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On Sale
Holley Nitrous Solenoid Drivers
Holley nitrous solenoid drivers offer high-current performance. These Holley EFI accessories are required when progressively controlling nitrous oxide solenoids. You can use non-progressive nitrous to replace a standard relay. Improve your solenoid activity with Holley nitrous solenoid drivers.
( 6 )
$140.95
$126.85
On Sale
Holley EFI Gauge Modules
One Holley EFI gauge module is required per set of CAN gauges. These plug-and-play gauge modules feature a stereo-style connector and pre-pinned ECU wire.
( 4 )
$152.95
$137.65
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.
( 2 )
$275.95
$248.35
Holley Replacement Idle Air Control Motors
Holley replacement idle air control motors will fit your Holley and Sniper fuel injection systems without any modifications. Designed to be plug-and-play for easy replacement and like-new operation. Order the correct valve for your application today.
( 26 )
$101.95
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 )
$186.95
$168.25
On Sale
Holley EFI Dominator Transmission Harnesses
Holley EFI Dominator transmission harnesses provide control of your Tremec. The harnesses are terminated for VSS, reverse lockout, and reverse lights. Choose the one designed for your build.
( 1 )
$233.95
$210.55
On Sale
Holley Sniper Replacement Terminator X Bluetooth Modules
Unlock the full potential of your Terminator X EFI system with a Holley Sniper replacement Terminator X Bluetooth module—the ultimate tool for wireless tuning and real-time engine monitoring. This advanced module connects via Bluetooth, allowing you to adjust and optimize your engine directly from your iOS or Android smartphone (tablets not supported at this time). Use by itself or in conjunction with Holley's suite of dashes. Additional details: * Wireless connection to your Terminator X or X Max ECU with a plug-and-play Bluetooth module * Compatible with iOS or Android-based smartphones for complete control of your Terminator X EFI system * Built-in Terminator X EFI Wizard, basic tuning, advanced tuning, and input/output control, as well as customizable data monitor * Quickly make basic or advanced tuning adjustments, change rev limiter RPM, or adjust idle settings without firing up a laptop * Customizable live dash display mode turns your phone into a digital dash, utilizing your phone's accelerometer to display vehicle speed * Mizu style CANbus connector makes installation easy and secure * Explore Holley EFI parts to upgrade your ride or easily access technical documents and installation articles for immediate assistance
( 5 )
$229.95
$206.95
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.
( 40 )
$255.95
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$273.95
$230.35
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$246.55
On Sale
Holley Sniper 2 EFI Throttle Body System CAN Hubs
Holley Sniper 2 EFI throttle body system CAN hubs are cutting edge connectivity solutions designed to enhance your Sniper 2 EFI system's performance and monitoring capabilities. Featuring a high-speed USB laptop connector, each hub facilitates seamless tuning, configuration, and real-time data logging. Included is one M8 Sniper ECU connector for a robust and reliable connection to your engine control unit and three M8 display connectors, allowing for multiple displays to monitor critical engine metrics simultaneously. A USB-C is also included. Holley Sniper 2 EFI system CAN hubs feature a compact and durable design, ensuring they withstand harsh automotive environments, while fitting neatly within your vehicle's engine bay or dashboard. Additional features and benefits: * Enhanced visibility -- Monitor your engine's health and performance easily with multiple display support * Stable and reliable connection -- Direct integration with Sniper ECU ensures a stable and reliable connection * Easy installation -- Plug-and-play connectivity and user-friendly installation for those with limited technical expertise * Multiple display support -- Connect up to three displays simultaneously for a comprehensive view of critical performance metrics
( 2 )
$142.95
$128.65
On Sale
Holley Sniper EFI Fuel Regulators
Holley Sniper EFI universal bypass fuel regulators are for use with fuel systems in street or track applications. They feature adjustable base pressure from 40-130 psi, a gauge port, and a boost reference port. These regulators are ideal for vehicles/systems where superior flow and pressure control are needed. Each unit is precision-machined from 6061-T6 billet aluminum for strength and durability—and features a black, bright dip anodized body and clear bright dip anodized top for corrosion resistance and good looks. Choose from -6 or -8 AN inlet/outlet return fitting sizes. Product features: * Longer spring for wider range of adjustment (40-130 psi) * Oversized bypass orifice and corrugated diaphragm for superior flow * Constructed of billet aluminum with a black anodized base and top for good looks * Offered in -6 and -8 ORB configurations * Used in systems with a return line back to tank * 1/8 in.-NPT boost reference port (ratio 1:1) * 1/8 in.-NPT fuel gauge port * Alcohol fuel and race gas compatible * Includes mounting bracket, hardware, and an 1/8 in.-NPT barb fitting for manifold reference
( 1 )
$192.95
$173.65
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$181.95
On Sale
Holley EFI Billet Bypass Fuel Pressure Regulator KIts
Holley EFI universal bypass fuel pressure regulators are for use with fuel systems in street or track applications. They feature adjustable base pressure from 15-90 psi, a gauge port, and a boost reference port, as well. The regulators are ideal for vehicles/systems where superior flow and pressure control are desired. These regulators are precision-machined from 6061-T6 billet aluminum for strength and durability—and feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. Choose from models with -6 AN or -8 AN inlet/outlet port sizes. * Kits include a Holley fuel pressure gauge * Regulator features an 1/8 in. NPT gauge port and 1/8 in. NPT boost reference port (barbed fitting included) * Mounting bracket and fittings included
( 1 )
$232.95
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$241.95
$209.65
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$217.75
On Sale
Holley Hemi V8 Ignition Coil Adapter Harnesses
Holley Hemi V8 ignition coil adapter harnesses let you take charge of your engine by controlling both fuel and spark. They are built to fit and function with the factory harness. The harnesses feature TXL-grade copper wiring with minimal weight, plus high-temperature sleeves in a small diameter. Factory-style terminations provide a strong, secure connection.
