Fuel Injection Kits and Harnesses

Fuel Injection Kits and Harnesses

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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
    HP EFI Universal MPI Retrofit Kit, 4150™ carburetor style intake manifolds
    $3,327.95
    $3,327.95
  2. MSD Atomic EFI Master Kit 2900
    MSD Atomic EFI Master Kit 2900
    MSD Atomic EFI Master Kit 2900
    MSD Atomic EFI Master Kit 2900
    $1,621.95
    $1,621.95
  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
    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
    $4,040.95
    $4,040.95
  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
    1971-1986 Jeep CJ's with 258ci 6 Cylinder Engines
    $1,474.95
    $1,474.95
  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
    HP EFI Multi-Port Fuel Injection System V8 4 bbl, Single Plane Small Block Chevy, Early to Late Heads
    $4,064.95
    $4,064.95
  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
    Unterminated Universal Harness, Includes Bosch Oxygen Sensor
    $2,360.95
    $2,360.95
  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
    GM LS1/6, 24X Crank Sensor, Bosch Injector
    $726.95
    $726.95
  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
    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    $2,550.95
    $2,550.95
  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
    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Includes NTK Oxygen Sensor
    $2,754.95
    $2,754.95
  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
    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes NTK Oxygen Sensor
    $2,650.95
    $2,650.95
  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
    GM TPI and Holley Stealth Ram™, Includes Bosch Oxygen Sensor
    $2,360.95
    $2,360.95
  12. Holley EFI Fuel System Kit 526-5
    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!
    $370.95
    $370.95
  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
    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
    $2,650.95
    $2,650.95
  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
    Complete 99-04 2 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    $2,550.95
    $2,550.95
  15. Holley Terminator LS MPFI Kit 550-610
    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
    $2,550.95
    $2,550.95
  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
    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    $2,550.95
    $2,550.95
  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
    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
    $2,441.95
    $2,441.95
  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
    Unterminated Universal Harness, Includes NTK Oxygen Sensor
    $2,561.95
    $2,561.95
  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
    Universal V8 MPFI
    $640.95
    $640.95
  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
    Universal FORD V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor, and Ford V8 Injector Harness.
    $2,303.95
    $2,303.95
  21. Holley Terminator LS MPFI Kit 550-609
    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
    $3,749.95
    $3,749.95
  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
    Universal V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor
    $2,360.95
    $2,360.95
  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
    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor
    $2,441.95
    $2,441.95
  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
    Universal FORD V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor, and Ford V8 Injector Harness.
    $2,513.95
    $2,513.95
  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
    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes Bosch Oxygen Sensor
    $2,441.95
    $2,441.95
  26. Holley Terminator LS MPFI Kit 550-622
    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
    $3,749.95
    $3,749.95
  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
    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes NTK Oxygen Sensor
    $2,650.95
    $2,650.95
  28. Holley Terminator LS MPFI Kit 550-608
    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
    $2,550.95
    $2,550.95
  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
    LS1/6 Main Harness for HP EFI & Dominator EFI
    $532.95
    $532.95
  30. Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-611
    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
    $3,749.95
    $3,749.95
  31. Holley Terminator LS MPFI Kit 550-613
    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
    $4,040.95
    $4,040.95
  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
    Universal V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor
    $2,561.95
    $2,561.95
  33. Holley Terminator LS MPFI Kit 550-61
    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
    $3,749.95
