Fuel Injection Kits and Harnesses

Fuel Injection Kits and Harnesses

33 Items

per page
Set Descending Direction
  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
    Retrieving Price...
    Reg. $3,017.95 Sale $3,017.95
    $3,017.95
    HP EFI Universal MPI Retrofit Kit, 4150™ carburetor style intake manifolds
    Retrieving Price...
    Reg. $3,017.95 Sale $3,017.95
    $3,017.95
  2. MSD Atomic EFI Master Kit 2900
    MSD Atomic EFI Master Kit 2900
    MSD Atomic EFI Master Kit 2900
    Retrieving Price...
    Reg. $1,469.95 Sale $1,469.95
    $1,469.95
    MSD Atomic EFI Master Kit 2900
    Retrieving Price...
    Reg. $1,469.95 Sale $1,469.95
    $1,469.95
  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
    Retrieving Price...
    Reg. $3,663.95 Sale $3,663.95
    $3,663.95
    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
    Retrieving Price...
    Reg. $3,663.95 Sale $3,663.95
    $3,663.95
  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
    Retrieving Price...
    Reg. $1,336.95 Sale $1,336.95
    $1,336.95
    1971-1986 Jeep CJ's with 258ci 6 Cylinder Engines
    Retrieving Price...
    Reg. $1,336.95 Sale $1,336.95
    $1,336.95
  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
    Retrieving Price...
    Reg. $3,685.95 Sale $3,685.95
    $3,685.95
    HP EFI Multi-Port Fuel Injection System V8 4 bbl, Single Plane Small Block Chevy, Early to Late Heads
    Retrieving Price...
    Reg. $3,685.95 Sale $3,685.95
    $3,685.95
  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
    Retrieving Price...
    Reg. $2,140.95 Sale $2,140.95
    $2,140.95
    Unterminated Universal Harness, Includes Bosch Oxygen Sensor
    Retrieving Price...
    Reg. $2,140.95 Sale $2,140.95
    $2,140.95
  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
    Retrieving Price...
    Reg. $658.95 Sale $658.95
    $658.95
    GM LS1/6, 24X Crank Sensor, Bosch Injector
    Retrieving Price...
    Reg. $658.95 Sale $658.95
    $658.95
  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
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
  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
    Retrieving Price...
    Reg. $2,497.95 Sale $2,497.95
    $2,497.95
    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Includes NTK Oxygen Sensor
    Retrieving Price...
    Reg. $2,497.95 Sale $2,497.95
    $2,497.95
  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
    Retrieving Price...
    Reg. $2,402.95 Sale $2,402.95
    $2,402.95
    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes NTK Oxygen Sensor
    Retrieving Price...
    Reg. $2,402.95 Sale $2,402.95
    $2,402.95
  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
    Retrieving Price...
    Reg. $2,140.95 Sale $2,140.95
    $2,140.95
    GM TPI and Holley Stealth Ram™, Includes Bosch Oxygen Sensor
    Retrieving Price...
    Reg. $2,140.95 Sale $2,140.95
    $2,140.95
  12. Holley EFI Fuel System Kit 526-5
    Holley EFI Fuel System Kit 526-5
    Holley EFI Fuel System Kit 526-5
    Retrieving Price...
    Reg. $335.95 Sale $335.95
    $335.95
    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!
    Retrieving Price...
    Reg. $335.95 Sale $335.95
    $335.95
  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
    Retrieving Price...
    Reg. $2,402.95 Sale $2,402.95
    $2,402.95
    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
    Retrieving Price...
    Reg. $2,402.95 Sale $2,402.95
    $2,402.95
  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
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
    Complete 99-04 2 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
  15. Holley Terminator LS MPFI Kit 550-610
    Holley Terminator LS MPFI Kit 550-610
    Holley Terminator LS MPFI Kit 550-610
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
    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
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
  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
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
    Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit - Jetronic “Bosch Style” injector harness - Bosch Wideband O2
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
  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
    Retrieving Price...
    Reg. $2,213.95 Sale $2,213.95
    $2,213.95
    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
    Retrieving Price...
    Reg. $2,213.95 Sale $2,213.95
    $2,213.95
  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
    Retrieving Price...
    Reg. $2,322.95 Sale $2,322.95
