Holley EFI 558-128 Engine Main Harness
Product details
| Management number | 254823619 | Release Date | 2026/11/07 | List Price | US$233.98 | Model Number | 254823619 | ||
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| Category | |||||||||
Compatible with 1986-2000 Ford® Fuel Injected 5.0L/5.8L Small Block Engines. This product is not created or sold by Ford®.;<br><br>This harness is for fuel injected small block engines, such as 5.0L, or 5.8L Windsor powerplants. Plug and play ignition capability with Dual Sync and HyperSpark Distributors, ignition adapter 558-305 is required for applications with a TFI distributor. The 5.0L Ford® main harness is pre-terminated with Ford® PWM IAC connector, for the OEM PWM - idle air control motor commonly found on late 80's and early 90's engines. Compatible with Holley EFI® Dominator®, HP®, and Terminator X® and X Max® ECU's.;
- Designed for use with fuel injected small block ford engines, such as 5.0L, or 5.8L Windsor powerplants.
- Plug and play ignition capability with Dual Sync and HyperSpark Distributors, for ignition adapter 558-305 is required for applications with a TFI distributor
- Compatible with Holley EFI Dominator, HP, and Terminator X and X Max ECU's
- Comes pre-terminated with Ford PWM IAC connector, for OEM PWM - idle air control motors
- For use with OEM Ford fuel injectors, use injector harness 558-209.
| Manufacturer part number | 558-128 |
|---|---|
| Automotive specialty part type | Engine Wiring Harness |
| Compatible cars | 1986-2000 Ford Fuel Injected 5.0L/5.8L Small Block Engines |
| Vehicle fitment type | Specific |
| Vehicle make | Ford |
| Vehicle model | 558-128 |
| Brand | Holley EFI |
| Vehicle year | 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 |
| Weight | 4.1 lb |
| Vehicle type | Car |
| Model | 558-128 |
| Count per pack | 1 |
| Has written warranty | No |
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