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Ignitions and Electrical› Wiring Harnesses

Holley

Engine Main Harness Ford 5.0L/5.8L

$633.95 $584.95 Save $49.00

SKU: H00E 558-128

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INSTALL DIFFICULTY
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Moderate — 2–4 hours

Overview

The Holley EFI 558-128 is a main wiring harness for Ford Foxbody 5.0L Mustangs.
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Part #: 558-128

This harness is for fuel injected small block ford engines, such as 5.0L, or 5.8L Windsor powerplants. Plug and play ignition capability with Dual Sync and HyperSpark Distributors, ignition adapter 558-305 is required for applications with a TFI distributor. The 5.0L Ford main harness is pre-terminated with Ford PWM IAC connector, for the OEM PWM - idle air control motor commonly found on late 80's and early 90's engines. Compatible with Holley EFI Dominator, HP, and Terminator X and X Max ECU's.

Features:

  • Designed for use with fuel injected small block ford engines, such as 5.0L, or 5.8L Windsor powerplants.
  • Plug and play ignition capability with Dual Sync and HyperSpark Distributors, for ignition adapter 558-305 is required for applications with a TFI distributor
  • Compatible with Holley EFI Dominator, HP, and Terminator X and X Max ECU's
  • Comes pre-terminated with Ford PWM IAC connector, for OEM PWM - idle air control motors
  • For use with OEM Ford fuel injectors, use injector harness 558-209.

Plug and Play with fuel injected 5.0L Small Block Ford Engines

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandHolley
Part NumberH00E 558-128
Weight4.1 lb

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