( 1 )
$204.95
$184.45
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$191.95
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.
( 1 )
$224.95
$202.45
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$236.95
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.
( 75 )
$274.95
$120.61
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$247.45
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
( 32 )
$119.95
$107.95
On Sale
Holley EFI Fuel Pulse Dampers
Holley EFI fuel pulse dampers act in tandem with the fuel pressure regulator to further control the fuel pressure in an EFI system. They act to smooth out the pressure pulsations caused by the injectors opening and closing as well as the fuel pump operating. These pulsations happen so quickly that in many cases they can't be identified with an analog gauge but can cause issues with fuel delivery to the engine. Options include: * Direct-mount or inline mount * Multiple inlet/outlet dimensions * Standard or extended fuel pressure range * Male or female threads 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/regulators and direct-mount dampers * 1/8 in. NPT port on body of damper/regulators and inline dampers for easy installation of mechanical pressure gauge or pressure transducer * Vacuum fitting and one foot of hose included with all dampers for vacuum referencing
( 6 )
$108.95
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$157.95
On Sale
Holley EFI Gen III Hemi VVT and SRV Harnesses
Holley EFI Gen III Hemi VVT and SRV harnesses offer control. 2009+ Gen III Hemi engines rolled off the showroom floor with Variable Valve Timing (VVT). Now, both Holley Terminator X and Terminator X Max ECUs will allow you to control and tune the VVT with the use of the plug-and-play VVT harness. But the fun does not stop there! If you are using a stock intake manifold that came from the factory with the Short Runner Valve (SRV), Holley also has a plug-and-play sub harness that will allow you to utilize the SRV actuator and capitalize on its low rpm torque benefits. Features: * Plug-and-play with the factory Gen III HEMI VVT sub-harness, and any Holley EFI HEMI main harness connecting to the power tap and input/output connectors * Provides control of VVT solenoid under the intake manifold * SRV (Short runner valve) connector pre-wired into the sub harness allowing you to simply plug into the factory SRV actuator in the intake manifold
Not Yet Reviewed
$167.95
$151.15
On Sale
Holley Sniper 2 EFI Bluetooth Modules
Holley Sniper 2 EFI Bluetooth modules, the cutting-edge solutions designed to take your vehicle's performance to the next level, provide unparalleled control and customization for your engine. Being able to wirelessly connect to your vehicle's EFI system using Bluetooth technology allows the convenience of adjusting and optimizing your engine parameters directly from your iOS or Android-based smartphone. Stay informed about your engine's performance with real-time monitoring, and receive instant updates on crucial metrics, such as fuel injection, air-fuel ratio, ignition timing, and more. Sniper 2 EFI Bluetooth modules empower you to fine-tune your engine parameters to match your specific driving preferences and performance requirements. The intuitive and user-friendly interface of the accompanying Sniper EFI mobile app makes tuning your Sniper 2 EFI system a breeze. Whether you're a seasoned automotive enthusiast or a novice, the Sniper 2 EFI Bluetooth modules ensure a seamless tuning experience for all users. Achieve the perfect balance between power, fuel efficiency, and responsiveness. Features: * Built in Sniper EFI Wizard, basic tuning, advanced tuning, and input/output control, as well as customizable data monitor * Quickly make basic, or advanced tuning adjustments, change rev limiter RPM, or adjust idle settings without firing up a laptop * Explore Sniper EFI ecosystem parts to upgrade your ride, or easily access technical documents and installation articles for immediate assistance * Next generation mil-spec-style M8 positive lock connector makes installation easy and secure
( 2 )
$228.95
$206.05
Holley EFI Gen III Hemi VVT Harnesses
2009+ Gen III Hemi engines rolled off the showroom floor with Variable Valve Timing (VVT). Both the Terminator X and Terminator X Max ECUs will allow you to control and tune the VVT with the use of Holley EFI Gen III Hemi VVT harnesses. These plug-and-play harnesses (to the factory sub-harness) provide control of VVT solenoid under the intake manifold.
Not Yet Reviewed
$128.95
On Sale
Holley HP Billet Fuel Pressure Regulators
Part of Holley's complete line of fuel system products, Holley HP billet fuel pressure regulators are available in a variety of configurations for carbureted or fuel injected engines. Some versions are even adaptable to either carburetors or EFI. They allow you to upgrade a carbureted system to EFI without replacing the fuel pressure regulator. All HP billet fuel pressure regulators feature a 2-port design, provide for precise fuel pressure adjustments, and are available in your choice of demand (no return line) or by-pass (with a return line) styles. Depending on the model, they are for use only with electric fuel pumps, or with either mechanical or electric pumps. Designed for street/strip applications, they are CNC-machined from 6061 T-6 billet aluminum for strength and have bright dip anodized black bodies with clear dip anodized tops for corrosion resistance and good looks. Whatever your fuel system needs, Holley has you covered. Depending on model, features may include: * Adjustable from 4 to 65 psi for use with EFI or carburetors * 4.5 to 9 psi adjustment range for use with carburetors only * EFI-only models are adjustable from 15 to 65 psi * Two port sizes available, 3/8 in. NPT or -6 AN inlet/outlet and return (where applicable) * Fitting for manifold reference * 1/8 in. NPT gauge port * Boost reference--1:1
( 165 )
$193.95
$174.55
