Exterior Components› Body Panels and Components
Holley
LS Coil On Plug Harness Universal
SKU: H00E 558-307
Moderate — 2–4 hours
Description
Part #: 558-307
Universal Coil On/Near Plug Harness - Use to connect Holley PN 558-312 or factory GM LSx coil harnesses to Holley HP or Dominator ECU's
Features:
- For use with Holley HP or Dominator ECUs
- Universal
- Connects 558-312 or factory GM LSx coil harnesses
For use with Holley (R) HP and Dominator ECUs and other EFI systems
MIA's Description
Fitment
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Holley |
| Part Number | H00E 558-307 |
| Weight | 1.15 lb |
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Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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