Holley EFI 550-444K Terminator Stealth EFI Master Kit Gold

Holley EFI

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Terminator™ EFI 4bbl Throttle Body Fuel Injection Stealth & Complete Fuel System

Have been hesitant on switching to EFI because you like the traditional look of a carburetor? There is no more need to worry! Holley has you covered with the new Terminator Stealth Throttle Body Fuel injection System. Now you can have all of the benefits of EFI and maintain the traditional looks of a carburetor. Holley's Terminator Stealth EFI systems have the same great self-tuning features of our Terminator EFI in a new stealthy package! - Easy to install - No computer experience required - Handheld tuner included - Simple multiple choice set-up wizard - Self-tunes while you drive - Upgradable to complete laptop control without buying another ECU - Carburetor replacement EFI from the fuel systems experts!


  • Carburetor looks with the drivability of EFI
  • Trouble-free performance with today’s fuels - put an end to vapor lock and fuel varnish problems!
  • Fits V8 engines from 250-600 horsepower
  • 4150 style 4BBL mounting flange - Bolts on in place of carburetor
  • Available in Polished, Classic Gold and Hard Core Gray™ finishes.
  • Fully self-tuning ECU - No laptop required
  • Includes full color, 3.5” touch screen LCD for both basic and advanced tuning options
  • Timing control option for GM Small Cap HEI and Ford TFI distributors
  • Connections for Ford, GM TH350, 700R4 and other transmission linkages
  • Optional free software upgrade for full laptop control
  • Easy plug and play harnesses with minimal connections
  • Virtually maintenance free - keeps your vehicle reliable and ready to drive
  • Master Kits include complete fuel system: fuel pump, filters, 40ft of hose (feed & return), billet regulator and all fittings including fuel tank return line bulkhead fitting
Brand Holley EFI
CFM 950
Emission Code 3
Finish Classic Gold
Flange Size 4150
Fuel Pressure 43 Psi
Height 3.25"
Injector Size 80Lb/Hr @ 43PSI
Product Type Terminator Stealth Kit
Throttle Bore 1.750 inch
UPC 090127000458
Part Number 550-444K

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