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Ignitions and Electrical› Ignition Components

Holley

Coil-Near-Plug Sub Harness - Big Wire

$330.95 $293.95 Save $37.00

SKU: H00E 558-318

In Stock
In Stock
Ships by Jun 7
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

This "Big Wire" Sub Harness is pre-wired with 12ga power and grounds for optimal performance. It's designed for use with Holley HP and Dominator ECUs, as well as other EFI systems that can drive smart ignition coils. While designed for high-powered race applications, it can also be used on street-driven vehicles.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

BrandHolley
Part NumberH00E 558-318
Weight1.9 lb

Videos

Holley EFI Big Wire Coil-Near-Plug Smart Coil Kit

Holley EFI Big Wire Coil-Near-Plug Smart Coil Kit
Holley 558-307 Universal Coil On/Near Plug ignition harness- How To wire it into the Terminator X!

Holley 558-307 Universal Coil On/Near Plug ignition harness- How To wire it into the Terminator X!
How To Maximize Your Ignition Output with MSD Smart Coil Big Wire Kits

How To Maximize Your Ignition Output with MSD Smart Coil Big Wire Kits
Smart Coil Connectors - How to Install

Smart Coil Connectors - How to Install

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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