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| Best Seller  | Holley EFI 300-624 Dual Fuel Injector LS1 Lo-Ram Top-Feed EFI Intake Manifold Kit Cast Satin Finish; The Holley LS1/2/6 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads. These intake manifold and rail kits will work with OE (Original Equipment) or... more | FREE shipping go to store |
 | Holley EFI 558-317 Ignition Harness Compatible with 2011 to 2015 Ford Coyote Coil Harness For HP EFI & Dominator EFI; Coil Harness for 2011 to 2015 Ford Coyote (5.0L) Engines; more | FREE shipping go to store |
| Best Seller  | Holley EFI 558-401 Ignition Harness Dominator EFI Connector J2A Auxiliary Harness; Used when adding a second wide band oxygen sensor to a Dominator EFI installation.; more | $219.47 $204.95 FREE shipping go to store |
 | Holley EFI 558-313 Ignition Harness EFI Ignition Adapter Harness for FASTâ„¢ Dual Sync Distributors; The Holley EFI Ignition Adapter Harness for FASTâ„¢ Dual Sync Distributors allows easy connectivity of the Holley EFI wiring harness to the FASTâ„¢ Dual Sync Distributors.; more | $21.49 $15.04 FREE shipping go to store |
 | Holley EFI 558-310 Ignition Harness Gen III HEMI Coil Harness Early Coils for HP EFI & Dominator EFI; Chrysler has used two different coils on the HEMI engine series with 2006 being the year that the change was phased throughout the truck and car line. Fortunately the two coils are very... more | FREE shipping go to store |
 | Holley EFI 558-312 Ignition Harness For use with Holley® HP and Dominator ECUs and other EFI systems; HP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses but plug into... more | FREE shipping go to store |
 | Holley EFI 534-215 Air / Fuel Ratio Gauge Standard 2-1/16 in. Wideband A/F Gauge 8.5-18 Black Face. Includes gauge wiring harness and Bosch LSU 4.9 wideband O2 sensor.; Holley EFI fully standalone 2-1/16 in. Air/Fuel Wideband O2 Gauge Kit. This highly accurate and feature packed unit is... more | FREE shipping go to store |
 | Holley EFI 522-428XFM Flow Matched 42PPH Fuel Injectors Set of 8 PICO/EV6 Style - High Impedance - Flow Matched; Terminator X Flow Matched High Impedance Fuel Injectors are dynamic flow matched within 1% resulting in extremely precision and consistent injector characteristics. These injectors provide excellent... more | $584.00 $553.95 FREE shipping go to store |
 | Holley 200 GPH Dominator In-Line Billet Fuel Pump Carb or EFI Applications Supports up to 1800 EFI or 2100 Carb HP Compatible with Pump Gas* Race Gas Diesel or E85 more | FREE shipping go to store |
 | Holley 558-323 HyperSpark to Terminator X Ignition Adapter Adapters HyperSpark Distributors to Holley EFI Main Harnesses for use with Terminator X EFI.; Designed to plug and play with HyperSpark distributors and Holley EFI main harnesses with an ignition connector such as part number 558-104.; more | $39.48 $35.82 go to store |
 | Holley EFI 550-1005 Terminator X Stealth 4150 Black The Terminator X Stealth 4150 EFI system from Holley features 8 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 1250 HP on forced induction applications.; The Terminator X Stealth 4150 1250HP EFI system from Holley... more | FREE shipping go to store |
 | Holley EFI 550-1311 Terminator X Max Ford Coyote - 2011-2012 w/ Ti-VCT Compatible with 2011-2012 Ford Coyote Engines with Ti-VCT EV6 injectors and a 98+ 4R70W Transmission; Terminator X and X Max Coyote systems supports Ford Coyote platform with Ti-VCT. Terminator X features real-time fuel learn high impedance injector... more | $3,794.81 $2,799.99 FREE shipping go to store |
 | Holley EFI 550-1315 Terminator X Max Ford Coyote - 2015.5-2017 w/ Ti-VCT Compatible with 2015.5-2017 Ford Coyote Engines with Ti-VCT EV6 injectors and a 98+ 4R70W Transmission; Terminator X and X Max Coyote systems supports Ford Coyote platform with Ti-VCT. Terminator X features real-time fuel learn high impedance injector... more | $3,794.81 $2,902.95 FREE shipping go to store |