    $2,322.95
    Unterminated Universal Harness, Includes NTK Oxygen Sensor
    Retrieving Price...
    Reg. $2,322.95 Sale $2,322.95
    $2,322.95
  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
    Retrieving Price...
    Reg. $580.95 Sale $580.95
    $580.95
    Universal V8 MPFI
    Retrieving Price...
    Reg. $580.95 Sale $580.95
    $580.95
  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
    Retrieving Price...
    Reg. $2,088.95 Sale $2,088.95
    $2,088.95
    Universal FORD V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor, and Ford V8 Injector Harness.
    Retrieving Price...
    Reg. $2,088.95 Sale $2,088.95
    $2,088.95
  21. Holley Terminator LS MPFI Kit 550-609
    Holley Terminator LS MPFI Kit 550-609
    Holley Terminator LS MPFI Kit 550-609
    Retrieving Price...
    Reg. $3,400.95 Sale $3,400.95
    $3,400.95
    GM LS1/LS6 Engines with 24x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    Retrieving Price...
    Reg. $3,400.95 Sale $3,400.95
    $3,400.95
  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
    Retrieving Price...
    Reg. $2,140.95 Sale $2,140.95
    $2,140.95
    Universal V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor
    Retrieving Price...
    Reg. $2,140.95 Sale $2,140.95
    $2,140.95
  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
    Retrieving Price...
    Reg. $2,213.95 Sale $2,213.95
    $2,213.95
    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor
    Retrieving Price...
    Reg. $2,213.95 Sale $2,213.95
    $2,213.95
  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
    Retrieving Price...
    Reg. $2,279.95 Sale $2,279.95
    $2,279.95
    Universal FORD V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor, and Ford V8 Injector Harness.
    Retrieving Price...
    Reg. $2,279.95 Sale $2,279.95
    $2,279.95
  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
    Retrieving Price...
    Reg. $2,213.95 Sale $2,213.95
    $2,213.95
    GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes Bosch Oxygen Sensor
    Retrieving Price...
    Reg. $2,213.95 Sale $2,213.95
    $2,213.95
  26. Holley Terminator LS MPFI Kit 550-622
    Holley Terminator LS MPFI Kit 550-622
    Holley Terminator LS MPFI Kit 550-622
    Retrieving Price...
    Reg. $3,400.95 Sale $3,400.95
    $3,400.95
    1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor - with TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    Retrieving Price...
    Reg. $3,400.95 Sale $3,400.95
    $3,400.95
  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
    Retrieving Price...
    Reg. $2,402.95 Sale $2,402.95
    $2,402.95
    GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes NTK Oxygen Sensor
    Retrieving Price...
    Reg. $2,402.95 Sale $2,402.95
    $2,402.95
  28. Holley Terminator LS MPFI Kit 550-608
    Holley Terminator LS MPFI Kit 550-608
    Holley Terminator LS MPFI Kit 550-608
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
    GM LS1/LS6 Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    Retrieving Price...
    Reg. $2,312.95 Sale $2,312.95
    $2,312.95
  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
    Retrieving Price...
    Reg. $481.95 Sale $481.95
    $481.95
    LS1/6 Main Harness for HP EFI & Dominator EFI
    Retrieving Price...
    Reg. $481.95 Sale $481.95
    $481.95
  30. Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-611
    Retrieving Price...
    Reg. $3,400.95 Sale $3,400.95
    $3,400.95
    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
    Retrieving Price...
    Reg. $3,400.95 Sale $3,400.95
    $3,400.95
  31. Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-613
    Holley Terminator LS MPFI Kit 550-613
    Retrieving Price...
    Reg. $3,663.95 Sale $3,663.95
    $3,663.95
    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
    Retrieving Price...
    Reg. $3,663.95 Sale $3,663.95
    $3,663.95
  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
    Retrieving Price...
    Reg. $2,322.95 Sale $2,322.95
    $2,322.95
    Universal V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor
    Retrieving Price...
    Reg. $2,322.95 Sale $2,322.95
    $2,322.95
  33. Holley Terminator LS MPFI Kit 550-61
    Holley Terminator LS MPFI Kit 550-61
    Holley Terminator LS MPFI Kit 550-612
    Retrieving Price...
    Reg. $3,400.95 Sale $3,400.95
    $3,400.95
    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
    Retrieving Price...
    Reg. $3,400.95 Sale $3,400.95
    $3,400.95

33 Items

per page
Set Descending Direction
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.