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Holley ECU mounting brackets allow you to comfortably install either the Dominator ECU, Holley HP, Terminator X, or Terminator X-MAX under your Mustang's front passenger seat. They're designed to work with stock seats and seat tracks (modified/race seats may or may not accommodate them). You simply route all your ECU harnesses through the firewall--properly route the wires, install the unit followed by the ECU, and then reconnect your wires and go! Use your laptop to fine-tune the ECU without popping the hood and protect it from engine bay heat with Holley ECU mounting brackets. Order the brackets recommended for your application.
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$110.95
$99.85
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$103.95
On Sale
Holley ignition coil spacers are great for turbo builds or other applications where more ignition coil clearance is needed. They are available for Gen I and Gen V coils. Choose the spacers designed for your coils.
Not Yet Reviewed
$15.47
$8.51
On Sale
Holley Sniper EFI HyperSpark ignition coils are the perfect ignition upgrade to complement your Sniper EFI installation. This high-output coil produces 135mJ of spark energy when used with the HyperSpark ignition box, ensuring complete combustion. The ignition coil comes self-contained in its own mounting bracket, and mounting hardware is provided to facilitate installation. Holley Sniper EFI HyperSpark ignition coil features: * Works with Sniper EFI for easy plug-and-play installation * Ignition coil connector removes any doubt of loose connections at the ignition coil * Integrated ignition coil bracket simplifies mounting ignition coil
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$61.19
$55.05
Holley Sniper 2 EFI 5 in. digital dash displays come out of the box, ready to plug-and-play with your Sniper 2 EFI ECU. The 5 in. digital touch screen display is pre-loaded with three easy-to-read layouts that provide critical system information, thanks to the provided magnetic GPS antenna. Also included is the same handheld wizard as the 3.5 in., tuning, and data logging, along with two dash mounting stand offs and a suction cup, allowing you to quickly mount the dash to most flat surfaces in the vehicle, without drilling any holes. Additional notes and features: * Compatible only with Sniper EFI 2 Products * Next Generation mil-spec style M8 positive lock connector for easy and secure installation * Built-in Calibration Wizard allows you to quickly build a base engine calibration for your Sniper 2 EFI powered vehicle, without the need of a laptop * Three default background skins pre-loaded with the option to customize the existing layouts to read exactly what information you want to see * Quickly swipe between multiple monitor screens, with customizable parameters (tune, warm-up, race, drive, etc.) * Provides Real-time ECU tuning, allowing you to dial in your AFR, Ignition Timing, or any other handheld tune able value, such as IAC or Acceleration Enrichment * Expandable storage via included micro-SD, allowing quick access to ECU calibrations, datalogs, or any other files you may use with your Holley EFI system * Capacitive touch--no stylus required * Convenient dimming feature for nighttime driving, simply press the Sniper EFI icon on the background to quickly dim or brighten the screen
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$449.95
On Sale
New for the Holley Sniper EFI product line is a factory replacement Sniper EFI canister-style ignition coil. This ignition coil is potted with a premium-grade epoxy, making it perfect for high-vibration environments—and it can be mounted in any direction, even if it's horizontal, vertical, or upside down. "No oil" means "no failure" for multiple mounting positions. The Sniper EFI canister coil is perfect for anyone wanting to upgrade their ignition system, while maintaining a factory look under the hood. Features: * Metal canister is epoxy filled to protect the internal coil windings from high-vibration applications * Improved output coil for electronic ignitions, and MSD ignitions (ballast resistor required for points) * 100:1 turns ratio and lower primary resistance produce high-voltage output
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$63.05
$56.75
On Sale
