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Holley EFI

Holley EFI 558-103 LS2/3/7+ (58x/4x) Engine Main Harness

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LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFI

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Holley EFI 558-103 LS2/3/7+ (58x/4x) Engine Main Harness

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$675.95
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This harness has been designed to interface with 58x crank and 4x cam sensors. These engines are commonly found in 2006+ Year Model vehicles with LS variants such as the: LS2,LS3,LS7,L76,L92, and L98.
Brand Holley EFI
Emission Code4
Product TypeEngine Main Harnesses
WarrantyManufacturer's Limited 90 Day (1 Year with Warranty Registration)
UPC090127666739
Manufacturer Part Number558-103
Part Number558-103
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 558-103
EFI selection chart
Wiring Diagram
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 558-103 LS2/3/7+ (58x/4x) Engine Main Harness
    Holley EFI 558-103 LS2/3/7+ (58x/4x) Engine Main Harness
    $675.95