This main engine harness is intended for use with Dominator, HP, Terminator X, and Terminator X Max ECUs when running a Terminator or Terminator Stealth throttle body injection unit on a Gen 3 24x LS engine.
Specifications:
- Application: Gen 3 24x LS engines
- Compatible ECUs: Dominator, HP, Terminator X, Terminator X Max
- Crank and cam sensor plugs for Gen 3 24x LS engines
- Even/Odd LS coil harness plugs
- Bulkhead connector for Holley 534-225 and 534-227 (and similar) throttle body injection units
- Product Type: Terminator LS Main Engine Harness
- Part Number: 558-111
Only compatible with Terminator TBI throttle bodies — not for Multi-Port Fuel Injection (MPFI) applications.
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 LS engines is this harness designed for?
It's built for Gen 3 24x LS engines when paired with a Terminator or Terminator Stealth throttle body injection unit.
Does this harness work with MPFI setups?
No, it's only compatible with Terminator TBI throttle bodies, not Multi-Port Fuel Injection.
Which Holley EFI ECUs does this harness work with?
It's designed for Dominator, HP, Terminator X, and Terminator X Max ECUs.
Is this harness legal for street use?
No. This part is for Racing Use Only Vehicles and is not legal to install on an emissions-controlled street vehicle.
What part number is this harness?
This main engine harness for 24x LS with TBI is Holley part number 558-111.
