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On Sale
Holley Mid-Mount Complete Accessory Systems
Holley Mid-Mount complete accessory systems achieve what no other accessory bracket systems do--eliminate the brackets! This pulls in all the accessories tighter than other accessory drives by bolting directly to other components for a clean, integrated form. They offer superb engine visibility to show off your horsepower, not your accessories. Holley Mid-Mount complete accessory systems are available in several versions and finishes to match your application. Order the kit designed to fit your engine.
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$2,202.95
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$4,714.95
$1,981.95
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$4,242.95
On Sale
Holley Terminator X MAX Engine Management Systems
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
( 90 )
$1,849.95
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$2,559.95
$1,663.95
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$2,302.95
On Sale
Holley Terminator X Engine Management Systems
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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$1,399.95
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$1,949.95
$1,258.95
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$1,753.95
On Sale
Holley Aluminum LS Valve Covers
Holley aluminum LS valve covers will give your Chevrolet LS Series engines a totally new look. Manufactured from cast aluminum, they come in four different finishes, and feature a billet aluminum oil fill cap. Some valve covers in this series eliminate the need for the factory ignition coil bracket. Instead, the coils bolt directly to the valve covers for a nice angled look! Holley aluminum LS valve covers reuse the factory gaskets and bolts, will work with .750 in. lift camshafts using stock-style rocker arms, and fit all ignition coils with 72mm spacing.
( 146 )
$292.95
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$799.95
$260.10
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$718.95
On Sale
Holley LS Coil Harnesses
Holley LS coil harnesses are factory replacements for stock LS coils. These EFI LS coil sub harnesses are intended to be used with factory LS coils and various Holley EFI main harnesses with coil-on-plug connectors. They are built with the same high-quality connectors and wire loom found on all Holley EFI harnesses, guaranteeing a perfect match in your engine bay. Are you tired of scouring the junkyard for stock LS coil sub harnesses? Holley has the solution. Holley LS coil harnesses feature: * OEM connectors provide a secure connection between your ECU and Ignition Coils * Techflex F6 braided wire loom keeps your engine bay looking clean, while providing abrasion resistance * Plug-and-play fitment * Can be used to replace a damaged factory coil harness
( 18 )
$204.95
$184.45
On Sale
Holley EFI LS Hi-Ram Intake Manifolds
Holley EFI LS Hi-Ram intake manifolds are designed for your high performance race engine. Big cube and high-rev applications without height limitations are the intent for these manifolds. The modular design of these Holley Hi-Ram intake manifolds offers a runner length and as-cast tapered cross-section design that works for a wide range of engine configurations. The included fuel rails are machined for -8 AN O-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system. Build maximum performance with EFI LS Hi-Ram intake manifolds from Holley.
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$1,177.95
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$1,349.95
$1,059.95
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$1,213.95
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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$255.95
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$349.95
$197.36
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$295.15
On Sale
Holley EFI Systems Wiring Harnesses
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 ensure better reliability and performance for your ride--and they're compatible with many engine swaps. Holley EFI systems wiring harnesses are sold individually or as a kit; choose the model needed for your fuel injection application.
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$649.95
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$972.95
$583.95
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$874.95
On Sale
Holley Oil Dipstick and Tube Kits for GM LS
Holley offers oil dipstick and tube kits for GM LS engines that are direct-fit assemblies for their LS retrofit oil pans. Each of these kits include the braided steel dipstick and black powdercoated steel tube built from the same high-quality materials as the OEM units. The oil dipstick and tube kits for GM LS engines provide both pieces together for one price to complement their oil pans.
