Mercury Monarch Engine Control Modules

Get an exact fit for your

Mercury Monarch

Year

Choose Year

Year

Make

Mercury

Make

Model

Monarch

Model

Select Ignition Type

All

125

Factory GM

Ford Coyote

Universal

Ford 4V Mod Stock Coils

Gen III Hemi Coil-on-Plug

Ford 2V Mod Stock Coils

Ford TFI

Holley Smart Coils

125 products

Sort By:

Clear All

Fitment

Mercury Monarch

Products

Rebate

Holley |

#425550927

Holley 550-927 Terminator X Max Early Truck Engine MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

Multec 2

Tuner Style:

Touchscreen Handheld

$1,868.95

/each

$2,199.95

Rebate

Holley |

#425550929

Holley 550-929 Terminator X Max LS1/LS6 MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,698.95

/each

$1,999.95

$301 Off

Holley |

#425550933

Holley 550-933 Terminator X Max 58X/4X EV1 LS MPFI Kit, DBW

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,698.95

/kit

$1,999.95

Rebate

Holley |

#425550936

Holley 550-936 Terminator X Universal MPFI Kit

Ignition Type:

Universal

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,358.95

/kit

$1,599.95

Rebate

Holley |

#425550942

Holley 550-942 Terminator X Max Universal MPFI Kit

Ignition Type:

Universal

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,698.95

/kit

$1,999.95

Replacing Sway Bars in a Mercury Comet

How to replace sway bars in a Mercury Comet and the advantages that come with it.

Tubular Control Arms on an S-10

In this Tech Tip, John responds to a customer question about tubular control arms.

Control Arm Upgrade

Save some weight by swapping in some upgraded control arms! Employee Steve L. reviews the 1970-81 Camaro Upper Control Arm.

Car Cooling System Components

How does a cooling system work? Why is your engine overheating? What parts should you be giving your attention to? This guide answers all your questions.

Engine Cylinder Numbers

Approved Upgrades for the GM Crate 602/604

Tips and tricks to pull the most from your GM 602/604 platform.

How To Set Up Multiple Carburetors on a Vintage Engine

There's a right and wrong way to run a two-barrel carburetor on your vintage engine. Check out this guide about how to select the correct carburetor for your Flathead or vintage engine.

Leak Down Check on a Micro Sprint Engine

It is most certainly an important procedure and should be part of a weekly maintenance routine.

How to Install Fuel Pressure Regulators for Carburetors

Learn how to install a bypass and deadhead style fuel pressure regulator. We cover how these regulators work with a carburetor and advantages of each style.

Murray Comet Pedal Car Assembly

Learn about 'Speedy' Bill's passion for pedal cars and how that has been passed down through generations in the Smith family. Jess also explains the step by step process to assemble Speedway's Murray Comet style pedal car.

Rebate

Holley |

#425550950

Holley 550-950 Terminator X Max Universal MPFI Kit

Ignition Type:

Universal

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,698.95

/kit

$1,999.95

Rebate

Holley |

#425550959

Holley 550-959 Terminator X Max Universal MPFI Kit

Ignition Type:

Universal

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,868.95

/kit

$2,199.95

Rebate

Holley |

#4255501213

Holley 550-1213 Terminator X, 2013-2015 Ford Coyote Ti-VCT, EV6

Ignition Type:

Ford Coyote

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,676.95

/kit

$3,149.95

Rebate

Holley |

#4255501215

Holley 550-1215 Terminator X, 2015.5-17 Ford Coyote Ti-VCT, EV6

Ignition Type:

Ford Coyote

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,676.95

/kit

$3,149.95

Rebate

Holley |

#4255501218

Holley 550-1218 Terminator X, Ford Modular 4V, EV1 Injectors

Ignition Type:

Ford 4V Mod Stock Coils

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,741.95

/kit

$2,049.95

Rebate

Holley |

#4255501219

Holley 550-1219 Terminator X, Ford Modular 4V, EV6 Injectors

Ignition Type:

Ford 4V Mod Stock Coils

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$1,741.95

/kit

$2,049.95

Rebate

Holley |

#4255501220

Holley 550-1220 Terminator X, Ford Mod 2V or 4V, Smart Coils, EV1

Ignition Type:

Holley Smart Coils

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$1,741.95

/kit

$2,049.95

Rebate

Holley |

#4255501221

Holley 550-1221 Terminator X, Ford Mod 2V or 4V, Smart Coils, EV6

Ignition Type:

Holley Smart Coils

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$1,741.95

/kit

$2,049.95

Rebate

Holley |

#4255501225

Holley 550-1225 Terminator X, 2007-13 Gen III Hemi, EV6 Injectors

Ignition Type:

Gen III Hemi Coil-on-Plug

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$1,741.95

/kit

$2,049.95

Rebate

Holley |

#4255501312

Holley 550-1312 Terminator X Max, 13-15 Coyote Ti-VCT, EV1, 4R70W

Ignition Type:

Ford Coyote

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$2,973.95

/kit

$3,499.95

Rebate

Holley |

#4255501315

Holley 550-1315 Terminator X Max, 15.5-17 Coyote Ti-VCT EV6 4R70W

Ignition Type:

Ford Coyote

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,973.95

/kit

$3,499.95

Rebate

Holley |

#4255501316

Holley 550-1316 Terminator X Max, Ford Modular 2V, EV1 Injectors

Ignition Type:

Ford 2V Mod Stock Coils

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

Touchscreen Handheld

$2,038.95

/kit

$2,399.95

Rebate

Holley |

#4255501319

Holley 550-1319 Terminator X Max, Ford Modular 4V, EV6 Injectors

Ignition Type:

Ford 4V Mod Stock Coils

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,038.95

/kit

$2,399.95

Rebate

Holley |

#4255501411

Holley 550-1411 Terminator X Max, 13-15 Coyote Ti-VCT, EV6, DBW

Ignition Type:

Ford Coyote

Injector Connector:

USCAR (EV6)

Tuner Style:

Touchscreen Handheld

$2,973.95

/kit

$3,499.95

$496 Off

Holley |

#4255501620LSD

Holley 550-1620LSD Terminator X Max GM Early LT, Drive-by-Wire

Ignition Type:

Factory GM

Tuner Style:

Touchscreen Handheld

Throttle Style:

Drive-By-Wire

$2,803.95

/kit

$3,299.95

$533 Off

Holley |

#4255501630LSD

Holley 550-1630LSD Terminator X Max Early LT, Trans Control DBW

Ignition Type:

Factory GM

Tuner Style:

Touchscreen Handheld

Throttle Style:

Drive-By-Wire

$3,016.95

/kit

$3,549.95

$533 Off

Holley |

#4255501631LSD

Holley 550-1631LSD Terminator X Max Late LT, Trans Control DBW

Ignition Type:

Factory GM

Tuner Style:

Touchscreen Handheld

Throttle Style:

Drive-By-Wire

$3,016.95

/kit

$3,549.95

$242 Off

Holley |

#425550603N

Holley 550-603N HP EFI ECU & Harness Kit, LS2/LS3/LS7, NTK O2

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

USB/CAN Tuning Cable

$3,099.95

/each

$3,341.95

$229 Off

Holley |

#425550605N

Holley EFI 550-605N HP EFI ECU And Harness Kits

Ignition Type:

Universal

GTIN Code:

090127687482

Sold in Quantity:

Kit

$2,999.95

/each

$3,228.95

$229 Off

Holley |

#425550606N

Holley 550-606N HP EFI ECU & Harness Kit, Ford V8 MPFI, NTK O2

Ignition Type:

Ford TFI

Injector Connector:

Jetronic / Minitimer (EV1)

Sold in Quantity:

Kit

$2,999.95

/each

$3,228.95

$242 Off

Holley |

#425550607N

Holley 550-607N HP EFI ECU & Harness Kit, LS2/LS3/LS7, NTK O2

Ignition Type:

Factory GM

Injector Connector:

Jetronic / Minitimer (EV1)

Tuner Style:

USB/CAN Tuning Cable

$3,099.95

/each

$3,341.95

Rebate

Holley |

#425550904T

Holley 550-904T Terminator X Early Truck Engine MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

Multec 2

Tuner Style:

USB/CAN Tuning Cable

$1,231.95

/each

$1,449.95

$293 Off

Holley |

#425550919T

Holley 550-919T Terminator X Max 24X/1X EV6 LS MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

USB/CAN Tuning Cable

$1,656.95

/kit

$1,949.95

Rebate

Holley |

#425550927T

Holley 550-927T Terminator X Max Early Truck Engine MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

Multec 2

Tuner Style:

USB/CAN Tuning Cable

$1,826.95

/each

$2,149.95

Rebate

Holley |

#425550928T

Holley 550-928T Terminator X Max LS2/LS3 MPFI Kit

Ignition Type:

Factory GM

Injector Connector:

USCAR (EV6)

Tuner Style:

