Holley EFI 558-307 Universal Coil On/Near Plug Harness

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For use with Holley® HP and Dominator ECUs and other EFI systems Universal Coil On/Near Plug Harness – Use to connect Holley PN 558-312 or factory GM LSx coil harnesses to Holley H P or Dominator ECU's Features: For use with Holley HP or Dominator ECUs Universal Connects 558-312 or factory GM LSx coil harnesses Show more