EFI Systems and Components

Showing 701–750 of 892 results

Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low

• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X MAX – GEN IV 4.8/5.3/6.0 GM TRUCK ENGINES AND LS2/LS3 58x Crank – 4x Cam – EV6 Injectors – Transmission Control – 3.5 in. Touchscreen Part # 550-918

  $2,033.00 Original price was: $2,033.00.$1,645.95Current price is: $1,645.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X MAX – GEN IV 4.8/5.3/6.0 GM TRUCK ENGINES AND LS2/LS3 58x Crank – 4x Cam – EV6 Injectors – Transmission Control – USB/CAN Tuning Cable Part # 550-918T

  $1,969.00 Original price was: $1,969.00.$1,594.95Current price is: $1,594.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X MAX – LS1/LS6 24x Crank – 1x Cam – EV1 Injectors – Drive-By-Wire Throttle Body and Transmission Control – 3.5 in. Touchscreen Part # 550-926

  $2,287.00 Original price was: $2,287.00.$1,907.95Current price is: $1,907.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X MAX – LS1/LS6 24x Crank – 1x Cam – EV1 Injectors – Drive-By-Wire Throttle Body Control – 3.5 in. Touchscreen Part # 550-929

  $2,033.00 Original price was: $2,033.00.$1,695.95Current price is: $1,695.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X MAX – LS1/LS6 24x Crank – 1x Cam – EV1 Injectors – Transmission Control – 3.5 in. Touchscreen Part # 550-916

  $2,033.00 Original price was: $2,033.00.$1,645.95Current price is: $1,645.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X MAX – LS1/LS6 24x Crank – 1x Cam – EV1 Injectors – Transmission Control – USB/CAN Tuning Cable Part # 550-916T

  $1,969.00 Original price was: $1,969.00.$1,641.95Current price is: $1,641.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X MAX – LS1/LS6 24x Crank – 1x Cam – EV6 Injectors – Drive-By-Wire Throttle Body and Transmission Control – 3.5 in. Touchscreen Part # 550-934

  $2,287.00 Original price was: $2,287.00.$1,799.95Current price is: $1,799.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X MAX – LS1/LS6 24x Crank – 1x Cam – EV6 Injectors – Drive-By-Wire Throttle Body Control – 3.5 in. Touchscreen Part # 550-932

  $2,033.00 Original price was: $2,033.00.$1,695.95Current price is: $1,695.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X MAX – LS1/LS6 24x Crank – 1x Cam – EV6 Injectors – Transmission Control – 3.5 in. Touchscreen Part # 550-919

  $2,033.00 Original price was: $2,033.00.$1,645.95Current price is: $1,645.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY EFI TERMINATOR X UNIVERSAL MPFI KIT Universal MPFI Main Harness – EV1 Injectors – 3.5 in. Touchscreen Part # 550-936

  $1,587.00 Original price was: $1,587.00.$1,284.95Current price is: $1,284.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY LCD TOUCH SCREEN Wide range of tuning and data-monitoring options in a compact 3.5″ LCD display Part # 553-108

  $399.00 Original price was: $399.00.$332.95Current price is: $332.95.
• Sale!
  Add to cart

  HOLLEY EFI HOLLEY STANDALONE DIGITAL DASH KIT 7″ Digital Dash, Compact & Fully Customizable! Part # 553-109

  $1,562.00 Original price was: $1,562.00.$1,301.95Current price is: $1,301.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Complete 99-04 2 Valve Ford Modular Engine Plug and Play Kit – Jetronic “Bosch Style” injector harness – Bosch Wideband O2 Part # 550-616

  $2,954.00 Original price was: $2,954.00.$2,699.95Current price is: $2,699.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Complete 99-04 2 Valve Ford Modular Engine Plug and Play Kit – Jetronic “Bosch Style” injector harness – Includes NTK Oxygen Sensor Part # 550-616N

  $3,270.00 Original price was: $3,270.00.$3,125.95Current price is: $3,125.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit – Jetronic “Bosch Style” injector harness – Bosch Wideband O2 Part # 550-617

