR_558-426
Air and Fuel Delivery
Best Sellers
Fuel Injection Harness
Wire, Cable and Related Components
CAN Extension Harness (for Racepak and other external CAN drives)
CAN Extension Harness - 9''
$63.95
$60.75
GVMR_558-428
Air and Fuel Delivery
Best Sellers
Fuel Injection Harness
Wire, Cable and Related Components
Can Extension Harness (for Racepak and other external CAN drives)
V8 over Manifold, Bosch Style Injector Harness
$239.95
$227.95
GVMR_558-200
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
V8 over Manifold, Bosch Style Connector Harness for Avenger EFI, HP EFI, Dominator EFI and Terminator X. GM / Chrysler Cylinder Orientation
TPI/Stealth Ram Main Harness
$760.95
$722.90
GVMR_558-101
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
TPI/Stealth Ram™ Main Harness for Avenger EFI, HP EFI & Dominator EFI
Holley EFI Ford GT500 and 3V Drive-by-Wire Throttle Body Harness
$562.95
$534.80
GVMR_558-461
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Introducing a new Holley EFI DBW Throttle Body wiring harness for the OEM (Original Equipment Manufacturer) Ford Throttle Body commonly found on 2005-2010 Mustang...
CAN Adapter Harness, 12"
$52.44
$49.82
GVMR_558-451
Air and Fuel Delivery
Best Sellers
Fuel Injection Harness
Wire, Cable and Related Components
12" Male to Female CAN Adapter Harness (for Racepak and other external CAN devices)
CAN Adapter Harness, 4'
$63.95
$60.75
GVMR_558-452
Air and Fuel Delivery
Best Sellers
Fuel Injection Harness
Wire, Cable and Related Components
4" Male to Female CAN Adapter Harness (for Racepak and other external CAN devices)
CAN Adapter Harness, 8'
$78.95
$75.00
GVMR_558-453
Air and Fuel Delivery
Best Sellers
Fuel Injection Harness
Wire, Cable and Related Components
8' Male to Female CAN Adapter Harness (for Racepak and other external CAN devices)
Holley EFI EV6 Unterminated Injector Harness Kit
$178.95
$170.00
GVMR_558-216
Air and Fuel Delivery
Fuel Injection Harness
Wire, Cable and Related Components
Introducing the latest addition to the Holley EFI Product Lineup! Our EV6 unterminated injector harness is perfect for anyone wanting to add EV6 injectors...
