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On Sale
Holley Boost Control Solenoids
Holley boost control solenoids are designed for optimal performance when using the boost control function of Holley EFI. Some setups require two solenoids and some require one. They're driven by a Pulse Width Modulated (PWM) output of the ECU. It is advised NOT to use the PWM+ outputs on a Holley HP ECU, but rather use the PWM- outputs. If you have a Holley Dominator ECU, use either the PWM- outputs or a PWM+ output on the J2B connector.
( 4 )
$460.95
$413.95
On Sale
Holley Sniper 3.5 in. LCD Touch Screen Controller
The Holley Sniper 3.5 in. LCD touch screen controller gives you access to a wide range of tuning options. These hand-held controllers can be used as a fully customizable data monitor—and with the unit's 3.5 in. display, your Sniper EFI system vitals can be viewed at a quick glance! Features and benefits include: * Full color, backlit 3.5 in. touch screen LCD * Laptop-free tuning changes to help optimize mileage, drivability, and performance * Basic tuning options allow simple adjustments of basic fuel, fuel learn, basic idle, spark, and more * System tuning options allow modifications to outputs, engine setup, ignition setup * Advanced tuning options allow fine-tuning of fuel, closed loop, learn, and idle—including IAC parameters and idle spark * Monitor a vast number of parameters in pre-configured, multi-gauge, and monitor screens—or customize your own * Set up ECU data-logging, download data-logs to SD card, upload and download global folders via SD card, update ECU firmware, and adjust rev limiters 1 and 2 * Includes 3.5 in. touch screen, mounting sleeve, power and extension harness, and SD card
( 11 )
$399.95
$359.95
On Sale
Holley Terminator X 3.5 in. Handheld Controllers
With Holley Terminator X 3.5 in. handheld controllers, your system vitals can be viewed with a quick glance. The full color, backlit LCD touch screen provides access to a wide range of tuning options and can also be used as a fully customizable data monitor. Holley Terminator X 3.5 in. handheld controllers include mounting sleeve, power and extension harness, SD card, and user manual CD. Features: * Laptop-free tuning changes to help optimize mileage, drivability, and performance * Basic tuning options allow simple adjustments of Basic Fuel, Fuel Learn, Basic Idle, Spark, and more * System tuning options allow modifications to Outputs, Engine Setup, Ignition Setup * Advanced tuning options allow fine tuning of Fuel, Closed Loop, Learn, and Idle (including IAC parameters and Idle Spark) * Monitor a vast number of parameters in pre-configured Multi-Gauge and Monitor Screens, or customize your own * Set up ECU datalogging, download datalogs to SD card, upload and download global folders via SD card, update ECU firmware, and adjust rev limiters 1 and 2
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$357.95
$322.15
On Sale
Holley Sniper 2 EFI 3.5 in. LCD Touch Screen Controllers
Holley Sniper 2 EFI 3.5 in. LCD touch screen controllers give you access to a wide range of tuning options. These hand-held controls can be used as a fully customizable data monitor—and with the unit's 3 1/2 in. display, your Sniper EFI system vitals can be viewed at a quick glance! Monitor a vast number of parameters in pre-configured, multi-gauge, and monitor screens—or customize your own with Holley Sniper 2 EFI 3.5 in. LCD touch screen controllers. Features and benefits include: * Full-color, backlit 3 1/2 in. touch-screen LCD * Laptop-free tuning changes to help optimize mileage, drivability, and performance * Basic tuning options allow simple adjustments of basic fuel, fuel learn, basic idle, spark, and more * System tuning options allow modifications to outputs, engine setup, and ignition setup * Advanced tuning options allow fine-tuning of fuel, closed loop, learn, and idle—including IAC parameters and idle spark * Set up ECU data-logging, download data-logs, or upload and download global folders with the SD card, update ECU firmware, and adjust rev limiters 1 and 2 * Includes the touch screen controller, mounting sleeve, power and extension harness, and SD card * Screen dimensions – 3.350 in. wide x 2.850 in. tall x 0.700 in. thick * Sleeve dimensions – 3.625 in. wide x 2.925 in. tall x 1.000 in. thick
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$286.95
$258.25
On Sale
Holley Sniper Transmission Controller Harnesses
Holley Sniper offers transmission-specific controller harnesses for a variety of GM and Ford automatic transmission models. The plug-and-play harnesses are pre-terminated with j4 connectors. Order the harness recommended for your EFI application.