Holley Terminator X MAX engine management systems let you take control of your domestic V8 engine. They give you complete charge of your engine and self-learning fuel strategies, along with the proven, race-winning technology of Holley EFI—all at a budget-friendly price! Every MPFI Terminator X MAX features real-time fuel learn, high-impedance injector drivers, an integrated one-bar MAP sensor—and four programmable inputs and outputs, ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Also, Holley offers the X MAX systems with either or both drive-by-wire (DBW) throttle body control or transmission control. All kits come fully loaded with base maps for common domestic V8 engine combinations to get you out of the garage and onto the road or track fast. Order the model recommended for your vehicle application. Features include: * Holley EFI industry-leading, easy-to-use software suite allows full laptop access for advanced users * Real-time fuel map learn—takes the guesswork out of tuning your base fuel table * High-impedance injector drivers will safely power most standard injectors and Holley EFI injectors (will not control low-impedance injectors) * Bosch LSU 4.9 wideband relays AFR information to the ECU for accurate reading and precise tuning control * On-board one-bar MAP sensor is perfect for N/A or nitrous engine combos * MAP sensor vacuum hose adapters * 4 inputs: 12 V, ground, 5 V, and frequency * 4 outputs: Ground, PWM, and for accessories * Boost control: boost vs. time, boost vs. gear, boost vs. rpm, boost vs. speed, and boost safeties * Nitrous control: single channel of wet or dry, progressive or non-progressive, rich/lean safeties, and target closed loop AFR; adjustable through touch screen * Advanced tables can be used for any custom tables * On-board diagnostic LEDs allow you to identify any critical engine issues at a glance * The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDs must face up! * Plug-and-play compatible with more Holley EFI accessories * Available with or without a 3.5 in. touch screen LCD hand-held with easy-to-use calibration wizard; allows you to quickly build a base tune for most V8 engines, as well as tuning and gauge display functions
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$2,499.95
$1,609.95
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$3,299.95
On Sale
Holley Terminator X engine management systems let you take control of your domestic V8 engine. These kits give you complete charge of your engine and self-learning fuel strategies, along with the proven, race-winning technology of Holley EFI—all at a budget-friendly price! Every MPFI Terminator X features real-time fuel learn, high impedance injector drivers, an integrated one-bar MAP sensor—and four programmable inputs and outputs, ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. All systems come fully loaded with base maps for common engine combinations to get you out of the garage and onto the road or track fast. Features include: * Holley EFI industry-leading, easy-to-use software suite allows full laptop access for advanced users * Real-time fuel map learn—takes the guesswork out of tuning your base fuel table * High-impedance injector drivers will safely power most standard injectors and Holley EFI injectors. (Will not control low-impedance injectors) * Bosch LSU 4.9 wideband relays AFR information to the ECU for accurate reading and precise tuning control * On-board one-bar MAP sensor is perfect for N/A or nitrous engine combos * MAP sensor vacuum hose adapters * 4 inputs: 12 V, ground, 5 V, and frequency * 4 outputs: Ground, PWM for accessories * Boost control: boost vs. time, boost vs. gear, boost vs. rpm, boost vs. speed, and boost safeties * Nitrous control: single channel of wet or dry, progressive or non-progressive, rich/lean safeties, and target closed loop AFR; adjustable through touch screen * Advanced tables: 4 x 1D tables, 1 x 1D per gear table, 4 x 2D tables, 1 x 2D per gear table * On-board diagnostic LEDs allow you to identify any critical engine issues at a glance * The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDs must face up! * Plug-and-play compatible with more Holley EFI accessories * Available with or without a 3.5 in. touch screen LCD hand-held with easy-to-use calibration wizard; allows you to quickly build a base tune for most domestic V8 engines, as well as tuning and gauge display functions (not available with every kit)
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$1,899.95
$1,213.95
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$2,949.95
On Sale
