Holley EFI Benchtop Harnesses 558-127 Wiring Harnesses, EFI, Harness, Test Harness, Input Connectors, Power Switch, for HP, Dominator, Terminator, Sniper ECUs, Each
Holley EFI Benchtop Harnesses 558-127 Wiring Harnesses, EFI, Harness, Test Harness, Input Connectors, Power Switch, for HP, Dominator, Terminator, Sniper ECUs, Each
Description
Wiring Harness - Bench Top Test - Holley EFI - Each
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:16:20
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 | hly558-127 |
| SFX Item ID | 4783448 |
| Accounting SKU | hly-558-127 |
| Manufacturer SKU | 558-127 |
| Manufacturer UPC | 090127136768 |
| Alternative References | 558-127, HLY-558-127, HOL558-127 |
Wiring Harnesses, Holley EFI, Benchtop Harness, Test Harness, EFI Input Connectors, Power Switch, for HP, Dominator, Terminator, Sniper ECUs, Each
Holley EFI benchtop harnesses are designed for benchtop testing and setup of HP, Dominator, Terminator X, Terminator X Max, and Sniper ECU's, as well as 7 in. dashes. They are great for ECU diagnostics that do not require a running engine, firmware updates, or 7 in. dash calibrations. The harness has pre-terminated connectors for the following sensor inputs: CAN, Crank, Cam, TPS, Input (1), P1A, Main Power, and Sniper EFI connectors for a Sniper main harness. Also includes a power switch for quick setup in your workspace. Power and ground flying leads need to be connected to your battery or power supply (not included).
Key features:
• Terminated connectors for multiple EFI inputs
• Included power switch allows for a quick "install" on your test bench
• Optimal for ECU diagnostic, firmware updating, and pre-configuring dash layouts
• Works with HP, Dominator, Terminator X, Terminator X Max, and Sniper ECU's, as well as 7 in. dashes
• Has pre-terminated connectors for these sensor inputs: CAN, Crank, Cam, TPS, Input (1), P1A, Main Power, and Sniper EFI main harness connectors
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 558-127 |
| Part Type | Fuel Injection System Wiring Harnesses |
| Product Line | Holley EFI Benchtop Harnesses |
| UPC | 090127136768 |
| Quantity | Sold individually. |
| Notes | Designed for benchtop testing and setup of HP, Dominator, Terminator X, Terminator X Max, Sniper ECU's and 7.000 in Holley Dashes. |
Compatibility
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