This coil harness is built for 1999-2004 2-valve Ford Modular 4.6L and 5.4L engines running HP EFI or Dominator EFI.
Specifications:
- Application: 1999-2004 Ford Modular 4.6L & 5.4L (2-valve)
- Compatible With: HP EFI, Dominator EFI
- Harness Type: Ignition coil harness
- Part Number: 558-314
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What engines does the 558-314 harness fit?
1999-2004 2-valve Ford Modular 4.6L and 5.4L engines.
What Holley EFI systems is it compatible with?
HP EFI and Dominator EFI.
Can this be installed on a street-driven vehicle?
No — it's legal for Racing Use Only vehicles that are not registered or operated on the street.

