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Fuel Injection Kits and Harnesses

Fuel Injection Kits and Harnesses

Items 1-36 of 71

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  1. Holley HP EFI Universal MPI Retrofit Kits 550-500
    Holley HP EFI Universal MPI Retrofit Kits 550-500
    Holley HP EFI Universal MPI Retrofit Kits 550-500
    $3,168.95
    HP EFI Universal MPI Retrofit Kit, 4150™ carburetor style intake manifolds
    Learn More
    $3,168.95
  2. MSD Atomic EFI Master Kit 2900
    MSD Atomic EFI Master Kit 2900
    MSD Atomic EFI Master Kit 2900
    $1,543.95
    MSD Atomic EFI Master Kit 2900
    Learn More
    $1,543.95
  3. 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
    Holley Terminator LS MPFI Kit - GM 97-07 4.8/5.3/6.0L Truck
    $3,847.95
    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
    Learn More
    $3,847.95
  4. 71-86 Jeep CJ Holley Sniper EFI BBD Master Kit 550-858K
    71-86 Jeep CJ Holley Sniper EFI BBD Master Kit 550-858K
    71-86 Jeep CJ Holley Sniper EFI BBD Master Kit 550-858K
    $1,403.95
    1971-1986 Jeep CJ's with 258ci 6 Cylinder Engines
    Learn More
    $1,403.95
  5. Holley HP EFI 4bbl Multi Port Fuel Injection System 550-810
    Holley HP EFI 4bbl Multi Port Fuel Injection System 550-810
    Holley HP EFI 4bbl Multi Port Fuel Injection System 550-810
    $3,870.95
    HP EFI Multi-Port Fuel Injection System V8 4 bbl, Single Plane Small Block Chevy, Early to Late Heads
    Learn More
    $3,870.95
  6. 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
    Holley HP EFI ECU & Harness Kits - Universal - Includes Bosc
    $2,247.95
    Unterminated Universal Harness, Includes Bosch Oxygen Sensor
    Learn More
    $2,247.95
  7. Holley GM LS 24X EFI Harness Kit 558-500
    Holley GM LS 24X EFI Harness Kit 558-500
    Holley GM LS 24X EFI Harness Kit 558-500
    $691.95
    GM LS1/6, 24X Crank Sensor, Bosch Injector
    Learn More
    $691.95
  8. 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
    Holley Terminator LS MPFI Kit - GM 97-07 4.8/5.3/6.0L Truck
    $2,428.95
    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    Learn More
    $2,428.95
  9. 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
    Holley HP EFI ECU & Harness Kits - 99-04 Ford 4 Valve Modula
    $2,622.95
    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Includes NTK Oxygen Sensor
    Learn More
    $2,622.95
  10. 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
    Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes NTK
    $2,523.95
    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes NTK Oxygen Sensor
    Learn More
    $2,523.95
  11. 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
    Holley HP EFI ECU & Harness Kits - GM TPI and Holley Stealth
    $2,247.95
    GM TPI and Holley Stealth Ram™, Includes Bosch Oxygen Sensor
    Learn More
    $2,247.95
  12. Holley EFI Fuel System Kit 526-5
    Holley EFI Fuel System Kit 526-5
    Holley EFI Fuel System Kit 526-5
    $352.95
    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!
    Learn More
    $352.95
  13. 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
    Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes NTK
    $2,523.95
    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
    Learn More
    $2,523.95
  14. 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
    Holley HP EFI ECU & Harness Kits - 99-04 4 Valve Ford Modula
    $2,428.95
    Complete 99-04 2 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    Learn More
    $2,428.95
  15. Holley Terminator LS MPFI Kit 550-610
    Holley Terminator LS MPFI Kit 550-610
    Holley Terminator LS MPFI Kit 550-610
    $2,428.95
    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
    Learn More
    $2,428.95
  16. 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
    Holley HP EFI ECU & Harness Kits - 99-04 4 Valve Ford Modula
    $2,428.95
    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    Learn More
    $2,428.95
  17. 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
    Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes Bos
    $2,324.95
    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
    Learn More
    $2,324.95
  18. 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
    Holley HP EFI ECU & Harness Kits - Universal - Includes NTK
    $2,439.95
    Unterminated Universal Harness, Includes NTK Oxygen Sensor
    Learn More
    $2,439.95
  19. Holley Universal V8 MPFI EFI Harness Kit 558-504