  $2,954.00 Original price was: $2,954.00.$2,699.95Current price is: $2,699.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Complete 99-04 4 Valve Ford Modular Engine Plug and Play Kit – Jetronic “Bosch Style” injector harness – Includes NTK Oxygen Sensor Part # 550-617N

  $3,270.00 Original price was: $3,270.00.$3,125.95Current price is: $3,125.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes Bosch Oxygen Sensor Part # 550-602

  $2,899.00 Original price was: $2,899.00.$2,417.95Current price is: $2,417.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS GM LS1/LS6 (24x crank sensor) with Jetronic/Minitimer (Bosch type) connectors on injector harness (fits Holley 522-xxx injectors), Includes NTK Oxygen Sensor Part # 550-602N

  $3,146.00 Original price was: $3,146.00.$2,853.95Current price is: $2,853.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS 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 Part # 550-607

  $2,899.00 Original price was: $2,899.00.$2,699.95Current price is: $2,699.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS 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 Part # 550-607N

  $3,146.00 Original price was: $3,146.00.$3,006.95Current price is: $3,006.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes Bosch Oxygen Sensor Part # 550-603

  $2,899.00 Original price was: $2,899.00.$2,599.95Current price is: $2,599.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes NTK Oxygen Sensor Part # 550-603N

  $3,146.00 Original price was: $3,146.00.$2,853.95Current price is: $2,853.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS GM TPI and Holley Stealth Ram™, Includes Bosch Oxygen Sensor Part # 550-601

  $2,803.00 Original price was: $2,803.00.$2,249.95Current price is: $2,249.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS GM TPI and Holley Stealth Ram™, Includes NTK Oxygen Sensor Part # 550-601N

  $3,042.00 Original price was: $3,042.00.$2,906.95Current price is: $2,906.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Universal FORD V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor, and Ford V8 Injector Harness. Part # 550-606

  $2,735.00 Original price was: $2,735.00.$2,613.95Current price is: $2,613.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Universal FORD V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor, and Ford V8 Injector Harness. Part # 550-606N

  $2,985.00 Original price was: $2,985.00.$2,489.95Current price is: $2,489.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Universal V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor Part # 550-604

  $2,803.00 Original price was: $2,803.00.$2,499.95Current price is: $2,499.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Universal V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor Part # 550-604N

  $3,042.00 Original price was: $3,042.00.$2,749.95Current price is: $2,749.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Unterminated Universal Harness, Includes Bosch Oxygen Sensor Part # 550-605

  $2,803.00 Original price was: $2,803.00.$2,541.95Current price is: $2,541.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU & HARNESS KITS Unterminated Universal Harness, Includes NTK Oxygen Sensor Part # 550-605N

  $3,042.00 Original price was: $3,042.00.$2,699.95Current price is: $2,699.95.
• Sale!
  Add to cart

  HOLLEY EFI HP EFI ECU HP EFI ECU, USB Cable, and Software Part # 554-113

  $1,978.00 Original price was: $1,978.00.$1,740.95Current price is: $1,740.95.
• Sale!
  Add to cart

  HOLLEY EFI INJECTOR DRIVER HARNESS Part # 558-219

  $286.00 Original price was: $286.00.$258.95Current price is: $258.95.
• Sale!
  Add to cart

  HOLLEY EFI INJECTOR HARNESS – EARLY TRUCK LS MULTEC 2 INJECTOR HARNESS – EARLY TRUCK Part # 558-214

  $252.00 Original price was: $252.00.$227.95Current price is: $227.95.
• Sale!
  Add to cart

  HOLLEY EFI LS COIL EXTENSION HARNESSES Designed to extend your factory coil harness, allowing you to easily remote mount your LS ignition coils. Part # 558-326

  $110.00 Original price was: $110.00.$104.95Current price is: $104.95.
• Sale!
  Add to cart

  HOLLEY EFI LS COIL HARNESSES Factory replacement coil harness for stock LS coils, does not fit LS1 or LS6 Coils. Part # 558-321

  $195.00 Original price was: $195.00.$161.95Current price is: $161.95.
• Sale!
  Add to cart

