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Holley EFI

5.0L Ford Engine Main Harness

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

Part # 558-128 Be the first to write a review

5.0L Ford Engine Main Harness

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$502.95
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4

Emissions

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

    See Emissions Details

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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.

About Holley EFI

Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!

Brand Holley EFI
Emission Code4
Harness ApplicationFord
Harness TypeMain
Product Type5.0L Ford Main Harness
Sale CategoryAir and Fuel Delivery
UPC090127074428
Part Number558-128
4

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Instructions for Part# 558-128
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    Some parts are not legal for use in California or other states with similar regulations.