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Ignitions and Electrical Computers, Chips, Modules and Programmers

Holley

HARNESS KIT, LS2/3/7, 58X, BOSCH/JETRONI

$1,094.95 $1,001.57 Save $93.38

SKU: H00E 558-502

In Stock
In Stock
Ships by Jun 8
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Holley 558-502 EFI Harness Kit is designed for GM LS2, LS3, LS7 engines using a 58X reluctor and Bosch/Jetronic (EV1) injectors. It is compatible with Holley HP or Dominator ECUs and includes main power, LS1 main, and V-8 injector harnesses.

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.

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Specifications

BrandHolley
Part NumberH00E 558-502
Weight5.75 lb

Videos

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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