Holley Big Wire IGN1A Smart Coil Kit w/Harness 556-128

Original price was: $987.00.Current price is: $839.66. Each



Introducing the Holley EFI Big-Wire Coil Near Plug Kit containing everything you need to upgrade your ignition system to handle 5.5+ HP per Cubic Inch


  • “Big Wire” Sub Harness- Pre wired with 12ga Power and Grounds, for optimal performance!
  • Peak Voltage – 44,000 Volts
  • Peak Output – 102 Mj
  • Maximum Battery Voltage 17.0 Volts
  • Upgrading a Non C-N-P Main Harness requires the Holley Universal Coil-On-Plug Harness, P/N 558-307 to complete the installation!
  • Contains two Terminated Sub-Harnesses, and Eight Holley Smart Coils, 3 ft. of wiring loom for a professional appearing installation!
  • Sub Harness features Fully Terminated Coil Connectors, a 7 Pin Metripak Connector used on several Holley EFI C-N-P Main Harnesses, and 3 loose wires for a quick installation!
Category: Tag:


There are no reviews yet.

Be the first to review “Holley Big Wire IGN1A Smart Coil Kit w/Harness 556-128”