Holley is quickly becoming The New Standard In EFI! Holley’s HP ECU is standard equipment on the 2013/2014 Chevrolet COPO Camaro and Holley’s EFI throttle body powers every NASCAR Sprint Cup Series™ team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it to win the 2013 JEGS All-Star race. But that’s not all. The world’s best hot rod builders and tuners are making the switch to Holley EFI. Builders like Dave Lane who used Holley EFI to power the 2013 Goodguys Hot Rod of the Year and tuners like Steve Morris who use it to build some of the baddest forced induction beasts on the planet. It’s the easiest, most refined, feature-rich system that money can buy. But, don’t take our word for it, see what the best are saying about Holley EFI!
Holley EFI
Showing 251–300 of 324 results
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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
Original price was: $2,899.00.$2,417.95Current price is: $2,417.95. -
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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
Original price was: $3,146.00.$2,853.95Current price is: $2,853.95. -
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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
Original price was: $2,899.00.$2,699.95Current price is: $2,699.95. -
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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
Original price was: $3,146.00.$3,006.95Current price is: $3,006.95. -
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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
Original price was: $2,899.00.$2,417.95Current price is: $2,417.95. -
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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
Original price was: $3,146.00.$2,853.95Current price is: $2,853.95. -
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HOLLEY EFI HP EFI ECU & HARNESS KITS GM TPI and Holley Stealth Ram™, Includes Bosch Oxygen Sensor Part # 550-601
Original price was: $2,803.00.$2,249.95Current price is: $2,249.95. -
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HOLLEY EFI HP EFI ECU & HARNESS KITS GM TPI and Holley Stealth Ram™, Includes NTK Oxygen Sensor Part # 550-601N
Original price was: $3,042.00.$2,906.95Current price is: $2,906.95. -
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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
Original price was: $2,735.00.$2,613.95Current price is: $2,613.95. -
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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
Original price was: $2,985.00.$2,489.95Current price is: $2,489.95. -
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HOLLEY EFI HP EFI ECU & HARNESS KITS Universal V8 Multi-Point Fuel Injection, Includes Bosch Oxygen Sensor Part # 550-604
Original price was: $2,803.00.$2,249.95Current price is: $2,249.95. -
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HOLLEY EFI HP EFI ECU & HARNESS KITS Universal V8 Multi-Point Fuel Injection, Includes NTK Oxygen Sensor Part # 550-604N
Original price was: $3,042.00.$2,536.95Current price is: $2,536.95. -
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HOLLEY EFI HP EFI ECU & HARNESS KITS Unterminated Universal Harness, Includes Bosch Oxygen Sensor Part # 550-605
Original price was: $2,803.00.$2,541.95Current price is: $2,541.95. -
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HOLLEY EFI HP EFI ECU & HARNESS KITS Unterminated Universal Harness, Includes NTK Oxygen Sensor Part # 550-605N
Original price was: $3,042.00.$2,699.95Current price is: $2,699.95. -
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HOLLEY EFI HP EFI ECU HP EFI ECU, USB Cable, and Software Part # 554-113
Original price was: $1,878.00.$1,566.95Current price is: $1,566.95. -
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HOLLEY EFI HP SMART COIL IGNITION HARNESS For use with Holley® HP and Dominator ECUs and other EFI systems Part # 558-312
Original price was: $228.00.$217.95Current price is: $217.95. -
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HOLLEY EFI INJECTOR DRIVER HARNESS Part # 558-219
Original price was: $286.00.$258.95Current price is: $258.95. -
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HOLLEY EFI INJECTOR HARNESS – EARLY TRUCK LS MULTEC 2 INJECTOR HARNESS – EARLY TRUCK Part # 558-214
Original price was: $252.00.$227.95Current price is: $227.95. -
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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
Original price was: $110.00.$104.95Current price is: $104.95. -
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HOLLEY EFI LS COIL HARNESSES Factory replacement coil harness for stock LS coils, does not fit LS1 or LS6 Coils. Part # 558-321
Original price was: $195.00.$161.95Current price is: $161.95. -
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HOLLEY EFI LS1/6 (24X/1X) ENGINE MAIN HARNESS LS1/6 Main Harness for HP EFI & Dominator EFI Part # 558-102
Original price was: $627.00.$522.95Current price is: $522.95. -
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HOLLEY EFI LS1/6 (24X/1X) ENGINE MAIN HARNESS, EXTENDED LENGTH LS1/6 Main Harness for HP EFI & Dominator EFI Part # 558-133
Original price was: $582.00.$555.95Current price is: $555.95. -
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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
Original price was: $582.00.$555.95Current price is: $555.95. -
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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
Original price was: $627.00.$522.95Current price is: $522.95. -
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HOLLEY EFI LSX INJECTOR HARNESS – FOR EV6 STYLE INJECTORS LSx Injector Harness for HP EFI, Dominator EFI and Terminator X. Part # 558-201
