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Ignitions and Electrical› Wiring Harnesses

Holley

TPI Stealth Ram Main Harness

$731.95 $674.05 Save $57.90

SKU: H00E 558-101

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

Moderate — 2–4 hours

Description

The Holley 558-101 TPI/Stealth Ram Main Harness is a replacement wiring harness for Holley Avenger EFI, HP EFI, and Dominator EFI fuel injection systems when used with TPI or Stealth Ram intake manifolds. It features multi-port fuel injection style and speed density metering, providing reliable connections for optimal system performance.

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 558-101
Weight3.05 lb

Videos

Holley - EFI Tech: Main Harness Overview

Holley - EFI Tech: Main Harness Overview
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Derek 68 Camaro SBC 350 EFI MS2 stealth ram- Buddha Paint

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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