 | Holley EFI 550-1313 Terminator X Max Ford Coyote - 2013-2015 w/ Ti-VCT Compatible with 2013-2015 Ford Coyote Engines with Ti-VCT EV6 injectors and a 98+ 4R70W Transmission; Terminator X and X Max Coyote systems supports Ford Coyote platform with Ti-VCT. Terminator X features real-time fuel learn high impedance injector... more | $3,794.81 $2,902.95 FREE shipping go to store |
 | Go EFI 3x2 Tri Power EFI System Classic Gold Fuel Injection - Go EFI 3x2 Tri Power - Throttle Body - Holley Flange - Three 2-Barrel - 55 lb/hr Injectors - Fittings / Harness / O2 Sensor / Programmer Included - Aluminum - Gold Powder Coat - Universal - Kit more | FREE shipping go to store |
 | Holley EFI 558-130 Engine Main Harness - LT4 Engine Compatible with GM® Gen V LT4 Engines using Terminator X ECU s Only with V3 build 100 or later. This product is not created or sold by GM®.; This harness is designed for use with Terminator X ECU s Only with V3 build 100 or later.; more | FREE shipping go to store |
 | Holley EFI 558-129 Engine Main Harness - Gen V LT Engine Compatible with GM® Gen V LT Engines using Terminator X and Terminator X Max. This product is not created or sold by GM®.; This harness is designed for use with Terminator X and X Max ECU s Only.; more | FREE shipping go to store |
 | Holley EFI 558-403 Ignition Harness Dominator EFI Connector J3 Auxiliary Harness; Holley has put together a choice of several Dominator EFI auxiliary harnesses. These kits include the loose wires connectors inputs and outputs needed to configure and customize your Dominator EFI system to... more | go to store |
 | Holley EFI 550-1601 Holley EFI Terminator X GM Gen V LT Late Direct Injection Kit No Drive-by-Wire or Transmission Control; Take control of your GM Gen V LT1 L83 or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface when you can have complete control of your engine self-learning fuel... more | FREE shipping go to store |
 | Holley EFI 550-440 Fuel Injection System Terminatorâ„¢ EFI 4bbl Throttle Body Fuel Injection Stealth; Have been hesitant on switching to EFI because you like the traditional look of a carburetor? There is no more need to worry! Holley has you covered with the new Terminator Stealth Throttle... more | FREE shipping go to store |
 | Fuel Injection - Master Kit - Throttle Body Gasket - Hardware Included - Kit more | FREE shipping go to store |
 | Sniper EFI BBD Jeep CJ Kit Shiny Finish Fuel Injection - Sniper EFI - Throttle Body - Carter Flange - Aluminum - Silver - Kit more | FREE shipping go to store |
 | HP EFI ECU And Harness Kit; Universal Ford V8 Multi-Point Fuel Injection; Incl. ECU/Harness; Incl. Bosch Oxygen Sensor; Simple Installation - Plug And Play Looking for a plug and play alternative for your stock or built late model factory EFI engine?... more | FREE shipping go to store |
 | Holley EFI 522-421 Fuel Injector Bosch/EV1 Style High Impedance; Holley EFI Fuel Injectors feature a precision lapped disc valve high-quality brass windings and high-temp O-rings. These injectors provide excellent linearity with no discernible bounce at low pulse widths as commonly... more | go to store |
 | Holley EFI 534-236 Stealth 4150 Braided Fuel Crossover Kit Fits Holley EFI Stealth 4150 or Terminator X Stealth 4150; The Sniper EFI Stealth/Terminator X 4150 Braided Fuel Crossover Kits are designed to be used with either Sniper EFI Stealth 4150 or Terminator X Stealth 4150 systems. These pre-assembled fuel... more | go to store |
 | Holley EFI 850001 Fuel Injector Rail Fuel Rail Kit with Holley Sniper EFI logo . Compatible with LS1/LS2/LS6 Sniper fabricated intake manifolds ; Billet fuel rail kit includes both rails crossover line and mounting hardware. Designed for use with Sniper EFI manifolds only.; more | FREE shipping go to store |