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$306.95
$276.25
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$299.95
On Sale
Holley EFI Dual-Sync Distributors
Precise timing control—Holley EFI dual-sync distributors are built with two Hall effect sensors for crankshaft and camshaft signals. The distributors can be used as just a crankshaft speed input or provide a camshaft sync signal for sequential fueling operation. They're also useful for crank and cam signals when running coil-on-plug applications. Dozens of models are available; order the one recommended for your vehicle/engine application. Some features of Holley EFI dual-sync distributors include: * CNC-machined billet aluminum housings with integrated LEDs for easy setup * Hardened steel distributor gear * Precision-machined shutter wheels that ensure accurate timing—even at very high RPM * Designed to be plug-and-play with Holley systems, but may be used with other EFI systems that support Hall effect crankshaft and camshaft sensors * Housings are available in a variety of finishes
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$499.95
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$549.95
$281.55
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$493.95
On Sale
Holley Terminator X Max Chrysler Transmission Wiring Harnesses
Control select Hemi swap project transmissions through Terminator X MAX ECUs with Holley Chrysler transmission wiring harnesses. Terminator X ECUs give you unprecedented control of various components and systems within the drivetrain for enhanced driving performance. And Holley Chrysler transmission wiring harnesses provide plug-and-play compatibility with most factory connectors on select Chrysler transmissions for easier project completion.
Not Yet Reviewed
$281.95
$253.75
On Sale
Holley Sniper EFI HyperSpark 2 CD Ignition Boxes
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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$409.95
$367.95
On Sale
Holley Sniper In-Tank Retrofit Fuel Pump Modules
Holley Sniper in-tank retrofit fuel pump modules offer the easiest way to convert your vehicle to an in-tank EFI fuel system. Available in return and returnless versions, these 340 lph pumps are easy to install with basic hand tools and require no welding or fabrication. They include a diecast pump hanger bracket to control pump vibration in a low-profile design that's perfect wherever space is at a premium. You can locate the module beside your existing sending unit anywhere in the tank and rotate it a full 360 degrees to work flawlessly with various plumbing and wiring configurations. Once the module is installed, all you need to do is connect your power source/ground and fuel lines. Up your fuel game with an assist from the Holley Sniper in-tank retrofit fuel pump modules best suited for your application. Features and specs include: * Models available for various fuel tank depths, including adjustable (7-12 in.) versions * The low-profile design is only 1.275 in. thick above the tank mounting surface for added clearance when needed * The innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit and rotate the unit 360 degrees for easier clocking of the plumbing and wiring locations * Diecast aluminum construction for corrosion resistance and long-lasting good looks
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$530.95
$322.15
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$476.95
On Sale
Holley EFI CAN Input/Output Modules Kits
The Holley EFI CAN Input/Output Module kit can be added to Holley EFI HP, Dominator, Terminator X and Terminator X Max EFI installation. This CAN module will add eight inputs and eight outputs to the system, which can be used to control additional accessories or provide critical sensor inputs. This module is perfect for anyone wanting to enhance the capabilities of their current ECU, yet have already tapped out their ECU's Input/Output channels. Product features: * Quickly expand your HP/Terminator X or even Dominator ECU's Input/Output control with 8 additional inputs and outputs * This module is perfect for anyone wanting their Holley EFI ECU to control more functions or monitor more data channels * HP and Terminator X EFI installations with only 4 inputs and 4 outputs can now add more functionality to their EFI system * The 554-165 kits contain a pre-terminated CAN harness, allowing you to quickly install the Holley EFI CAN Module to any existing Holley EFI installation * Pre-terminated flying leads makes installing new wires a breeze * Inputs can be used for things such as: - Switch 12 V toggle switches; can be configured for external mechanical relays, or setup as digital switches via a Holley EFI dash - Ground input for brake pedal switch - 5 V analog inputs for sensors like fuel pressure, oil pressure, or nitrous bottle pressure - Thermistor inputs for coolant temperature sensors * Outputs can be used for things such as: - Switch Low (ground); for relay control or activation - Switch Low PWM (ground); PWM fan control, PWM fuel pump control, or other PWM-controlled devices * Adjustable broadcast rate for each channel: from 0-100hz
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$499.95
$409.95
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$448.95
On Sale
Holley EFI Terminator X Fuel Injectors
Holley EFI Terminator X fuel injectors feature a precision lapped disc valve, high-quality brass windings, and high-temperature O-rings. These injectors provide excellent linearity with no discernible "bounce" at low pulse widths as commonly found in other injectors. With a wide variety of fuel flow offerings from 42 lb./hr. to 220 lb./hr. you are sure to find an injector that matches your non-emissions-controlled application. Holley EFI Terminator X fuel injectors can also be used with any ECU that utilize high-impedance fuel injector drivers. Features: * PICO/EV6-style performance injectors are sold individually or in a set of 8 * High impedance for use with saturated drivers * Rated injector flow 220 lb./hr. at 43 psi of base fuel pressure * USCAR injector connector * 40mm O-ring to O-ring length * Compatible with many OEM LS intake manifolds * Easy to install in any Holley EFI Hi-Ram intake, using Holley fuel rail adapter kit
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$486.95
$437.95
On Sale
Holley Sniper EFI HyperSpark Distributors
Do you need to upgrade your ignition system due to a recent Sniper EFI installation, but have no idea which option is best? Introducing Holley Sniper EFI HyperSpark distributors. These billet distributors use a hall-effect crank signal sensor, providing a noise-free RPM signal to the Sniper ECU. HyperSpark distributors include a patented clear installation cap that eliminates any confusion when installing the distributor. They're an easy plug-and play solution to add timing control and complete your Sniper EFI installation. Many options are available; choose the model recommended for your year/make and engine application.
