Holley EFI

LS2/3/7+ (58x/4x) Engine Main Harness

Part # 558-103 Be the first to write a review

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

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Advertised Price $649.95

$583.95

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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

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.

Features:

Plug and play with Dominator, HP, Terminator X and Terminator X Max ECU's

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
Category	Fuel Injection - EFI
Crank Reluctor	58x
Emission Code	4
Harness Application	LSX
Harness Type	Main
Product Type	LS Main Engine Harness
UPC	090127666739
Part Number	558-103

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

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Instructions - 558-103_main_harness_diagram.pdf

Instructions - 199r10597rev2.pdf