Direct upgrade for existing HyperSpark ignition box, Holley Sniper EFI HyperSpark 2 CD ignition boxes feature a smaller form factor and hotter spark. These low-profile boxes can fit nearly anywhere inside of your engine bay or cockpit. They have all the proven features of their predecessor in a smaller package, making it easier to mount, providing the cleanest installation possible. HyperSpark 2 ignition boxes pack up to 150 mJ of spark energy when used with the matching ignition coil, resulting in enough energy to safely fire your Sniper EFI engine combination. Features: * Plug-and-play with existing HyperSpark installations, or Sniper EFI HyperSpark main harnesses * Includes an ignition harness for fresh Sniper EFI Installs simply wanting to add timing control * New processor and board design provide a highly efficient ignition, minimal heat, and maximum spark energy with less current draw * High rpm operation and maximum output using the HyperSpark ignition coil * Powerful capacitive discharge of multiple sparks improves performance and ensures complete combustion * Consistently high-spark energy of 135 to 150 mJ for every firing, from idle to redline rpm * Operates on most 7 to 28 V electrical systems * Fully protected against an open coil, shorted coil, and open load * 1.47 lbs. lighter than an original HyperSpark ignition box * Quickens throttle response and improves starting * Tach Output to drive an external tachometer
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$399.95
$359.95
On Sale
Holley Sniper EFI HyperSpark distributor kits were designed to make upgrading your ignition on a Sniper EFI-equipped engine simple. When installed concurrently with a new Sniper EFI system, the combination creates the easiest way to install EFI conversion on the market—and only four flying lead connections are required! The harness only requires one connection to a switched power source, battery positive, battery negative, and fuel pump power. The pre-terminated connectors and a built in 40A relay provides power to all of the components within the system. With the included Sniper EFI main harness you no longer need to run multiple wires to provide switched power for each individual component, which not only helps prevent wiring confusion, but it will also speed up your install time and clean up your engine bay. Simply route the harness and pre-terminated connectors to your HyperSpark coil, distributor, and ignition box and plug them in. Available for all popular engine combinations, these kits come with a distributor, coil, ignition box, and an integrated Sniper EFI harness. Order the application you need. Key features: * Plug-and-Play Sniper EFI main harness replaces the standard Sniper EFI harness with four loose leads, battery positive, battery ground, switched 12 V, and fuel pump power, for a simple and streamline installation * Designed for existing or new Sniper EFI installations (the HyperSpark Master Kit harness retains the same flying lead wire colors as the Sniper EFI main harness; new installations will not use the Sniper EFI standard harness or coil driver * Complete ignition system in a box, including: HyperSpark ignition box, HyperSpark ignition coil, HyperSpark distributor (for your application), and a plug-and-play main harness * HyperSpark distributors feature a Hall Effect crank trigger sensor providing a noise-free rpm signal to the Sniper ECU * Patented clear installation cap eliminates any confusion while installing the distributor * HyperSpark CD ignition box is seal and powder coated to be installed in the harshest of locations * External LED on HyperSpark CD Ignition box helps verify 12 V, cranking rpm, and low battery voltage * 135mJ of spark energy when used with the HyperSpark ignition coil, ensures complete combustion * Integrated ignition coil bracket simplifies mounting the Ignition coil * Ignition coil connector removes any doubt of loose connections at the Ignition coil * Enables timing control on a Sniper EFI Installation
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$999.95
$898.95
On Sale
Holley HP EFI ECU and harness kits allow you to manage automotive functions—like the fuel and ignition of your engine, along with controlling nitrous, boost, or water/methanol. Select the model with options needed for your vehicle application. (Note: some models are engine-specific.) Features and notes: * Eight sequentially driven 8:2 peak and hold injector drivers capable of driving up to 16 low or high-impedance injectors are standard * 8-channel distributorless ignition (DIS) outputs capable of directly driving "smart" ignition coils or Holley DIS coils * Integrated, single-channel wideband oxygen sensor control. Works with NTK or Bosch sensors. More channels can be added via CAN bus. * Internal data-logging is standard, with a huge 2GB of memory * 4-stage progressive nitrous control * Turbo boost control * Integrated water/methanol injection control * Self-tuning fuel table strategy greatly simplifies tuning process * Individual cylinder fuel and spark control allow you to unlock your engine's potential * Compatible with 4, 6, and 8-cylinder engines * Unique lbs./hr.