These Holley wiring harnesses are the main harness for your HP or Dominator ECU. If you have any questions, please contact us prior to purchasing.
- 558-101: Holley Stealth Ram Systems and factory GM TPI engines (speed density) – Avenger EFI, HP EFI & Dominator EFI
- 558-102: 24X crank and 1X rear mount cam sensor, connects to factory coil harnesses and all factory sensors – LS1/6 Engines 1997-2004
- 558-103: 58X crank and 4X front mount cam sensor, connects to factory coil harnesses and all factory sensors – 2006+ year model vehicles with LS variants
- 558-104: Fully terminated, designed for single plane style EFI intake manifolds and Holley MPFI intakes
- 558-105: Unterminated Universal Main Harness for HP EFI & Dominator EFI
- 558-108: Main Harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines
- 558-110: Ford Coyote (2011-2017) Main Harness with TI-VCT and stock camshaft
- 558-113: Main Harness for 99-04 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart Coils
- 558-115: Early Gen III Hemi with TPS and Idle Air Control Connections, for early crank & cam sensors
- 558-116: Late Gen III Hemi with TPS and Idle Air Control Connections, for late crank & cam sensors
- 558-117: Universal MPFI Coil On Plug Main Harness
- 558-118: Ford MPFI Coil On Plug Main Harness
- 558-122: Ford Coyote TI-VCT for Holley EFI Smart Coils & stock cam shaft (2011-2017)
- 558-124: Ford Coyote TI-VCT Sub Harness (2011-2012) with stock camshaft
- 558-125: Ford Coyote TI-VCT Sub Harness (2013-2017) with stock camshaft