EFI HARNESS KIT for Universal V8 MPFI
Our Holley EFI Harness Kit comes complete with the main harness, power harness and injector harness to support your primary system!
•Harness Kit Includes; Main Power Harness, Universal MPFI Main Harness, v-8 Injector Harness
•Works with HP or Dominator ECU's
NOTICE: You will need to purchase an ECU and O2 Sensor to make this a complete kit.
558-504 EFI HARNESS KIT for Universal V8 MPFI