-based fueling strategy greatly simplifies tuning * Advanced idle, closed loop, and enrichment strategies allow for very stable operation * Fully potted and can be mounted in the engine compartment or interior * Sealed automotive and marine-grade connectors * Allows for use of common OEM sensors, as well as customer sensor calibration input * Ignition plug-and-play with GM 24x and 58x LSx engines, GM HEI, Ford TFI, magnetic, and hall effect trigger, and other ignition systems * 1-5 bar MAP sensor capability * 2-channel knock control sensor inputs for both one and 2-wire knock sensors * Dedicated fuel and oil pressure inputs * Control both stepper and PWM idle air control (IAC) motors * Speed density, Alpha-N, or combination fueling strategies * Four programmable high or low pulse width modulated (PWM) outputs and four fully configurable inputs can be configured for use * Lean or rich safety cutoff
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$2,649.95
$1,798.95
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$3,849.95
On Sale
Holley Sniper HyperSpark ready to run small cap distributors adds plug and play ignition timing control to any Holley EFI system. This line of distributors comes with a built-in ignition coil driver, removing the need of mounting an ignition box or external coil driver. The design includes a single Hall Effect sensor providing engine rpm to the ECU. The precision shutter wheel design ensures accurate timing, even at very high engine speeds. They can also be used with other EFI systems that support a Hall Effect crank signal input. Order the model designed for your application needs. Features: * Easiest plug-and-play way to add timing control to any Sniper EFI installation * Designed to work with HyperSpark ignition coil (PN: 556-152); also compatible with most canister ignition coils using the supplied ring terminals * Built-in ignition coil driver, safely provides enough spark energy for applications up to 450 hp * Patented clear installation cap eliminates any confusion while installing the distributor * Cast aluminum distributor housing looks right at home in nearly every engine bay * Comes with cast gear installed—contact camshaft manufacturer for recommended gear material * Comes with steel gear for SBF applications with an aftermarket camshaft * Precision shutter wheel provides the ECU a clean rpm signal via a single Hall Effect sensor, ensuring accurate timing even at high engine rpm * Shutter wheel design allows for a "timed sequential" fueling strategy with Terminator X, HP, and Dominator ECU's * Includes wire retainer for a clean installation
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$549.95
$302.95
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$549.95
On Sale
Holley's EFI crank trigger kits provide accurate crank speed and position signals to Holley EFI systems in the most demanding, high-horsepower, racing applications. The crank position is measured every 10 degrees instead of every 45 degrees, like standard 4-magnet crank trigger systems. Holley's EFI crank trigger kits feature 1/4 in. thick, billet steel, 36-1 or 60-2 tooth-crank trigger wheels with black zinc oxide finish for superior corrosion resistance and striking good looks Other notable features include: * Crank wheels center off of balancer hubs, eliminating the need for centering rings * All billet, 6061-T6 aluminum sensor mounting brackets with "bright-dipped" black anodized finish and laser-etched Holley EFI logo * Custom 3-wire, ferrous-target, Hall-effect sensors with M12 x 1.0mm threads for finer gap adjustment * Grade 8 and mil-spec mounting hardware
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$675.95
$583.95
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$749.95
On Sale
Designed to extend your factory coil harness so you can easily remote-mount your ignition coils, these wire assemblies by Holley provide an ideal solution for cleaning up the look of your engine bay. They provide the means for mounting your ignition coils off the valve covers with their OEM connectors that provide a secure connection between your ECU and coils. Get the customization you want with the Holley ignition coil extension harnesses designed for your application.