 | Holley EFI 558-325 Holley EFI Pro-Billet Ignition Adapter Adapter MSD Pro-Billet Distributors to Holley EFI Main Harnesses for use with Terminator X EFI.; Designed to plug and play with MSD Pro-Billet distributors and Holley EFI main harnesses with an ignition connector such as part number 558-104.; more | $54.51 $30.70 go to store |
 | Holley EFI 558-461 Holley EFI Ford GT500 and 3V Drive-by-Wire Throttle Body Harness Compatible with 2005-2010 Ford Mustang GT and GT500 Models; Introducing a new Holley EFI DBW Throttle Body wiring harness for the OEM (Original Equipment Manufacturer) Ford Throttle Body commonly found on 2005-2010 Mustang GT s and the GT500. This... more | FREE shipping go to store |
 | Holley EFI 558-465 Holley EFI CAN Splitter The Holley EFI CAN splitter allows you to add an additional CAN device to your Sniper EFI or Terminator X installation without needing to unplug the handheld. This easy to install CAN splitter simply plugs into the CAN connector on your main harness... more | $59.61 $48.81 FREE shipping go to store |
 | Holley EFI 558-210 Fuel Injection Harness Gen III HEMI Injector Harness with Stock/USCAR style Injectors for HP EFI & Dominator EFI; An Injector Harness is required and Holley offers two. The harness with USCAR/Stock injector connectors will cover most applications that are using the factory... more | $188.90 $153.95 FREE shipping go to store |
 | Holley EFI 558-111 Fuel Injection Harness MAIN HARNESS TERMINATOR TBI LSX 24X; MAIN HARNESS TERMINATOR TBI LSX 24X; more | FREE shipping go to store |
 | Holley EFI 558-424 Fuel Injection Harness 4FT Extension Harness; Can Extension Harness (for Racepak and other external CAN drives); more | FREE shipping go to store |
 | Holley EFI 558-202 Fuel Injection Harness Universal 4 Cylinder Injector Harness for HP EFI & Dominator EFI; Holley offers a variety of direct replacement EFI wiring harnesses including multi-port sequential and throttle body injection styles. These units are made with premium components to... more | $76.97 $53.88 FREE shipping go to store |
 | Holley EFI 558-216 Fuel Injection Harness EV6 Unterminated Injector Harness Kit; Introducing the latest addition to the Holley EFI Product Lineup! Holley s EV6 unterminated injector harness is perfect for anyone wanting to add EV6 injectors to their engine bay. This harness kit comes with... more | FREE shipping go to store |
 | Holley EFI 558-408 Fuel Injector Connector j2A j2B j3 j4 Connector & Pin Kit - Contains connectors & pins but no wiring. for Dominator EFI; j2A j2B j3 j4 Connector & Pin Kit - Contains connectors & pins but no wiring. for Dominator EFI; more | FREE shipping go to store |
 | Holley EFI 558-406 Fuel Injection Harness Dominator EFI GM Drive-By-Wire Harness; Dominator EFI GM Drive-By-Wire Harness; more | FREE shipping go to store |
 | Holley EFI 558-201 Fuel Injection Harness LSx Injector Harness for HP EFI Dominator EFI and Terminator X.; These Holley replacement fuel injector wiring harnesses are replacements for the 8-cylinder injector harnesses. They connect the main harness to the injectors routing the wires over the... more | FREE shipping go to store |
 | Holley EFI 558-206 Fuel Injection Harness 2x4 BBL Holley TBI Injector Harness for HP EFI & Dominator EFI; 2x4 BBL Holley TBI Injector Harness for HP EFI & Dominator EFI ; more | FREE shipping go to store |
 | Holley EFI 558-502 Fuel Injection Harness GM LS2/LS3/LS7 58X Crank Sensor Bosch Injector; An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Holley s Holley EFI Harness Kit comes... more | FREE shipping go to store |
 | Holley EFI 558-213 Fuel Injection Harness Evenly spaced Ford V8 Injector Harness for Jetronic Bosch EV1 style Injectors; Ford V8 Injector Harness for Jetronic Bosch style Fuel Injectors (Evenly Spaced); more | FREE shipping go to store |
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