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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Does it fit my engine?

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