Complete Holley Fuel Injection Kits and Harnesses

Complete Holley Fuel Injection Kits and Harnesses

Fuel Injection Kits for every budget from the leader in performance - Holley. These Plug n Play Systems are easy to install and program, allowing you to accurately control fuel and ignition. Whether you're looking to upgrade your current stock engine, an LS or even looking to upgrade a turbocharged, nitrous-fed engine, Eastwood has a kit from Holley for you.

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33 Item(s)

  • MSD Atomic EFI Master Kit 2900

    MSD Atomic EFI Master Kit 2900

    MSD Atomic EFI Master Kit 2900
    $1,388.95
    MSD Atomic EFI Master Kit 2900
    $1,388.95
  • Holley HP EFI Universal MPI Retrofit Kits 550-500

    Holley HP EFI Universal MPI Retrofit Kits 550-500

    HP EFI Universal MPI Retrofit Kit, 4150™ carburetor style intake manifolds
    $2,816.95
    HP EFI Universal MPI Retrofit Kit, 4150™ carburetor style intake manifolds
    $2,816.95
  • Holley Terminator LS MPFI Kit - GM 97-07 4.8/5.3/6.0L Truck Engines 550-623

    Holley Terminator LS MPFI Kit - GM 97-07 4.8/5.3/6.0L Truck Engines 550-623

    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor - with DRIVE-BY-WIRE & TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,419.95
    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor - with DRIVE-BY-WIRE & TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,419.95
  • 71-86 Jeep CJ Holley Sniper EFI BBD Master Kit 550-858K

    71-86 Jeep CJ Holley Sniper EFI BBD Master Kit 550-858K

    1971-1986 Jeep CJ's with 258ci 6 Cylinder Engines
    $1,247.95
    1971-1986 Jeep CJ's with 258ci 6 Cylinder Engines
    $1,247.95
  • Holley HP EFI 4bbl Multi Port Fuel Injection System 550-810

    Holley HP EFI 4bbl Multi Port Fuel Injection System 550-810

    HP EFI Multi-Port Fuel Injection System V8 4 bbl, Single Plane Small Block Chevy, Early to Late Heads
    $3,440.95
    HP EFI Multi-Port Fuel Injection System V8 4 bbl, Single Plane Small Block Chevy, Early to Late Heads
    $3,440.95
  • Holley HP EFI ECU & Harness Kits - Universal - Includes Bosch Oxygen Sensor 550-605

    Holley HP EFI ECU & Harness Kits - Universal - Includes Bosch Oxygen Sensor 550-605

    Unterminated Universal Harness, Includes Bosch Oxygen Sensor
    $1,998.95
    Unterminated Universal Harness, Includes Bosch Oxygen Sensor
    $1,998.95
  • Holley GM LS 24X EFI Harness Kit 558-500

    Holley GM LS 24X EFI Harness Kit 558-500

    GM LS1/6, 24X Crank Sensor, Bosch Injector
    $613.95
    GM LS1/6, 24X Crank Sensor, Bosch Injector
    $613.95
  • Holley Terminator LS MPFI Kit - GM 97-07 4.8/5.3/6.0L Truck Engines 550-614

    Holley Terminator LS MPFI Kit - GM 97-07 4.8/5.3/6.0L Truck Engines 550-614

    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    $2,157.95
    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    $2,157.95
  • Holley HP EFI ECU & Harness Kits - 99-04 Ford 4 Valve Modular Engine - Includes NTK Oxygen Sensor 550-617N

    Holley HP EFI ECU & Harness Kits - 99-04 Ford 4 Valve Modular Engine - Includes NTK Oxygen Sensor 550-617N

    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Includes NTK Oxygen Sensor
    $2,331.95
    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Includes NTK Oxygen Sensor
    $2,331.95
  • Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes NTK Oxygen Sensor 550-603N

    Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes NTK Oxygen Sensor 550-603N

    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes NTK Oxygen Sensor
    $2,242.95
    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes NTK Oxygen Sensor
    $2,242.95
  • Holley HP EFI ECU & Harness Kits - GM TPI and Holley Stealth Ram™ - Includes Bosch Oxygen Sensor 550-601

    Holley HP EFI ECU & Harness Kits - GM TPI and Holley Stealth Ram™ - Includes Bosch Oxygen Sensor 550-601

    GM TPI and Holley Stealth Ram™, Includes Bosch Oxygen Sensor
    $1,998.95
    GM TPI and Holley Stealth Ram™, Includes Bosch Oxygen Sensor
    $1,998.95
  • Holley EFI Fuel System Kit 526-5

    Holley EFI Fuel System Kit 526-5

    Fuel system consisting of; 20ft of 3/8” Vapor Guard™ Fuel Hose, 12-920 Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!
    $312.95
    Fuel system consisting of; 20ft of 3/8” Vapor Guard™ Fuel Hose, 12-920 Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!
    $312.95
  • Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes NTK Oxygen Sensor 550-607N

    Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes NTK Oxygen Sensor 550-607N

    GM LS2/3/7 (58x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes NTK Oxygen Sensor
    $2,242.95
    GM LS2/3/7 (58x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes NTK Oxygen Sensor
    $2,242.95
  • Holley HP EFI ECU & Harness Kits - 99-04 4 Valve Ford Modular Engine 550-616

    Holley HP EFI ECU & Harness Kits - 99-04 4 Valve Ford Modular Engine 550-616

    Complete 99-04 2 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    $2,157.95
    Complete 99-04 2 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    $2,157.95
  • Holley Terminator LS MPFI Kit 550-610

