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Product Summary

Universal Fit, Ford 4V Mod Stock Coils Ignition Type

    Rebates Available

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    Key Specs

    MFG. Part #550-1219
    BrandHolley
    Ignition TypeFord 4V Mod Stock Coils
    Tuner StyleTouchscreen Handheld
    Throttle StyleCable Driven
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    Need To Know

    Quick and Easy Returns

    Return Policy

    Holley 550-1219 Details

    Introducing Terminator X and X Max Kits for the Modular Ford engine. These new kits will plug and play with either 2V or 4V Mod Motors commonly found in 1996-2004 Mustangs, 1995-2006 F150, or 2002-2005 Explorers. These kits will work with both 4.6 and 5.4L power plants, so no matter what your donor vehicle was, we have a standalone Terminator X EFI system for your combination.Terminator X features real-time fuel learn, high impedance injector drivers, integrated 1bar MAP sensor, and 4 programmable inputs and outputs. These are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more.Terminator X ECU comes fully loaded with base maps for common Coyote engine combinations to get you out of the garage and on the road/track fast. The included 3.5" LCD touch screen handheld contains an easy to use calibration wizard as well as tuning and gauge display functions.Included with Terminator X is Holley EFI's industry leading support, easy to use software suite that allows full laptop access/compatibility for advance users. Whether you're building a budget beater or full on race car, Terminator X has the industry leading features and technology you need at a price that won't break the bank.

    Features:

    • Plug and play engine control (for Ford Modular Engines, 4.6L 2V and 4V, or 5.4L 2V or 4V)
    • Plug and Play compatible with Holley EFI accessories - Analog gauges, shift lights, modules, and both 6.86" and 12.3" Pro Dash
    • EV1 or EV6 injector harness included (depending on your injector configuration)
    • High Impedance Injector drivers power Holley EFI and most stock injectors -Injector support chart found in instructions (will not support low impedance injectors)
    • Included Bosch LSU 4.9 wideband O2 sensors for accurate readings and precise tuning control
    • Built in 1bar MAP (manifold absolute pressure) sensor included - For Boosted applications - internal MAP sensor can be disabled and utilize external MAP sensor harness (kit includes a terminated connector for seamless installation)
    • Vacuum hose adapters included - (1/8", 1/4", and 3/16" sizes)
    • 4 inputs - 12v, Ground, 5v, and frequency for items like pressure sensors, activation triggers, nitrous activation, or trans brake
    • Boost Control - boost vs. time, boost vs. gear, boost vs. RPM, boost vs. speed, and boost safeties
    • Nitrous Control - channels for wet or dry, progressive or non-progressive, rich/lean safeties, and target closed loop AFR (Air/Fuel Ratio)
    • Advanced Tables - ( 4x 1D tables, 1x 1D gear table, 4x 2D table, and 1x 2D gear tables) for nearly unlimited table configuration options
    • On-board diagnostic LEDS - ECU power, engine run, TPS calibration, cam signal, and more! Identify critical engine parameters at a glance
    • 3.5" touchscreen handheld included - Internal data-logging, custom gauge display, and calibration wizard allow quick building bases tunes for any Domestic V8 engine
    • Compact ECU (Engine Control Unit) - At only 7.45" x 4.1" x 1.66" the compact packaging allows mounting virtually anywhere (XMAX ECU = 9.6" x 4.1" x 1.66"). REMINDER: diagnostic LED's must face up!
    • FREE EFI Tuning software - For compete control of your Terminator X power plant

    Charts

    Rebates

    Holley Fuel Up Spring Savings Event 2026

    Save 10% instantly on select products across the Holley family of performance brands during the annual Holley Fuel Up Spring Savings Event 2026. Instant rebate period has been extended and now runs from March 30, 2026 through April 19, 2026.

    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    Holley 550-1219 Specifications

    KEY SPECS
    MFG. Part #550-1219
    BrandHolley
    Ignition TypeFord 4V Mod Stock Coils
    Tuner StyleTouchscreen Handheld
    Throttle StyleCable Driven
    GENERAL
    Injector ConnectorUSCAR (EV6)
    MAP Sensor IncludedYes
    Transmission ControlNo
    Oxygen Sensor StyleBosch
    GTIN Code090127084908
    Sold in QuantityKit

    Fitment

    • Ford 4.6 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 5.4 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 5.4 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 2V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 2V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 5.4 2V

    • Ford 5.4 2V

    • Ford 5.4 4V

    • Ford 5.4 2V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 5.4 4V

    • Ford 5.4 4V

    • Ford 5.4 3V

    • Ford 4.6 2V

    • Ford 4.6 2V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 4V

    • Ford 4.6 2V

    • Ford 4.6 3V

    • Ford 4.6 2V

    • Ford 4.6 2V

    • Ford 4.6 2V

    • Ford 4.6 2V

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