Sale

Ignitions and Electrical Wiring Harnesses

Holley

EXTENDED LENGTH 58X LS MAIN HARNESS

$775.95 $695.68 Save $80.27

SKU: H00E 558-134

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

Part #: 558-134

These harnesses are designed to fit most 24x and 58x LS engines, from 1997-2012. They are a perfect fit for installers wanting to mount the any Holley EFI ECU inside of the passenger compartment where it is away from the elements, and easy to access.

Features:

  • Plug and play with Dominator, HP, Terminator X and Terminator X Max ECUs
  • Designed for use on 24x / 1x and 58x / 4x LS engines
  • 22" Extended length allows you to mount the ECU in a wide variety of locations, such as on a roll bar, or under the passenger seat

LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFI

Fitment

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Specifications

BrandHolley
Part NumberH00E 558-134
Weight5.67 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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