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$126.95
$114.25
On Sale
Holley LS extended-length main engine harnesses are 22 in. longer than previous harnesses. Designed to fit most 24x and 58x LS engines from 1997-2012, they are a perfect fit for installers wanting to mount any Holley EFI ECU inside of the passenger compartment where it is away from the elements, and easy to access, such as on a roll bar or under the passenger seat. Notes: * Plug-and-play with Dominator, HP, Terminator X, and Terminator X Max ECUs * LS1/6 harness interfaces with 24x crank and 1x cam sensors * LS2/3/7 harness interfaces with 58x crank and 4x cam sensors
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$672.95
$604.95
On Sale
Holley EFI remote LS coil relocation brackets are available for all existing LS coil models, as well as for Holley EFI SmartCoils. These brackets are fabricated from lightweight aluminum and allows you to discreetly remote mount your LS engine coils at a location of your choice. Each Holley EFI bracket kit was custom designed, based on the specific coil model to ensure that the coils will mount as compactly as possible--size and shape between each kit will vary depending on the coil being used. Features include: * Eliminates OE coil-on-cover clutter * Designed to custom fit all LS ignition coil models * Fabricated from lightweight aluminum * Includes coil mounting hardware * Sold as a pair (coils not included) * Available in black or natural finish
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$177.95
$160.15
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$237.95
Holley EFI sensor blocks provide a clean and safe solution for mounting multiple 1/8 in. NPT pressure sensors. Rigidly mounting pressure transducers to your engine is never a good idea. Holley EFI sensor blocks are a better idea. Features include: * Compatible with all transducers that utilize 1/8 in. NPT male threads and 7/8 in. or smaller body/hex diameter * Four independent ports, each with three inlets/outlets, allows for the remote mounting of transducers which eliminates inaccuracies due to vibration and heat * Improve engine bay organization by mounting transducers all in one easy to reach location * Four mounting holes designed for the use of 5/16 in. socket head cap hardware for secure and robust mounting * Crafted from military grade 2024 aluminum * Optimized design weighing only 0.50 lbs. * Anodized black for durability and laser-etched with the Holley EFI logo
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$65.85
On Sale
A cam sync signal is required to run sequential fuel injection, and Holley camshaft sync kits are ready to set the firing order for top performance. Available in a choice of kits for standard cam height small block and big block Chevys, as well as raised cam height big blocks, these Holley kits fit Jesel and other external, dry timing belt cam drive systems. They provide a plug-and-play cam position signal to Holley EFI systems, but are also compatible with any EFI system which can read a digital, square-wave cam input signal. All of the kits feature unique T-nut and bracket designs that allow for complete sensor adjustment from the outside of the bracket with a single jam nut. Let your ECU know which cylinder is number one in the firing order with a signal from Holley Chevy camshaft sync kits. Holley kits include: * 3-wire H all-effect sensor (8 to 20 V) * Anodized billet aluminum bracket * Mounting hardware * Mating connector * Stainless steel 1/4 in.-20 "flying magnet" screw with a high-temperature, rare-earth magnet
Not Yet Reviewed
$359.95
$314.95
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$368.95
Holley EFI GM Gen V GDI sub harnesses are available for early and late LTx engines. The GM fuel pressure sensor is mounted to the back of the driver-side fuel rail and is the identifier of each engine. Depending on which one your engine has will determine which Holley EFI GM Gen V GDI sub harness is required. Late engines use a 3-pin, and the early engines use a 4-pin fuel pressure sensor. Choose the appropriate sub harness for your engine.
Not Yet Reviewed
$149.95
Holley wiper switches are 5-blade, 2-speed units with an internal 6-amp circuit breaker at 12 V DC. They feature a black with white imprint plastic knob with metal insert. Additional features and specs: * Electric 2-speed wiper switch with push-to-wash * Plated steel case 1 3/8 in. (34.9mm) diameter, 3/8 in. (9.5mm) long * Mounting stem 7/16 in.-28 thread, .38 in. (9.6mm) long
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$49.95
One of the challenges with a Gen III Hemi swap is alternator clearance. The Holley Gen III Hemi alternator with relocation kit is the solution. These kits come complete with everything you need to move the alternator to a more ideal location to provide additional clearance to the frame on the passenger side of the engine. The kits include the mounting bracket, pulley, alternator and hardware for installation. The alternator is smaller and more compact, further helping clearance issues, making them easy to wire. The steel relocation bracket is black powdercoated for extra rigidity and corrosion-resistance. Make your Gen III Hemi swap easy with one of these Holley kits.
Not Yet Reviewed
$749.95
On Sale
Holley USB cables are sealed against dirty environments. These connector cables are designed to fit select Holley EFI systems. If your system's ECU is mounted in not-so-clean areas, use Holley sealed USB cables.