( 35 )
$53.79
$48.41
On Sale
Holley Dominator EFI Vehicle Management Systems
Holley Dominator EFI vehicle management systems are intended for all engine applications, from street to high-end racing. They have nearly unlimited capabilities to control any power adder, input, or output that you can throw at them. Features include: * 12 sequentially driven 8:2 peak and hold injector drivers capable of driving up to 24 low or high-impedance injectors * 12-channel distributorless ignition outputs capable of directly driving smart ignition coils or Holley DIS coils * Plug-and-play control of factory GM 24x and 58x LSX engines * Integrated electronic transmission control--currently can control GM 4L60E and 4L80E * Integrated dual channel wideband oxygen sensor controls, work with NTK or Bosch sensors * Integrated drive by wire throttle body control, can control two drive by wire throttle bodies * 4-stage progressive nitrous oxide controller * Turbo boost control * Integrated water/methanol injection control * Integrated data acquisition and control allowed with massive amount of programmable inputs and outputs * Internal data logging standard with a huge 2 GB of memory * Self-tuning fuel table strategy greatly simplifies tuning process * Store and change between four calibrations * Individual cylinder fuel and spark control allows you to unlock your engine's potential
( 6 )
$3,149.95
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$3,499.95
$2,833.95
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$3,148.95
On Sale
Holley EFI GM-Style Fuel Filter Regulators
Holley EFI GM-style fuel filters have a built-in regulator to provide a simple and clean means to fueling your LS swap. Available with OEM-style or -6AN connections, they feature an internal regulator set at 58 psi, along with an integrated 5 nominal micron rated filter. The bypass design allows you to run one inlet with one outlet to the engine, and a return outlet back to the tank. Holley EFI fuel filter regulators are ideal when performing a LS engine swap or any other fuel injection swap that is designed to run at 58 psi of static pressure. Choose the fuel filter/regulator with the proper connections for your vehicle. Features: * All stainless-steel construction for improved corrosion resistance * Designed with one inlet, one outlet, and one return * Fixed pressure at 58 psi * Nominal micron rating: 5 * Can be used with other EFI systems that require 58 psi * Not recommended with fuel pumps that flow over 450 lph * Return line required for proper regulator operation
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$54.59
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$79.09
$49.13
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$71.18
On Sale
Holley LS Modular Lo-Ram EFI Intake Manifolds
Holley LS Modular Lo-Ram EFI intake manifolds are designed for GM LS Gen III and IV engines equipped with GM LS1/LS2/LS6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and a 105 mm throttle or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood in the front-feed configuration. The modular design allows the use of front-feed plenum entry, while intake design facilitates custom inlet duct and throttle body placement. Additional features and specs: * Cast aluminum construction with satin silver finish * Modular design allows the use of front-feed plenum entry * Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification * With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used * High-volume fuel rails and mounting hardware included with 3/4 in.-16 O-ring ports (8 AN) * Fuel rail kits include two sets of brackets; a set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors
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$665.95
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$1,299.95
$598.95
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$1,168.95
On Sale
Holley EFI Fuel Rails
These machined aluminum EFI fuel rails are capable of handling 1,100+ hp engines. They feature a large inner diameter bore to decrease fuel pressure drop and help cancel out back pulses.
( 54 )
$233.95
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$425.95
$210.55
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$382.95
On Sale
Holley Sniper EFI Fabricated Intakes
Holley Sniper EFI fabricated intake manifolds are budget-friendly and performance laden! These durable Holley hi-ram manifolds feature 3mm (1/8 in.) thick T-6061 sheet aluminum construction with 100 percent TIG welds. The EFI versions have 92mm or 102mm throttle body openings, as well as runners with tapered tops to increase velocity and evenly distribute airflow. They also include 3/8 in. fuel rail kits and, of course, are branded with the Holley Sniper EFI logo. Budget and performance go hand-in-hand when it comes from Holley in the form of their Sniper EFI fabricated intakes. Order the model and options recommended for your make/engine application.
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$805.95
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$972.95
$494.95
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$874.95
On Sale
Holley EFI LT1 Gen V Hi-Ram Intake Manifolds
Holley EFI LT1 Gen V Hi-Ram intake manifolds provide the ultimate performance with GM direct-injected Gen V 6.2L LT1 engines. The modular design allows easy disassembly for custom porting, multiple tops, or custom induction systems. Each runner has a large radius where it meets the plenum, and optimized taper and cross-sectional area to perform in a wide variety of engine configurations. When you look for the pinnacle of performance, price, and quality, look to Holley Hi-Ram intake manifolds for your LT1 application. Features include: * Available with injector bosses on the intake runners that provide increased performance potential by using additional injectors and the factory direct injection * Removable top * Large plenum volume * Intakes with injector ports include fuel rails with dual mounting * Fuel rails are anodized, laser-etched, and machined for -8 AN O-ring fittings at each end * Rear of plenum machined for MAP sensor and three vacuum ports * Head flange has clearance for fuel supply to a high-pressure pump * Increased runner wall thickness for custom porting at the plenum to runner entry on each runner * O-ring seals at cylinder heads and plenum top * Easy assembly with top-mounted screws on plenum top (except front two screws) * Several top options: 1 x 95mm, 1 x 105mm, 2 x 4150, 2 x 4500, or blank flange for custom throttle bodies * 3,500 to 8,000-plus rpm power band
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$972.95
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$1,349.95
$874.95
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$1,213.95
On Sale
Holley LS Throttle Bodies
Holley LS throttle bodies are unquestionably the biggest bore and most feature-loaded option available. Holley went back to the drawing board and built the ultimate air valve for your LS engine. They are available with huge 105mm or 95mm bores--and low rpm, drive-friendly tapers. The 105mm version is designed for drag race applications when wide-open throttle is all that matters. Features like idle bleed adjustment, TPS clocker, and PCV passage defeat valve units, making them the ultimate throttle bodies for ease of installation and tuning. Regardless of whether you have a turbo, supercharger, or a big cam engine sucking gulps of air, Holley LS throttle bodies are manufactured from high-grade billet aluminum, and black anodized to give them a modern tech look, they're maximized for your application.