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$460.95
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$511.95
$413.95
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$459.95
On Sale
Holley Sniper HyperSpark Ready to Run Small Cap Distributors
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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$511.95
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$549.95
$310.11
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$459.95
On Sale
Holley Diecast In-Tank Retrofit Fuel Pump Modules
Holley diecast in-tank retrofit fuel pump modules are quick and easy ways to convert your factory tank or fuel cell into an EFI in-tank fuel system, while also adding the benefits of a Holley HydraMat in the process! The conversion is easily accomplished with basic tools and requires no welding or fabrication. The aluminum module design includes a diecast pump hanger bracket to control pump vibration, while also providing a low-profile design to fit where space is at a premium. Holley's innovative clamping system and integrated fuel pump makes it a simple install. Interested in an EFI retrofit kit, but can't get past the complicated fuel system? Holley diecast in-tank retrofit fuel pump modules are your solution. They're available in various flow rates, as well as return and returnless versions. Features include: * Installs in any fuel tank from 6.5 in. to 12 in. deep (depending on kit) to fit a wide variety of applications * The low-profile design is only 1.275 in. above the tank mounting surface for added clearance when needed * The innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit * The clamping system allows you to rotate the unit 360 degrees for easier clocking of the plumbing and wiring locations under your ride * Includes innovative Holley HydraMat to ensure consistent fuel supply. The 3 in. x 15 in. HydraMat mounting flange has six clocking pin locations to allow for 360 degrees of adjustment to clear sending unit levels or any tank floor restrictions that you might encounter * Diecast aluminum construction for corrosion resistance and long-lasting good looks * 1/4 in. NPT ports for a wide variety of plumbing options * Ideal for Terminator EFI, Sniper EFI, MSD Atomic EFI, or any TBI or EFI conversion * Two different fuel pumps are available—255 lph or 400 lph for both return and returnless-style systems
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$409.95
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$536.95
$367.95
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$482.95
On Sale
Holley Sniper Throttle Bodies
With Holley Sniper throttle bodies, Holley engineers went back to the drawing board to build the ultimate air valve for your engine! They feature enlarged bore sizes, allowing for increased airflow to support your higher horsepower needs. A progressive throttle pulley enhances low-speed drivability, and a double return spring provides solid and secure throttle control feel. These units are maximized for your application, with a 4-bolt style mounting pattern; most models include bolts and gaskets. Order the throttle body designed for fitment with your year/make and engine family.
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$327.95
$278.95
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$374.95
Holley EFI Water and Methanol Injection Solenoids
Holley EFI water and methanol injection solenoids, when used with their other water/meth injection components take your forced induction ride to the next level. Integrated into the Holley HP and Dominator EFI Systems is the capability to control water/methanol injection, allowing you to safely run on lower octane pump gas! These solenoids are run by an injector driver output and are compatible with a water/methanol mix of up to 50 percent methanol.
Not Yet Reviewed
$460.95
Holley Ford Coyote TI-VCT Sub Harnesses
Holley EFI Ford Coyote Ti-VCT sub harnesses interface a Holley EFI ECU to a Ford Coyote engine that will utilize a Holley Twin Independent Variable Cam Timing (Ti-VCT) controller. Together along with the Coyote main harness (not included), you'll be able to unlock the full potential of your high-revving power plant. These plug-and-play sub harnesses are designed specifically for Coyote engines.
Not Yet Reviewed
$278.95
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$409.95
On Sale
Holley Carburetor Main Bodies
Want to upgrade your street carburetor to a high performance race carb, but don't have the means to do a complete carb swap? If you can turn a screwdriver, you can get 25 to 50 hp from these Holley carburetor main bodies. With no air horn, choke tower, or choke control to restrict airflow, they deliver extra power easily and affordably. These main bodies are available in a standard dichromate or shiny finish.