    Holley Terminator LS MPFI Kit 550-610

    GM LS2/LS3 Engines and 2007 to current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    $2,157.95
    GM LS2/LS3 Engines and 2007 to current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    $2,157.95
  • Holley HP EFI ECU & Harness Kits - 99-04 4 Valve Ford Modular Engine 550-617

    Holley HP EFI ECU & Harness Kits - 99-04 4 Valve Ford Modular Engine 550-617

    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    $2,157.95
    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    $2,157.95
  • Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes Bosch Oxygen Sensor 550-607

    Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes Bosch Oxygen Sensor 550-607

    GM LS2/3/7 (58x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor
    $2,065.95
    GM LS2/3/7 (58x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor
    $2,065.95
  • Holley HP EFI ECU & Harness Kits - Universal - Includes NTK Oxygen Sensor 550-605N

    Holley HP EFI ECU & Harness Kits - Universal - Includes NTK Oxygen Sensor 550-605N

    Unterminated Universal Harness, Includes NTK Oxygen Sensor
    $2,167.95
    Unterminated Universal Harness, Includes NTK Oxygen Sensor
    $2,167.95
  • Holley Universal V8 MPFI EFI Harness Kit 558-504

    Holley Universal V8 MPFI EFI Harness Kit 558-504

    Universal V8 MPFI
    $541.95
    Universal V8 MPFI
    $541.95
  • Holley HP EFI ECU & Harness Kits - Universal Ford V8 MPFI - Includes Bosch Oxygen Sensor 550-606

    Holley HP EFI ECU & Harness Kits - Universal Ford V8 MPFI - Includes Bosch Oxygen Sensor 550-606

    Universal FORD V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor, and Ford V8 Injector Harness.
    $1,949.95
    Universal FORD V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor, and Ford V8 Injector Harness.
    $1,949.95
  •  Holley Terminator LS MPFI Kit 550-609

    Holley Terminator LS MPFI Kit 550-609

    GM LS1/LS6 Engines with 24x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,174.95
    GM LS1/LS6 Engines with 24x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,174.95
  • Holley HP EFI ECU & Harness Kits - Universal MPFI V8 - Includes Bosch Oxygen Sensor 550-604

    Holley HP EFI ECU & Harness Kits - Universal MPFI V8 - Includes Bosch Oxygen Sensor 550-604

    Universal V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor
    $1,998.95
    Universal V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor
    $1,998.95
  • Holley HP EFI ECU & Harness Kits - GM LS1/6 - Includes Bosch Oxygen Sensor 550-602

    Holley HP EFI ECU & Harness Kits - GM LS1/6 - Includes Bosch Oxygen Sensor 550-602

    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor
    $2,065.95
    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor
    $2,065.95
  • Holley HP EFI ECU & Harness Kits - Universal Ford MPFI V8 - Includes NTK Oxygen Sensor 550-606N

    Holley HP EFI ECU & Harness Kits - Universal Ford MPFI V8 - Includes NTK Oxygen Sensor 550-606N

    Universal FORD V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor, and Ford V8 Injector Harness.
    $2,127.95
    Universal FORD V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor, and Ford V8 Injector Harness.
    $2,127.95
  • Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes Bosch Oxygen Sensor 550-603

    Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes Bosch Oxygen Sensor 550-603

    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes Bosch Oxygen Sensor
    $2,065.95
    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes Bosch Oxygen Sensor
    $2,065.95
  • Holley Terminator LS MPFI Kit 550-622

    Holley Terminator LS MPFI Kit 550-622

    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,174.95
    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,174.95
  • Holley HP EFI ECU & Harness Kits - GM LS1/6 - Includes NTK Oxygen Sensor 550-602N

    Holley HP EFI ECU & Harness Kits - GM LS1/6 - Includes NTK Oxygen Sensor 550-602N

    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes NTK Oxygen Sensor
    $2,242.95
    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes NTK Oxygen Sensor
    $2,242.95
  • Holley Terminator LS MPFI Kit 550-608

    Holley Terminator LS MPFI Kit 550-608

    GM LS1/LS6 Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    $2,157.95
    GM LS1/LS6 Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    $2,157.95
  • Holley LS1/6 (24x/1x) Engine Main Harness 558-102

    Holley LS1/6 (24x/1x) Engine Main Harness 558-102

    LS1/6 Main Harness for HP EFI & Dominator EFI
    $449.95
    LS1/6 Main Harness for HP EFI & Dominator EFI
    $449.95
  • Holley Terminator LS MPFI Kit 550-613

    Holley Terminator LS MPFI Kit 550-613

    GM LS2/LS3 Engines and 2007 to current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor - with DRIVE-BY-WIRE, No Laptop Required, 3.5" Touchscreen Included
    $3,174.95
    GM LS2/LS3 Engines and 2007 to current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor - with DRIVE-BY-WIRE, No Laptop Required, 3.5" Touchscreen Included
    $3,174.95
  • Holley Terminator LS MPFI Kit 550-613

    Holley Terminator LS MPFI Kit 550-613

    GM LS2/LS3 Engines and 2007 to current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor - with DRIVE-BY-WIRE & TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,419.95
    GM LS2/LS3 Engines and 2007 to current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor - with DRIVE-BY-WIRE & TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,419.95
  • Holley HP EFI ECU & Harness Kits - Universal MPFI V8 - Includes NTK Oxygen Sensor 550-604N

    Holley HP EFI ECU & Harness Kits - Universal MPFI V8 - Includes NTK Oxygen Sensor 550-604N

    Universal V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor
    $2,167.95
    Universal V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor
    $2,167.95
  • Holley Terminator LS MPFI Kit 550-61

    Holley Terminator LS MPFI Kit 550-612

    GM LS2/LS3 Engines and 2007 to current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,174.95
    GM LS2/LS3 Engines and 2007 to current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    $3,174.95

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33 Item(s)