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  • Original price $1,399.95 - Original price $1,399.95
    Original price $1,399.95
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    Current price $1,449.95

    Holley HLY550-909T Terminator X MPFI Kit GM LS1 w/EV6 Inj Harness

    Holley

    Description: The Holley Terminator X MPFI Kit is designed for GM LS1 and LS6 engines, providing a comprehensive engine control solution. This kit i...

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    Original price $1,399.95 - Original price $1,399.95
    Original price $1,399.95
    $1,449.95
    $1,449.95 - $1,449.95
    Current price $1,449.95
  • Original price $1,499.95 - Original price $1,499.95
    Original price $1,499.95
    $1,599.95
    $1,599.95 - $1,599.95
    Current price $1,599.95

    Holley HLY550-909 Terminator -X MPFI Kit GM LS1 w/EV6 Inj Harness

    Holley

    Description: The Holley Terminator X MPFI Kit is designed for GM LS1 engines and includes an engine control module, a 3.5-inch touchscreen, and a w...

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    Original price $1,499.95 - Original price $1,499.95
    Original price $1,499.95
    $1,599.95
    $1,599.95 - $1,599.95
    Current price $1,599.95
  • Original price $1,399.95 - Original price $1,399.95
    Original price $1,399.95
    $1,449.95
    $1,449.95 - $1,449.95
    Current price $1,449.95

    Holley HLY550-905T Terminator X MPFI Kit GM LS2/LS3 Late Truck

    Holley

    Description: This kit includes an Engine Control Module and a wiring harness specifically tailored for the 58x reluctor wheel configuration found i...

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    Original price $1,399.95 - Original price $1,399.95
    Original price $1,399.95
    $1,449.95
    $1,449.95 - $1,449.95
    Current price $1,449.95
  • Original price $1,499.95 - Original price $1,499.95
    Original price $1,499.95
    $1,599.95
    $1,599.95 - $1,599.95
    Current price $1,599.95

    Holley HLY550-905 Terminator -X MPFI Kit GM LS2/LS3 Truck

    Holley

    Description: This comprehensive kit includes an Engine Control Module (ECM) with a user-friendly 3.5-inch touchscreen interface, allowing for easy ...

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    Original price $1,499.95 - Original price $1,499.95
    Original price $1,499.95
    $1,599.95
    $1,599.95 - $1,599.95
    Current price $1,599.95
  • Original price $1,399.95 - Original price $1,399.95
    Original price $1,399.95
    $1,449.95
    $1,449.95 - $1,449.95
    Current price $1,449.95

    Holley HLY550-904T Terminator X MPFI Kit GM LS Early Truck

    Holley

    Description: This kit includes an Engine Control Module and a wiring harness, making it a comprehensive solution for those looking to integrate LS ...

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    Original price $1,399.95 - Original price $1,399.95
    Original price $1,399.95
    $1,449.95
    $1,449.95 - $1,449.95
    Current price $1,449.95
  • Original price $1,499.95 - Original price $1,499.95
    Original price $1,499.95
    $1,599.95
    $1,599.95 - $1,599.95
    Current price $1,599.95

    Holley HLY550-904 Terminator X MPFI Kit Early LS Truck

    Holley

    Description: This comprehensive kit includes an Engine Control Module (ECM) that features a user-friendly 3.5-inch touchscreen interface, allowing ...

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    Original price $1,499.95 - Original price $1,499.95
    Original price $1,499.95
    $1,599.95
    $1,599.95 - $1,599.95
    Current price $1,599.95
  • Original price $1,399.95 - Original price $1,399.95
    Original price $1,399.95
    $1,449.95
    $1,449.95 - $1,449.95
    Current price $1,449.95

    Holley HLY550-903T Terminator X MPFI GM LS1/LS6

    Holley

    Description: The Holley HLY550-903T Terminator X is an advanced engine control module designed specifically for GM LS1 and LS6 engines. This produc...

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    Original price $1,399.95 - Original price $1,399.95
    Original price $1,399.95
    $1,449.95
    $1,449.95 - $1,449.95
    Current price $1,449.95
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  • Original price $1,499.95 - Original price $1,499.95
    Original price $1,499.95
    $1,599.95
    $1,599.95 - $1,599.95
    Current price $1,599.95

    Holley HLY550-903 Engine Management System Terminator X

    Holley

    Description: The Holley HLY550-903 Engine Management System, known as the Terminator X, is designed for those looking to manage their engine perfor...

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    Original price $1,499.95 - Original price $1,499.95
    Original price $1,499.95
    $1,599.95
    $1,599.95 - $1,599.95
    Current price $1,599.95
  • Original price $3,499.95 - Original price $3,499.95
    Original price $3,499.95
    $3,699.95
    $3,699.95 - $3,699.95
    Current price $3,699.95

    Holley HLY550-660 Dominator EFI Kit - LS2 w/Trans Contr & DBW

    Holley

    Description: This kit includes an Engine Control Module, a wiring harness, a transmission harness, and a drive-by-wire system, all tailored for GM ...

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    Original price $3,499.95 - Original price $3,499.95
    Original price $3,499.95
    $3,699.95
    $3,699.95 - $3,699.95
    Current price $3,699.95
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  • Original price $3,349.95 - Original price $3,349.95
    Original price $3,349.95
    $3,499.95
    $3,499.95 - $3,499.95
    Current price $3,499.95

    Holley HLY550-655 Dominator EFI Kit - Ford w/COP

    Holley

    Description: This kit features an Engine Control Module, a wiring harness, and a Coil On Plug harness, providing a comprehensive solution for those...

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    Original price $3,349.95 - Original price $3,349.95
    Original price $3,349.95
    $3,499.95
    $3,499.95 - $3,499.95
    Current price $3,499.95
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  • Original price $3,149.95 - Original price $3,149.95
    Original price $3,149.95
    $3,299.95
    $3,299.95 - $3,299.95
    Current price $3,299.95

    Holley HLY550-652 Dominator EFI Kit - Universal

    Holley

    Description: The Holley HLY550-652 Dominator EFI Kit is designed for those looking to enhance their engine management system. This universal kit in...

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    Original price $3,149.95 - Original price $3,149.95
    Original price $3,149.95
    $3,299.95
    $3,299.95 - $3,299.95
    Current price $3,299.95
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  • Original price $3,149.95 - Original price $3,149.95
    Original price $3,149.95
    $3,299.95
    $3,299.95 - $3,299.95
    Current price $3,299.95

    Holley HLY550-651 Dominator EFI Kit - LS2/LS3 Late Truck

    Holley

    Description: This comprehensive kit includes an Engine Control Module and a wiring harness specifically tailored for GM LS-Series engines. It provi...

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    Original price $3,149.95 - Original price $3,149.95
    Original price $3,149.95
    $3,299.95
    $3,299.95 - $3,299.95
    Current price $3,299.95
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