USB/CAN Tuning Cable

$1,826.95

/each

$2,149.95

FiTech |

#521300021

FiTech 30002-1 Replacement ECU for Fitech 30002 Handheld Go EFI 4

GTIN Code:

812061031189

$271.00

/each

FiTech |

#521300051

FiTech 30005-1 Replacement ECU for Fitech 30005 Easy Street EFI

GTIN Code:

812061031219

$271.00

/each

FiTech |

#521300081

FiTech 30008-1 Replacement ECU for Fitech 30008 Mean Street

GTIN Code:

812061031226

$271.00

/each

FiTech |

#521300141

FiTech 30014-1 Replacement ECU for Fitech 30014 Go Port

GTIN Code:

812061031240

$271.00

/each

FiTech |

#521300121

FiTech 30012-1 Replacement ECU for Fitech 30012 Go EFI 8

GTIN Code:

812061031233

$271.00

/each

FiTech |

#521238301

FiTech 62013-38301 New Style Handheld For FiTech 38301 Ultra Ram

GTIN Code:

812061032919

$167.00

/each

Showing 1 - 108 of 125 results

Shop Feedback:

Did you find what you are looking for?

Mercury Monarch Engine Control Modules

Ignition Type

Brand

Transmission Family

Availability

Discounts

Engine Family

Price

Customer Rating

Products

Holley 550-927 Terminator X Max Early Truck Engine MPFI Kit

Holley 550-929 Terminator X Max LS1/LS6 MPFI Kit

Holley 550-933 Terminator X Max 58X/4X EV1 LS MPFI Kit, DBW

Holley 550-936 Terminator X Universal MPFI Kit

Holley 550-942 Terminator X Max Universal MPFI Kit

Related Articles

Holley 550-950 Terminator X Max Universal MPFI Kit

Holley 550-959 Terminator X Max Universal MPFI Kit

Holley 550-1213 Terminator X, 2013-2015 Ford Coyote Ti-VCT, EV6

Holley 550-1215 Terminator X, 2015.5-17 Ford Coyote Ti-VCT, EV6

Holley 550-1218 Terminator X, Ford Modular 4V, EV1 Injectors

Holley 550-1219 Terminator X, Ford Modular 4V, EV6 Injectors

Holley 550-1220 Terminator X, Ford Mod 2V or 4V, Smart Coils, EV1

Holley 550-1221 Terminator X, Ford Mod 2V or 4V, Smart Coils, EV6

Holley 550-1225 Terminator X, 2007-13 Gen III Hemi, EV6 Injectors

Holley 550-1312 Terminator X Max, 13-15 Coyote Ti-VCT, EV1, 4R70W

Holley 550-1315 Terminator X Max, 15.5-17 Coyote Ti-VCT EV6 4R70W

Holley 550-1316 Terminator X Max, Ford Modular 2V, EV1 Injectors

Holley 550-1319 Terminator X Max, Ford Modular 4V, EV6 Injectors

Holley 550-1411 Terminator X Max, 13-15 Coyote Ti-VCT, EV6, DBW

Holley 550-1620LSD Terminator X Max GM Early LT, Drive-by-Wire

Holley 550-1630LSD Terminator X Max Early LT, Trans Control DBW

Holley 550-1631LSD Terminator X Max Late LT, Trans Control DBW

Holley 550-603N HP EFI ECU & Harness Kit, LS2/LS3/LS7, NTK O2

Holley EFI 550-605N HP EFI ECU And Harness Kits

Holley 550-606N HP EFI ECU & Harness Kit, Ford V8 MPFI, NTK O2

Holley 550-607N HP EFI ECU & Harness Kit, LS2/LS3/LS7, NTK O2

Holley 550-904T Terminator X Early Truck Engine MPFI Kit

Holley 550-919T Terminator X Max 24X/1X EV6 LS MPFI Kit

Holley 550-927T Terminator X Max Early Truck Engine MPFI Kit

Holley 550-928T Terminator X Max LS2/LS3 MPFI Kit

FiTech 30002-1 Replacement ECU for Fitech 30002 Handheld Go EFI 4

FiTech 30005-1 Replacement ECU for Fitech 30005 Easy Street EFI

FiTech 30008-1 Replacement ECU for Fitech 30008 Mean Street

FiTech 30014-1 Replacement ECU for Fitech 30014 Go Port

FiTech 30012-1 Replacement ECU for Fitech 30012 Go EFI 8

FiTech 62013-38301 New Style Handheld For FiTech 38301 Ultra Ram

Popular Parts