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Holley EFI

Holley EFI 558-504 Universal V8 MPFI EFI Harness Kit

Part # 558-504 Be the first to write a review

Universal V8 MPFI

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Holley EFI 558-504 Universal V8 MPFI EFI Harness Kit

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$899.95
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An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Holley's Holley EFI Harness Kit comes complete with the main harness, power harness and injector harness to support your primary system!

Features:

  • Harness Kit Includes; Main Power Harness, Universal MPFI Main Harness, v-8 Injector Harness
  • Simple installation
  • Works with HP or Dominator ECU's
Brand Holley EFI
Emission Code4
Product TypeEFI Harnesses
WarrantyManufacturer's Limited 90 Day (1 Year with Warranty Registration)
UPC090127721353
Manufacturer Part Number558-504
Part Number558-504
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# 558-504
EFI selection chart
<b> NOTICE: You will need to purchase an ECU and O2 Sensor to make this a complete kit.
Manufacturer's Limited 90 Day (1 Year with Warranty Registration): See Details
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    Some parts are not legal for use in California or other states with similar regulations.

    Holley EFI 558-504 Universal V8 MPFI EFI Harness Kit
    Holley EFI 558-504 Universal V8 MPFI EFI Harness Kit
    $899.95