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$279.95
$251.95
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$381.95
Holley Drive-By-Wire Dual Throttle Body Harnesses
Holley Drive-By-Wire (DBW) dual throttle body harnesses are for use with the Dominator EFI ECU, which has built-in capability to control OEM-type DBW throttle pedals and throttle bodies for aftermarket installation. These plug-and-play harnesses are available for the most popular engine swaps. Order the throttle body harness designed to fit your application. Wiring harness features: * Harnesses are available to connect to a late model HEMI engine for the most advanced fuel and timing controls available * Each harness is designed in fit and function specifically for Gen III HEMI engine platforms * All wiring is TXL-grade copper wiring with minimal weight; high-temp sleeve in a smaller diameter * Factory-style terminations provide a strong, secure connection * Connectors are OEM-grade for a correct, positive fit * Each harness is routed through a split-loom braid for protection and great looks
Not Yet Reviewed
$377.95
On Sale
Holley Ford Modular Ignition Coil Harnesses
Holley products deliver the edge you need over the competition. Their Ford modular ignition coil harnesses offer true plug-and-play performance by using OE-style connectors to hook up to your factory coil packs, sensors, or control unit without any modifications. Among other functions, fully connected ECUs allow you to precisely regulate the fuel and ignition of your engine. These Holley complete harnesses enable applications with a single power adder to accommodate a greater number of controls. Order the model designed for your vehicle/engine.
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$255.95
Holley Fuel Pressure Regulators with Pulse Damper
Holley fuel pressure regulators with a pulse damper offer several benefits for performance and reliability. Fuel pulse dampers are designed to act in tandem with the fuel pressure regulator to further control the fuel pressure in an EFI system. These devices help stabilize fuel pressure by absorbing the pressure fluctuations (pulsations) caused by injectors opening and closing, and by the fuel pump. This leads to smoother fuel delivery, improved engine performance, and can help prevent lean spots that can cause stumbling or hesitation, especially during acceleration. Features: * Engineered to stabilize pressure pulsations caused by the injectors opening, ideal for applications with large fuel injectors and high-volume fuel pumps * Compatible with any fuel—full anodized billet aluminum construction with stainless steel springs and Fluorosilicone diaphragm * Fittings included for damper/regulator's and direct mount dampers * 1/8 in. NPT port on body for easy installation of mechanical pressure gauge or pressure transducer/ * Vacuum fitting and one foot of hose included with all dampers for vacuum referencing
Not Yet Reviewed
$327.95
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$357.95
Holley Commander 950 Wideband Replacement O2 Sensors
Holley Commander 950 wideband replacement O2 sensors are the ultimate additions to any new or existing Commander 950 EFI system. They plug directly into any Commander 950 harnesses and accurately measure any air/fuel ratios between 10:1 and 20:1. This allows the engine tuner to read the air/fuel ratios in real time for extremely precise tuning. These sensors are designed for use with Holley controllers only. They are not intended to be replacement sensors for factory fuel injected vehicles.
Not Yet Reviewed
$377.95
Holley EFI Single-Channel EGT Kits
Introducing the Holley EFI Single-Channel EGT kits! They keep you in-the-know about what's going on with your engine. Exhaust gas temperature data is critical information when your engine tune-up seems to be on the ragged edge. Knowing the exhaust temp can help you identify potential horsepower left on the table, or pinpoint any weak links in your max effort race engine. Holley offers these EFI Single-Channel EGT kits for non-Holley applications, as well as compatibility with HP Tuners, Dominator EFI, and Terminator X. Order the Holley EFI Single-Channel EGT kit to meet your application needs. Kit features, specs, and parts may include: * Single-Channel CANbus EGT controller module for quick and easy installation with Holley EFI—or Single-Channel Analog EGT controller with unterminated output wires for universal installations (please specify when placing order) * High-quality 1/4 in. stainless steel EGT weld bung * Robust 1/4 in. probe designed to withstand extreme cylinder pressures * Sensor (included) is designed to work with any engine combination, with an open reinforced tip for the fastest response rate and improved shielding
Not Yet Reviewed
$319.95
On Sale
Holley GM Transmission Wiring Harnesses
Holley GM transmission wiring harnesses are designed to work in conjunction with Holley Dominator EFI fuel injection systems. These application-specific complete terminated harnesses come with a J4 connector to operate General Motors electronic transmissions. For all of your transmission management systems and accessory needs, go with Holley.
Not Yet Reviewed
$286.95
$258.25
