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Holley EFI Systems Wiring Harnesses 558-104 Harnesses, EFI, Replacement, Main Harness, Multi-port Fuel Injection, for HP, Dominator, Systems, Universal, Each

Holley EFI Systems Wiring Harnesses 558-104 Harnesses, EFI, Replacement, Main Harness, Multi-port Fuel Injection, for HP, Dominator, Systems, Universal, Each

A$1,184.01
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Holley offers a variety of direct replacement EFI wiring harnesses, including multi-port, sequential, and throttle body injection styles. These units are made with premium components to ensure better reliability and performance for your ride--and they're compatible with many engine swaps. Holley EFI systems wiring harnesses are sold individually or as a kit; choose the model needed for your fuel injection application.

Part Type

Main Harness - Universal MPFI

Data: v4.2 - Upd: 2026-10-13 18:46:54

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
558-104
Product Attributes - Part Type
Fuel Injection System Wiring Harnesses
Product Attributes - Product Line
Holley EFI Systems Wiring Harnesses
Product Attributes - UPC
090127666746
Product Attributes - Fuel Injection Style
Multi-port
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
MPFI main harness for Holley HP and Dominator EFI systems. Fits all multi-point engines.

Reference Information

Brand Name/s Holley
StreetFX SKU hly558-104
SFX Item ID 4784129
Supplier Item Code 4784129
Manufacturer SKU 558-104
Manufacturer UPC 90127666746
Alternative References HOL558-104

Compatibility

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