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Vehicle Info NeededHOLLEYPART NUMBER: 510-558-307
Universal Coil-On-Plug Ignition Harness for HP and Dominator EFI
$19995
1 left in stock
Ships on Sep 08, 2026
Lowest Price GuaranteeIgnition Harness
Universal Coil-On-Plug Ignition HarnessHolley HP and Dominator EFI Systems Connects Holley 558-312 or GM LSx Coil Harness Coil-On-Plug and Coil-Near-Plug Setups Pre-Terminated ECU Pins, Extra Pins Included For Odd/Even-Bank V8 Engines
This universal ignition harness adds coil-on-plug and coil-near-plug trigger wiring to a Holley HP or Dominator EFI system, connecting a Holley 558-312 or factory GM LSx coil harness with pre-terminated ECU pins.
Holley 558-307 Highlights:
- Works with Holley HP and Dominator EFI systems.
- Connects Holley 558-312 or GM LSx coil harnesses.
- For coil-on-plug and coil-near-plug setups.
- Pre-terminated ECU pins with extra pins included.
- Designed for odd/even-bank V8 engines.
Part TypeIgnition Wire Harness
BrandHOLLEY
Package Height3.7
Package Width10.7
Package Length11.2
Weight1.39 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number558-307
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
