Holley Terminator EFI HyperSpark Ignition Adapters 558-323 Wiring Harnesses, EFI, Adapter, Plug-and-Play, Main Harness to X System, Each
Holley Terminator EFI HyperSpark Ignition Adapters 558-323 Wiring Harnesses, EFI, Adapter, Plug-and-Play, Main Harness to X System, Each
Description
EFI Wiring Harness - Ignition Adapter Harness - HyperSpark Distributors to Holley EFI - Each
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:16:47
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 | hly558-323 |
| SFX Item ID | 4783865 |
| Accounting SKU | hly-558-323 |
| Manufacturer SKU | 558-323 |
| Manufacturer UPC | 090127073445 |
| Alternative References | 558-323, HLY-558-323, HOL558-323 |
Wiring Harnesses, Holley EFI, HyperSpark Ignition Adapter, Plug-and-Play, Holley Main Harness to Terminator X EFI System, Each
Holley Terminator EFI HyperSpark ignition adapters are designed to plug-and-play with HyperSpark distributors and Holley EFI main harnesses with an ignition connector. They enable you to run a "timed sequential" fuel strategy for faster responses and cleaner emissions. Complete the improvement of your driving experience with a Holley Terminator EFI HyperSpark ignition adapter.
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 558-323 |
| Part Type | Wiring Harnesses |
| Product Line | Holley Terminator EFI HyperSpark Ignition Adapters |
| UPC | 090127073445 |
| Fuse Block Included | No |
| Quantity | Sold individually. |
| Notes | Designed to plug-and-play HyperSpark distributors and Holley EFI main harnesses with ignition connector. |
| Special Attention | Used to run a "timed sequential" fuel strategy, with Holley EFI V5 Build 160 or Later, or Terminator X. |
Compatibility
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