Holley EFI Systems Wiring Harnesses 558-203 Fuel Injection System Harnesses, EFI, 6 Cylinder, MPFI, SFI, TBI, Injector Harness, for HP, Dominator Systems, Universal, Each
Holley EFI Systems Wiring Harnesses 558-203 Fuel Injection System Harnesses, EFI, 6 Cylinder, MPFI, SFI, TBI, Injector Harness, for HP, Dominator Systems, Universal, Each
A$489.63
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:17:15
Features
Vehicle Compatibility and Return Conditions.
This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.
Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.
Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Holley, Hilborn, Holley Efi, Retrobright, Terminator X |
| StreetFX SKU | hly558-203 |
| SFX Item ID | 4784282 |
| Accounting SKU | hly-558-203 |
| Manufacturer SKU | 558-203 |
| Manufacturer UPC | 090127666470 |
| Alternative References | 558-203, HLY-558-203, HOL558-203 |
Fuel Injection System Wiring Harnesses, Holley EFI, 6 Cylinder, MPFI, SFI, TBI, Injector Harness, for HP, Dominator EFI Systems, Universal, Each
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.
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 558-203 |
| Part Type | Fuel Injection System Wiring Harnesses |
| Product Line | Holley EFI Systems Wiring Harnesses |
| UPC | 090127666470 |
| Fuel Injection Style | Multi-port |
| Metering Style | Speed density |
| Quantity | Sold individually. |
| Notes | Universal 6-cylinder injector harness designed for use with the HP EFI and Dominator EFI systems. |
Compatibility
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