Holley | Fuel Injection Wire Harness

Name: Holley | Fuel Injection Wire Harness
Brand: Holley
SKU: 558-103
Price: 912.19 CAD
Availability: InStock

Part #: 558-103

Holley | Fuel Injection Wire Harness 558-103 | GM LS2/3/7+ engines, 58x crank/4x cam sensors, compatible HP EFI and Dominator EFI | Universal

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Holley – Fuel Injection Wire Harness (LS2/3/7+)

Description

The Holley Fuel Injection Wire Harness 558-103 is designed for second-generation GM LS engines using 58x crank and 4x cam sensors. It is compatible with LS2, LS3, LS7, L76, L92, and L98 variants, commonly found in 2006+ vehicles. This main harness interfaces directly with Holley HP EFI and Dominator EFI systems, enabling a clean and complete installation. Ideal for LS engine conversions in performance, restoration, and high-performance swap projects.

Specifications

Brand: Holley
Part Number: 558-103
Type: EFI Main Harness
Engine Application: GM LS2, LS3, LS7, L76, L92, L98
Crank Sensor: 58x Reluctor
Cam Sensor: 4x
ECU Compatibility: HP EFI, Dominator EFI
Material: Billet Aluminum (connector housing)
Vehicle Compatibility: See Application Section
Condition: New
Sold and shipped by GBP Performance

Note:

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Compatibility (Application)

Make	Model	Years	Engine	Notes
GM (Universal)	–	2006+	LS2 / LS3 / LS7 / L76 / L92 / L98 (58x Crank, 4x Cam)	Compatible with HP EFI and Dominator EFI; not vehicle-specific

Brand: Holley

Reference: 558-103

UPC: 90127666739

Data sheet

In Stock: In Stock

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