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$849.95
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$870.95
$763.95
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$782.95
On Sale
Holley EFI LS Hi-Ram Intake Manifold Bases
Holley EFI LS Hi-Ram intake manifold bases are cost-effective alternatives to fabricated sheet metal for high performance applications where induction system height is not limited. Coupling these cast aluminum Hi-Rams with the high flowing LS-style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. These modular lower manifolds accept a wide range of carbureted and EFI tops, making them attractive to builders and fabricators as the perfect foundations for custom induction systems. Fuel rails are included and machined for -8 AN O-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system. The aggressive, bold, race-bred styling of Holley GM LS modular Hi-Ram lower manifolds will make bad intentions clear for drag race, muscle car, marine, off-road, sand rails, pulling trucks, track, and street-rod applications.
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$921.95
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$1,024.95
$828.95
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$921.95
On Sale
Holley EFI LT1 Gen V Lo-Ram Intake Manifolds
Holley is the new standard in EFI! The Holley EFI LT1 Gen V Lo-Ram intake manifolds are designed for GM Gen V LT engines equipped with GM LT cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine application. The top-feed plenum base intake manifold is designed with a reduced overall height to fit under a stock or mildly modified hood. The Lo-Ram provides a low-profile modular intake manifold that's suitable for use with plenum mounted air-to-water intercoolers for boosted applications. Various Hi-Ram plenum top options are available to complement the top-feed base intake manifold kits and fabrication flanges are offered to aid fabrication of plenum tops for custom installations. Features: * Designed for GM Gen V engines equipped with GM LT type cylinder heads * As-cast aluminum (satin) and black powdercoat finishes available * 105mm diameter throttle body opening accepts OEM 4-bolt LS/LT DBW or Holley LS/LT throttle bodies * Engineered for forced induction (supercharged or turbocharged) engine applications with peak power at 7,000-8,000 rpm, depending on the application * Low-height top-feed plenum profile to fit under a stock or mildly modified hood * Modular design and top entry plenum flange allows the use of popular Holley Hi-Ram plenum tops, as well as facilitating custom fabricated plenum tops—base manifold, plenum tops, and fabrication flanges available as separate kits * Designed for the accommodation of plenum mounted air-to-water intercoolers for boosted applications * Available models for OE direct fuel injection only and with port fuel injection provisions—for the port fuel injection option, the high-volume fuel rail kit includes hardware and brackets to accommodate long (usually standard length) fuel injectors or short * Kits with port injection provide high volume fuel rails with 3/4 in.-16 O-ring ports (8 AN) * Mounting hardware is included * 3.18 in. taller than a factory LT1 manifold
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$562.95
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$1,049.95
$505.95
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$871.20
On Sale
Holley Terminator X MAX Stealth 4150 24X LS EFI Fuel Injection Systems
Holley Terminator Max X Stealth 4150 24X LS EFI systems feature four 100 lbs./hr. fuel injectors capable of supporting up to 650 hp naturally aspirated or 600 hp on forced induction applications. The Terminator X ECU provides fuel maps that self-learn and integrated ignition timing control, yielding improved idle stability, drivability, and horsepower at wide-open throttle! Holley Terminator Max X Stealth 4150 24X LS EFI fuel injection systems also include transmission kick-down provisions for GM TH350/400, 200R4/700R4, and Ford C4/C6 applications, as well as plug-and-play transmission control for GM 4L60 and 4L80 applications. System features include: * All wiring exits below the fuel injector bowls for a complete stealth installation * Air entry machined to fit most stock-style air cleaners with air cleaner locator provisions * Integrated ignition timing control offers plug-and-play with factory LS coil sub-harness and OEM LS coils (no external boxes/modules needed to run coil near plug) * High-resolution, full-color touchscreen for initial setup, tuning, and gauge displays * Simple calibration wizard—no laptop required * (4) inputs (12 V, ground, 5 V, and frequency) for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (fuel and oil pressure inputs are pre-terminated) * (4) Outputs (ground, PWM -) for accessories such as fans, boost control, nitrous control, IAC kit, and more * Genuine Bosch LSU 4.9 wideband oxygen sensor provides real-time fuel map learning * OEM-style TPS/IAC for years of dependable service * Available in 3 finishes: shiny, black, and gold * Compatible with Holley EFI digital dashes, gauges, and fuel system accessories
