Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Holley Dominator EFI Auxiliary Harnesses 558-403 Fuel Injection Systems Wiring Harnesses, EFI, J3 Harness, MPFI, Speed Density/Throttle, 17 Input/Outputs, Connector Included, Kit

Holley Dominator EFI Auxiliary Harnesses 558-403 Fuel Injection Systems Wiring Harnesses, EFI, J3 Harness, MPFI, Speed Density/Throttle, 17 Input/Outputs, Connector Included, Kit

A$448.15
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Holley has put together a choice of several Dominator EFI auxiliary harnesses. These kits include the loose wires, connectors, inputs, and outputs needed to configure and customize your Dominator EFI system to meet your performance needs.

Part Type

J3 Connector & Harness

Data: v4.2 - Upd: 2026-10-13 18:47:41

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
558-403
Product Attributes - Part Type
Fuel Injection System Wiring Harnesses
Product Attributes - Product Line
Holley Dominator EFI Auxiliary Harnesses
Product Attributes - UPC
090127666449
Product Attributes - Fuel Injection Style
Multi-port
Product Attributes - Metering Style
Speed density (Map-N) or speed throttle (Alpha-N)
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Includes J3 ECU connector and 17 user-programmable inputs and outputs.

Reference Information

Brand Name/s Holley
StreetFX SKU hly558-403
SFX Item ID 4783047
Supplier Item Code 4783047
Manufacturer SKU 558-403
Manufacturer UPC 90127666449
Alternative References HOL558-403

Compatibility

Application Data
  • Stock EFI SystemNo
    EFI System ManufacturerHolley
    UniversalNo

Loading compatibility information...