Holley EFI - 558-128

Holley EFI Ford Foxbody Main Harness

Holley EFI Engine Main Harness; For Use w/5.0 Small Block Ford Engines;

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 80s and early 90s engines. Compatible with Holley EFI Dominator, HP, and Terminator X and X Max ECUs.

• Designed for use with fuel injected small block ford engines
• 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
• Comes pre-terminated with Ford PWM IAC connector for OEM PWM - idle air control motors
• For OEM Ford fuel injectors, use injector harness 558-209
• For TFI distributor applications, use ignition adapter 558-305