Holley EFI Conversion Master Kit Terminator Hard Core Gray



  • Supports Up To 600HP
  • Includes 80Lb Fuel Injectors
  • Self Tunes While Driving
  • Includes Detailed Instructions
MSRP $3,447.00
You save 10%

Holley Hard Core Gray Terminator Electronic Fuel Injection Conversion Master Kit for Carbureted Engines.

Are you thinking about replacing your carburetor system and installing a new EFI System? If so, you might want to consider purchasing this Electronic Fuel Injection Master Kit from Holley (550-406K). This system replaces your carburetor with a more modern throttle body setup.

The Holley Terminator Electronic Fuel Injection System has a self-tuned unit that can learn while driving. This Holley Terminator system features a 950 CFM 4BBL throttle body that is compatible with naturally aspirated V8 engines from 250 horsepower up to 600 horsepower. The throttle body housing works on most 4150 style 4BBL mounting flanges. The housing is then powder coated in a Hard Core Gray finish.

Product Fitment:
- 1965-1985 Mustangs
- 1966-1977 Broncos
- 1960-1987 Chevy C10s

Master Kit Includes:
- Terminator Throttle Body Assembly
- Terminator ECU
- 3-1/2" Touch Screen Controller
- Main Terminator Wiring Harness
- Accessory Wires
- All Necessary Mounting Hardware and Brackets
- Billet Fuel Pressure Regulator
- Pre and Post Fuel Filters
- Electronic Fuel Pump
- All Necessary Fuel Line, Clamps and AN Fittings
- Detailed Instructions

- Easy Installation
- Fits Most Square Flanged Intakes
- Self Tunes While Driving
- Potted and Sealed ECU
- Easy to Use Controller
- 80 lbs. Fuel Injectors
- Easy Maintenance
- Hard Core Gray Finish

Please Note: This Holley Terminator Electronic Fuel Injection System fits all standard square flange intake manifolds. It has connections for Ford, GM TH350 and 700R4, and other transmission linkages. This kit includes a TBI unit, ECU, handheld programmer, wiring and all sensors.

The large 3-1/2" full color graphic display touch screen controller can easily change settings on your vehicle as well update the controller when newer software is available. The ECU is fully potted and sealed for added protection from vibration, dust, moisture and any other pieces of debris that may come into contact with the ECU's housing. This keeps the most important components in the system safe and secure. The Holley Terminator ECU can also be easily updated to Holley "HP" ECU specifications with a completely free online software download.

This system uses a 950 CFM Throttle Body with a CFD computer designed air-entry area. This design was taken from Holley's throttle bodies that are famously used in NASCAR. This throttle body is found on all NASCAR Sprint Cup Series cars. Give your vehicle a new piece of quality hardware by installing the same equipment that is used in professional level racing vehicles.

Order a Holley (550-406K) Hard Core Gray Terminator Electronic Fuel Injection Conversion Master Kit for your Carbureted Engine from CJ Pony Parts today!

California Residents: Proposition 65 Warning

Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:

  • 1965 and older U.S. manufactured California certified vehicles
  • 1967 and older U.S. manufactured federally certified vehicles

Installation Difficulty


Advanced skill is required for this installation.

Vehicle Fitment

This product will fit the following Bronco years:

This product will fit the following C10 years:

This product will fit the following Mustang years:

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