
Universal MPFI Main Harness for HP EFI and Dominator EFI
This universal multi-port main harness is the central wiring for Holley HP and Dominator EFI systems, arriving fully terminated with 10-pin ignition and injector connectors for single-plane and MPFI intake manifolds.
Holley 558-104 Highlights:
- Works with Holley HP and Dominator EFI systems.
- Fully terminated universal MPFI main harness.
- For single-plane and Holley MPFI intake manifolds.
- Supplies 10-pin ignition and injector connectors.
- Multi-port fuel injection wiring.
Take your EFI System to the next level with the Dominator ECU
Holley Dominator EFI Vehicle Management Systems are engine management systems that can regulate any engine combination, from street to high-end unlimited racing. This system will control almost any input, output, or power adder you can think of, as well as function as a standalone data acquisition/control module. So, stop driving with multiple controllers and upgrade to Dominator ECU, providing your ride with complete engine management in a single unit.
