Holley - Main Harness

Item #558-100
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Holley - Main Wiring Harness (All Systems)

These Holley wiring harnesses are the main harness for your HP or Dominator ECU. Different harnesses available for your specific setup:

  • 558-100: Designed for Holley 4bbl TBI Systems
  • 558-101: Designed for Holley Stealth Ram Systems and factory GM TPI engines (speed density)
  • 558-102: Designed for 24x crank and 1x rear mount cam sensor. Connects to factory coil harnesses and all factory sensors
  • 558-103: Designed for 58x crank and 4x front mount cam sensor. Connects to factory coil harnesses and all factory sensors
  • 558-104: Fully Terminated. Designed for single plane style EFI intake manifolds and Holley MPFI intakes.
  • 558-105: 15' harness length. Fully terminated and populated at ECU connections only. User must terminate all sensor ends. Includes a variety of sensor connectors and pins but end user may have to supply sensor pins and connectors suited for their specific application
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