  HOLLEY EFI LS1/6 (24X/1X) ENGINE MAIN HARNESS LS1/6 Main Harness for HP EFI & Dominator EFI Part # 558-102

  $627.00 Original price was: $627.00.$522.95Current price is: $522.95.
• Sale!
  Add to cart

  HOLLEY EFI LS1/6 (24X/1X) ENGINE MAIN HARNESS, EXTENDED LENGTH LS1/6 Main Harness for HP EFI & Dominator EFI Part # 558-133

  $582.00 Original price was: $582.00.$555.95Current price is: $555.95.
• Sale!
  Add to cart

  HOLLEY EFI LS2/3/7+ (58X/4X) ENGINE MAIN HARNESS EXTENDED LENGTH LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFI Part # 558-134

  $582.00 Original price was: $582.00.$555.95Current price is: $555.95.
• Sale!
  Add to cart

  HOLLEY EFI LS2/3/7+ (58X/4X) ENGINE MAIN HARNESS LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFI Part # 558-103

  $627.00 Original price was: $627.00.$522.95Current price is: $522.95.
• Sale!
  Add to cart

  HOLLEY EFI LSX INJECTOR HARNESS – FOR EV6 STYLE INJECTORS LSx Injector Harness for HP EFI, Dominator EFI and Terminator X. Part # 558-201

  $172.00 Original price was: $172.00.$142.95Current price is: $142.95.
• Sale!
  Add to cart

  HOLLEY EFI MAIN ENGINE HARNESS FOR 24X LS W/TBI Main Harness for us with 24x/1x Gen 3 LS with Terminator Throttle Body Fuel Injection Part # 558-111

  $605.00 Original price was: $605.00.$577.95Current price is: $577.95.
• Sale!
  Add to cart

  HOLLEY EFI MAIN ENGINE HARNESS FOR 58X LS W/TBI Main Harness for us with 58x/4x Gen 4 LS with Terminator Throttle Body Fuel Injection Part # 558-112

  $616.00 Original price was: $616.00.$588.95Current price is: $588.95.
• Sale!
  Add to cart

  HOLLEY EFI MAIN POWER HARNESS Main Power Harness for Avenger EFI, HP EFI, & Dominator EFI Part # 558-308

  $97.89 Original price was: $97.89.$81.68Current price is: $81.68.
• Sale!
  Add to cart

  HOLLEY EFI SEALED USB DATA CABLE Holley EFI Sealed USB Cable 15′ Part # 558-438

  $115.00 Original price was: $115.00.$109.95Current price is: $109.95.
• Sale!
  Add to cart

  HOLLEY EFI TERMINATOR 1 BAR MAP SENSOR Terminator 1 bar MAP sensor Part # 554-120

  $97.89 Original price was: $97.89.$93.56Current price is: $93.56.
• Sale!
  Add to cart

  HOLLEY EFI TERMINATOR EFI ECU Replacement Terminator EFI ECU Part # 554-119

  $1,954.00 Original price was: $1,954.00.$1,799.95Current price is: $1,799.95.
• Sale!
  Add to cart

  HOLLEY EFI TERMINATOR FUEL INJECTOR 80 LB/HR – INDIVIDUAL Terminator 80PPH injector (single) Part # 522-801

  $137.00 Original price was: $137.00.$123.95Current price is: $123.95.
• Sale!
  Add to cart

  HOLLEY EFI TERMINATOR LS MPFI KIT 1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor – with DRIVE-BY-WIRE, No Laptop Required, 3.5″ Touchscreen Included Part # 550-615

  $4,450.00 Original price was: $4,450.00.$4,049.95Current price is: $4,049.95.
• Sale!
  Add to cart

  HOLLEY EFI TERMINATOR LS MPFI KIT 1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, No Laptop Required, 3.5″ Touchscreen Included Part # 550-614

  $3,028.00 Original price was: $3,028.00.$2,893.95Current price is: $2,893.95.
• Sale!
  Add to cart

  HOLLEY EFI TERMINATOR LS MPFI KIT 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 Part # 550-613

  $4,797.00 Original price was: $4,797.00.$4,350.95Current price is: $4,350.95.