    $3,749.95
  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
    Bolt-on EFI conversion supports up to 400HP
    $869.00
    $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
    Bolt-on EFI conversion supports up to 650HP
    $999.00
    $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
    Go Street EFI System Master Kit w/Inline Fuel Pump
    $1,125.99
    $1,125.99
  37. FiTech Easy Street EFI 600HP Classic Gold EFI 30005
    FiTech Easy Street EFI 600HP Classic Gold EFI 30005
    FiTech Easy Street EFI 600HP Classic Gold EFI 30005
    Bolt-on EFI conversion supports up to 600HP
    $869.00
    $869.00
  38. FiTech Mean Street - 800 HP EFI System - Matte Black Finish 30008
    FiTech Mean Street - 800 HP EFI System - Matte Black Finish 30008
    FiTech Mean Street - 800 HP EFI System - Matte Black Finish 30008
    Bolt-on EFI conversion supports up to 800HP
    $1,099.00
    $1,099.00
  39. FiTech Go EFI 4 - 600 HP EFI System - Power Adder - Matte Black Finish 30004
    FiTech Go EFI 4 - 600 HP EFI System - Power Adder - Matte Black Finish 30004
    FiTech Go EFI 4 - 600 HP EFI System - Power Adder - Matte Black Finish 30004
    Bolt-on EFI conversion supports up to 650HP
    $1,199.00
    $1,199.00
  40. FiTech Go EFI 8 - 1200 HP EFI System - Power Adder - Matte Black Finish 30012
    FiTech Go EFI 8 - 1200 HP EFI System - Power Adder - Matte Black Finish 30012
    FiTech Go EFI 8 - 1200 HP EFI System - Power Adder - Matte Black Finish 30012
    Bolt-on EFI conversion supports up to 1200HP
    Reg. $1,499.00 Sale $1,292.97 Save $206.03
    Reg. $1,499.00 Sale $1,292.97 Save $206.03
  41. FiTech Go Street EFI System Master Kit Matte Black w/Inline Fuel Pump 31002
    FiTech Go Street EFI System Master Kit Matte Black w/Inline Fuel Pump 31002
    FiTech Go Street EFI System Master Kit Matte Black w/Inline Fuel Pump 31002
    Go Street EFI System Master Kit w/Inline Fuel Pump
    Reg. $1,272.99 Sale $1,127.97 Save $145.02
    Reg. $1,272.99 Sale $1,127.97 Save $145.02
  42. FiTech Go EFI 2 Barrel Kit - 400HP - Classic Gold - w/Force Fuel System 35001
    FiTech Go EFI 2 Barrel Kit - 400HP - Classic Gold - w/Force Fuel System 35001
    FiTech Go EFI 2 Barrel Kit - 400HP - Classic Gold - w/Force Fuel System 35001
    FiTech Go EFI 2 Barrel Kit - 400HP - Classic Gold - w/Force Fuel System 35001
    $1,259.99
    $1,259.99
  43. FiTech Go EFI 4 Barrel Kit - 600HP - Aluminum Finish - w/ Force Fuel System 35201
    FiTech Go EFI 4 Barrel Kit - 600HP - Aluminum Finish - w/ Force Fuel System 35201
    FiTech Go EFI 4 Barrel Kit - 600HP - Aluminum Finish - w/ Force Fuel System 35201
    FiTech Go EFI 4 Barrel Kit - 600HP - Aluminum Finish - w/ Force Fuel System 35201
    Reg. $1,397.99 Sale $1,125.97 Save $272.02
    Reg. $1,397.99 Sale $1,125.97 Save $272.02
  44. FiTech Go EFI 4 Barrel Kit - 600HP - Black Finish - w/ Force Fuel System 35202
    FiTech Go EFI 4 Barrel Kit - 600HP - Black Finish - w/ Force Fuel System 35202
    FiTech Go EFI 4 Barrel Kit - 600HP - Black Finish - w/ Force Fuel System 35202
    FiTech Go EFI 4 Barrel Kit - 600HP - Black Finish - w/ Force Fuel System 35202
    Reg. $1,397.99 Sale $1,125.97 Save $272.02
    Reg. $1,397.99 Sale $1,125.97 Save $272.02
  45. FiTech Go Street 4 Barrel Kit - 400HP - Cast Finish - w/ Force Fuel System 35203
    FiTech Go Street 4 Barrel Kit - 400HP - Cast Finish - w/ Force Fuel System 35203
    FiTech Go Street 4 Barrel Kit - 400HP - Cast Finish - w/ Force Fuel System 35203
    FiTech Go Street 4 Barrel Kit - 400HP - Cast Finish - w/ Force Fuel System 35203
    $1,259.99
    $1,259.99
  46. FiTech Go EFI Power Adder 4 Barrel Kit - 600HP - Black Finish - w/ Force Fuel System 35204
    FiTech Go EFI Power Adder 4 Barrel Kit - 600HP - Black Finish - w/ Force Fuel System 35204
    FiTech Go EFI Power Adder 4 Barrel Kit - 600HP - Black Finish - w/ Force Fuel System 35204
    FiTech Go EFI Power Adder 4 Barrel Kit - 600HP - Black Finish - w/ Force Fuel System 35204
    Reg. $1,592.99 Sale $1,282.97 Save $310.02
    Reg. $1,592.99 Sale $1,282.97 Save $310.02
  47. FiTech Easy Street 4 Barrel Kit - 600HP - Classic Gold - w/ Force Fuel System 35205
    FiTech Easy Street 4 Barrel Kit - 600HP - Classic Gold - w/ Force Fuel System 35205
    FiTech Easy Street 4 Barrel Kit - 600HP - Classic Gold - w/ Force Fuel System 35205
    FiTech Easy Street 4 Barrel Kit - 600HP - Classic Gold - w/ Force Fuel System 35205
    $1,259.99
    $1,259.99
  48. FiTech Mean Street 4 Barrel Kit - 800HP - Black Finish - w/ Force Fuel System 35208
    FiTech Mean Street 4 Barrel Kit - 800HP - Black Finish - w/ Force Fuel System 35208
    FiTech Mean Street 4 Barrel Kit - 800HP - Black Finish - w/ Force Fuel System 35208
    FiTech Mean Street 4 Barrel Kit - 800HP - Black Finish - w/ Force Fuel System 35208
    $1,495.99
    $1,495.99

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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.