Original price was: $172.00.$142.95Current price is: $142.95. -
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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
Original price was: $605.00.$577.95Current price is: $577.95. -
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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
Original price was: $616.00.$588.95Current price is: $588.95. -
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HOLLEY EFI MAIN POWER HARNESS Main Power Harness for Avenger EFI, HP EFI, & Dominator EFI Part # 558-308
Original price was: $97.89.$81.68Current price is: $81.68. -
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HOLLEY EFI METRIPACK CRIMPING TOOL-150/280 20-14AWG Ratcheting crimper tool for Metri-pack 20-14AWG Terminals. Part # 567-102
Original price was: $206.00.$186.95Current price is: $186.95. -
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HOLLEY EFI SEALED USB DATA CABLE Holley EFI Sealed USB Cable 15′ Part # 558-438
Original price was: $115.00.$109.95Current price is: $109.95. -
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HOLLEY EFI TERMINATOR 1 BAR MAP SENSOR Terminator 1 bar MAP sensor Part # 554-120
Original price was: $97.89.$93.56Current price is: $93.56. -
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HOLLEY EFI TERMINATOR EFI ECU Replacement Terminator EFI ECU Part # 554-119
Original price was: $1,954.00.$1,799.95Current price is: $1,799.95. -
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HOLLEY EFI TERMINATOR FUEL INJECTOR 80 LB/HR – INDIVIDUAL Terminator 80PPH injector (single) Part # 522-801
Original price was: $137.00.$123.95Current price is: $123.95. -
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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
Original price was: $4,450.00.$4,049.95Current price is: $4,049.95. -
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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
Original price was: $3,028.00.$2,893.95Current price is: $2,893.95. -
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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
Original price was: $4,797.00.$4,350.95Current price is: $4,350.95. -
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HOLLEY EFI TERMINATOR MAIN HARNESS Replacement main wiring harness for Terminator EFI kits 550-405 and 550-406 Part # 558-414
Original price was: $434.00.$414.95Current price is: $414.95. -
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HOLLEY EFI TERMINATOR STEALTH 2X4 MAIN HARNESS Part # 558-121
Original price was: $434.00.$414.95Current price is: $414.95. -
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HOLLEY EFI TERMINATOR STEALTH 2X4 PRIMARY THROTTLE BODY SUB HARNESS Part # 558-459
Original price was: $212.00.$191.95Current price is: $191.95. -
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HOLLEY EFI TERMINATOR STEALTH 2X4 SLAVE THROTTLE BODY – CLASSIC GOLD Part # 534-242
Original price was: $1,178.00.$1,059.95Current price is: $1,059.95. -
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HOLLEY EFI TERMINATOR STEALTH 2X4 SLAVE THROTTLE BODY – HARD CORE GRAY Part # 534-241
Original price was: $1,178.00.$1,059.95Current price is: $1,059.95. -
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HOLLEY EFI TERMINATOR STEALTH 2X4 SLAVE THROTTLE BODY – POLISHED Part # 534-240
Original price was: $1,139.00.$717.47Current price is: $717.47. -
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HOLLEY EFI TERMINATOR STEALTH EFI KIT – CLASSIC GOLD FINISH Terminator™ EFI 4bbl Throttle Body Fuel Injection Stealth Finish – Classic Gold Part # 550-444
Original price was: $3,064.00.$2,756.95Current price is: $2,756.95. -
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HOLLEY EFI TERMINATOR STEALTH EFI KIT – HARD CORE GRAY Terminator™ EFI 4bbl Throttle Body Fuel Injection Stealth Finish – Hard Core Gray Part # 550-441
Original price was: $3,156.00.$2,839.95Current price is: $2,839.95. -
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HOLLEY EFI TERMINATOR STEALTH EFI KIT-SHINY Terminator™ EFI 4bbl Throttle Body Fuel Injection Stealth Finish – Polished Part # 550-440
Original price was: $3,078.00.$2,769.95Current price is: $2,769.95. -
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HOLLEY EFI TERMINATOR STEALTH EFI MASTER KIT- CLASSIC GOLD FINISH Terminator™ EFI 4bbl Throttle Body Fuel Injection Stealth & Complete Fuel System Part # 550-444K
Original price was: $3,513.00.$3,293.95Current price is: $3,293.95. -
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HOLLEY EFI TERMINATOR STEALTH EFI MASTER KIT-HARD CORE GRAY Terminator™ EFI 4bbl Throttle Body Fuel Injection Stealth & Complete Fuel System Part # 550-441K
Original price was: $3,773.00.$3,394.95Current price is: $3,394.95. -
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HOLLEY EFI TERMINATOR STEALTH EFI MASTER KIT-SHINY Terminator™ EFI 4bbl Throttle Body Fuel Injection Stealth & Complete Fuel System Part # 550-440K
Original price was: $3,693.00.$3,322.95Current price is: $3,322.95. -
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HOLLEY EFI TERMINATOR STEALTH EFI W/ GM TRANSMISSION CONTROL – CLASSIC GOLD FINISH Terminator™ EFI 4bbl Throttle Body w/ GM Trans Control Fuel Injection Stealth Part # 550-445
Original price was: $3,958.00.$3,561.95Current price is: $3,561.95. -
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HOLLEY EFI TERMINATOR STEALTH EFI W/ GM TRANSMISSION CONTROL – POLISHED Terminator™ EFI 4bbl Throttle Body w/GM Trans Control Fuel Injection Stealth Finish – Polished Part # 550-442
Original price was: $4,002.00.$3,600.95Current price is: $3,600.95.