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$131.95
Holley Single-Channel EGT controllers are designed for use with a K-type thermocouple using a "mini-K" connector. The module's accurate temperature measurement range is 32-2,282 degrees F (0-1250 C), with an accuracy of +/- 5 degrees F. The module is available in two versions: either CAN 1CH EGT, which is a plug-and-play installation for compatibility with Holley EFI products, such as HP and Dominator EFI systems; or Analog module, 1CH EGT with a "flying lead" with three wires exposed for power, ground, and signal for non-Holley EFI installations. Order the EGT controller suited to your application needs. Plug-and-Play, 1CH EGT controller features: * Supplied harness features two CAN connectors (one male, one female) that plug into the Holley main harness (or P/N: 558-412 kit Dominator only) * LED: Green LED indicator on unit shows solid green color to signify device is operational; flashing LED alerts no thermocouple connected or it failed * Note: before mounting, it is recommended you record the CAN ID Serial number from the sticker on bottom side of the unit for use during software setup * Mounting: EGT module is designed to be installed with zip-tie or a pair of #6 or #8 screws * Software setup * Important note: Requires software and firmware Version 5 Build 31 or later Analog module, 1CH EGT controller features: * Wiring: harness is a "flying lead" with three wires exposed for power, ground, and signal (red wire: power 6.5 V-24.0 V; black wire: ground; and tan wire: Analog output) * Outputs a 0-5 V and can be used with systems that have configurable 5 V inputs * LED: Green LED indicator on unit shows solid green color to signify device is operational; flashing LED alerts thermocouple not connected or it failed * EGT module is designed to be installed with zip-tie or a pair of #6 or #8 screws * Analog setup: analog output scaling is accurate between 0.5 and 4.5 V and covers temperature range of a K-type thermocouple
Not Yet Reviewed
$182.65
The factory alternator on the 2020 and up Ford 7.3 L Godzilla engine is a bulky single or dual alternator design that is tough to package in an engine swap. The Holley Ford 7.3L Godzilla alternator kits provide a more compact solution for extra clearance and works with the factory timing cover, water pump, damper/crank pulley, and intake manifold. They also will work with after-market damper/crank pulley. The bracket and alternator are compact and lightweight, and the Holley alternator is easy to wire and does not require the factory ECU to function like the OE alternator. Holley includes the plug/pigtail, pulleys, and belt in a complete kit. Please note the included belt is for alternator-only applications, but the instructions specify the belt for other configurations. The bracket allows for any accessory configuration, and it works with or without the air conditioning compressor and with or without a power steering pump. Features and details: * Alternator kit and mounting bracket for Ford Godzilla 7.3-liter engine swaps * Great solution with everything needed to add an alternator to the Ford 7.3-liter crate engine * Eliminates bulky dual alternator system—factory setup on some heavy-duty trucks * Works with the factory timing cover, water pump, damper/crank pulley, and intake manifold—also works with after-market damper/crank pulley * Compact design with alternator pulled in tight to the engine for extra clearance under the hood * The mounting bracket is compatible with Holley alternator models: PN: 197-300, 197-301, 197-302, and 197-303 * Easy wiring of alternator and does not require factory ECU to excite alternator—wiring pigtail included * Choose from a complete kit with 105-amp Holley alternator (PN: 20-380), or bracket kit (PN: 97-409) * Natural as cast finish on the mounting bracket and alternator * Works with or without an air conditioning compressor * Works with or without a power steering pump * For alternator-only race setup, Holley bracket PN: 97-409 should be used with Holley premium alternator (PN: 197-302 or 197-303)—ideal for high rpm applications (alternator designed and tested for up to 30 percent higher rpm) * Ideal for use on Godzilla crate engines and engine swaps
Not Yet Reviewed
$449.95
Holley drive-by-wire accelerator pedals perfect complements to any vehicle using DBW. They offer plug-and-play compatibility with Holley EFI and simply bolt into the stock locations when used with Holley's DBW pedal brackets (sold separately). Features: * Simplifies engine swaps with DBW accelerator systems * Works great with Holley EFI installation * Provides modern look and performance for classic vehicles * Fits in OE location when used with Holley DBW pedal brackets
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$149.95
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