    Holley Universal V8 MPFI EFI Harness Kit 558-504
    Holley Universal V8 MPFI EFI Harness Kit 558-504
    $609.95
    Universal V8 MPFI
    Learn More
    $609.95
  20. 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
    Holley HP EFI ECU & Harness Kits - Universal Ford V8 MPFI - Includes Bosch Oxygen Sensor 550-606
    $2,193.95
    Universal FORD V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor, and Ford V8 Injector Harness.
    Learn More
    $2,193.95
  21. Holley Terminator LS MPFI Kit 550-609
    Holley Terminator LS MPFI Kit 550-609
    Holley Terminator LS MPFI Kit 550-609
    $3,570.95
    GM LS1/LS6 Engines with 24x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    Learn More
    $3,570.95
  22. 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
    Holley HP EFI ECU & Harness Kits - Universal MPFI V8 - Includes Bosch Oxygen Sensor 550-604
    $2,247.95
    Universal V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor
    Learn More
    $2,247.95
  23. 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
    Holley HP EFI ECU & Harness Kits - GM LS1/6 - Includes Bosch Oxygen Sensor 550-602
    $2,324.95
    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor
    Learn More
    $2,324.95
  24. 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
    Holley HP EFI ECU & Harness Kits - Universal Ford MPFI V8 - Includes NTK Oxygen Sensor 550-606N
    $2,393.95
    Universal FORD V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor, and Ford V8 Injector Harness.
    Learn More
    $2,393.95
  25. 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
    Holley HP EFI ECU & Harness Kits - GM LS2/3/7 - Includes Bosch Oxygen Sensor 550-603
    $2,324.95
    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes Bosch Oxygen Sensor
    Learn More
    $2,324.95
  26. Holley Terminator LS MPFI Kit 550-622
    Holley Terminator LS MPFI Kit 550-622
    Holley Terminator LS MPFI Kit 550-622
    $3,570.95
    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    Learn More
    $3,570.95
  27. 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
    Holley HP EFI ECU & Harness Kits - GM LS1/6 - Includes NTK Oxygen Sensor 550-602N
    $2,523.95
    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes NTK Oxygen Sensor
    Learn More
    $2,523.95
  28. Holley Terminator LS MPFI Kit 550-608
    Holley Terminator LS MPFI Kit 550-608
    Holley Terminator LS MPFI Kit 550-608
    $2,428.95
    GM LS1/LS6 Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    Learn More
    $2,428.95
  29. Holley LS1/6 (24x/1x) Engine Main Harness 558-102
    Holley LS1/6 (24x/1x) Engine Main Harness 558-102
    Holley LS1/6 (24x/1x) Engine Main Harness 558-102
    $506.95
    LS1/6 Main Harness for HP EFI & Dominator EFI
    Learn More
    $506.95
  30. Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-611
    $3,570.95
    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
    Learn More
    $3,570.95
  31. Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-613
    $3,847.95
    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
    Learn More
    $3,847.95
  32. 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
    Holley HP EFI ECU & Harness Kits - Universal MPFI V8 - Includes NTK Oxygen Sensor 550-604N
    $2,439.95
    Universal V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor
    Learn More
    $2,439.95
  33. Holley Terminator LS MPFI Kit 550-61
    Holley Terminator LS MPFI Kit 550-61
    Holley Terminator LS MPFI Kit 550-612
    $3,570.95
    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
    Learn More
    $3,570.95
  34. FiTech Fuel Injection Go Street EFI 400HP System 30003
    FiTech Fuel Injection Go Street EFI 400HP System 30003
    FiTech Fuel Injection Go Street EFI 400HP System 30003
    $869.00
    Bolt-on EFI conversion supports up to 400HP
    Learn More
    $869.00
  35. FiTech Go EFI 4 600HP System Matte Black 30002
    FiTech Go EFI 4 600HP System Matte Black 30002
    FiTech Go EFI 4 600HP System Matte Black 30002
    $999.00
    Bolt-on EFI conversion supports up to 650HP
    Learn More
    $999.00
  36. FiTech Go Street EFI System Master Kit w/Inline Fuel Pump 31003
    FiTech Go Street EFI System Master Kit w/Inline Fuel Pump 31003
    FiTech Go Street EFI System Master Kit w/Inline Fuel Pump 31003
    $1,125.99
    Go Street EFI System Master Kit w/Inline Fuel Pump
    Learn More
    $1,125.99

Items 1-36 of 71

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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.