Holley EFI 558-127 Benchtop Testing Harness
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Limited Time SaleUS$149.97 cheaper than the new price!!
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Product details
| Management number | 254308971 | Release Date | 2026/11/07 | List Price | US$99.98 | Model Number | 254308971 | ||
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| Category | |||||||||
Benchtop Test Harness for Firmware Updating, Dash Configuration, and ECU Testing;<br><br>Designed for benchtop testing and setup of HP, Dominator, Terminator X, Terminator X Max, and Sniper ECU's, as well as 7" dashes. Great for ECU diagnostics, firmware updating, or pre-configuring dash layouts without being in the vehicle. 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);
- Terminated connectors for several EFI inputs
- Included power switch allows for a quick “install” on your test bench
- Great for ECU diagnostics that do not require a running engine, firmware updates, or 7” dash calibrations
- Works with HP, Dominator, Terminator X, Terminator X Max, and Sniper ECU's, as well as 7" dashes
- Has pre-terminated connectors for these sensor inputs: CAN, Crank, Cam, TPS, Input #1, P1A, Main Power, & Sniper EFI main harness connectors
| Manufacturer part number | 558-127 |
|---|---|
| Automotive electrical part & accessory type | Connectors |
| Compatibility | HP, Dominator, Terminator X, Terminator X Max, and Sniper ECU's, as well as 7" dashes |
| Vehicle fitment type | Specific |
| Brand | Holley EFI |
| Vehicle model | Holley |
| Assembled product weight | 0.92 lb |
| Rec. use | Automotive |
| Items included | CAN, Crank, Cam, TPS, Input #1, P1A, Main Power, & Sniper EFI main harness connectors |
| Accessories | power switch |
| Count per pack | 1 |
| Vehicle type | Car |
| Has written warranty | No |
| Model | Holley |
| Automotive parts division | Direct Replacement |
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Automotive Electrical
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