Description
This harness is for 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, 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.
Features:
- 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.
- For TFI distributor applications, use ignition adapter 558-305
Specs:
| Brand | Holley EFI |
|---|---|
| Emission Code | 4 |
| Grade Type | Performance |
| Harness Application | Ford |
| Harness Type | Main |
| Product Type | 5.0L Ford Main Harness |
| Warning | California Proposition 65 |
| Part Number | 558-128 |
Application:
- NOT INTENDED AS AN OEM REPLACEMENT!
- Fuel injected small block ford engines, such as 5.0L, or 5.8L Windsor
- Plug and play ignition capability with Dual Sync and HyperSpark Distributors
- Compatible with Holley EFI Dominator, HP, and Terminator X and X Max ECU’s
- For use with OEM Ford fuel injectors, use injector harness 558-209
- Ignition adapter 558-305 is required for applications with a TFI distributor
- The main harness supports all the primary engine sensors, fuel and ignition for eight cylinder engines, the #1 wideband oxygen sensor, and the first four programmable input and output channels. There are two connectors for this harness designated as “J1A” (pin designations below that start with an A) and “J1B” (pin designations below that start with a B).