Not Yet Reviewed
$2,819.95
$2,536.95
On Sale
Holley EFI LS Single Plane Mid-Rise Intake Manifolds
Holley EFI LS single plane mid-rise intake manifolds are great for your higher horsepower engine. Featuring cast aluminum construction, these manifolds are also great for centrifugal blower, turbocharged, or NOS mild power adder applications. The efficient casting design is lightweight--11.5 lbs.--with consistent wall thickness and strong mounting flanges. The optimized runner layout and constant cross sectional area offer a broad torque curve, with the best vehicle performance from 2,500 to 7,000 rpm. The mid-rise design offers minimum carb mounting flange height--without sacrificing power--and is another plus for vehicles with minimum hood modifications. Holley EFI LS single plane mid-rise intake manifolds include zinc-plated hex head cap mounting bolts and washers, pipe plugs to block manifold vacuum and MAP sensor ports, and Viton® O-ring cylinder head mounting flange gaskets for an OEM-style seal.
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$491.95
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$562.95
$441.95
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$505.95
On Sale
Holley Power Steering Pumps
Holley has responded to the expanding late model marketplace by developing the most complete line-up of performance upgrades and engine swap products, including Holley power steering pumps. They are available in two versions: cast iron Saginaw Type II pumps with reservoirs for use on low accessory drives; or Corvette-style lightweight aluminum pumps (also known as Saginaw TC type pumps) for use with Holley driver's side brackets. The aluminum pumps also work with Holley's special reservoir kit.
( 1 )
$562.95
$505.95
On Sale
Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems
Holley Terminator Max X Stealth 4150 58X LS EFI systems feature four 100 lbs./hr. fuel injectors capable of supporting up to 650 hp naturally aspirated or 600 hp on forced induction applications. The Terminator X ECU provides fuel maps that self-learn and integrated ignition timing control, yielding improved idle stability, drivability, and horsepower at wide-open throttle! Holley Terminator Max X Stealth 4150 58X LS EFI fuel injection systems also include transmission kick-down provisions for GM TH350/400, 200R4/700R4, and Ford C4/C6 applications, as well as plug-and-play transmission control for GM 4L60 and 4L80 applications. System features include: * All wiring exits below the fuel injector bowls for a complete stealth installation * Air entry machined to fit most stock-style air cleaners with air cleaner locator provisions * Integrated ignition timing control offers plug-and-play with factory LS coil sub-harness and OEM LS coils (no external boxes/modules needed to run coil near plug) * High-resolution, full-color touchscreen for initial setup, tuning, and gauge displays * Simple calibration wizard—no laptop required * Four inputs (12 V, ground, 5 V, and frequency) for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (fuel and oil pressure inputs are pre-terminated) * Four outputs (ground, PWM -) for accessories such as fans, boost control, nitrous control, IAC kit, and more * Genuine Bosch LSU 4.9 wideband oxygen sensor provides real-time fuel map learning * OEM-style TPS/IAC for years of dependable service * Available in three finishes: shiny, black, and gold * Compatible with Holley EFI digital dashes, gauges, and fuel system accessories
( 1 )
$2,819.95
$2,536.95
On Sale
Holley Universal Ignition Harnesses
If your vehicle's main wiring harness doesn't have COP (coil-on-plug) trigger wires, you can simply upgrade to one of Holley's universal ignition harnesses. They're specially designed to install coil-on-plug or coil-near-plug coils on Holley EFI systems into Holley Smart Coil ignition sub-harnesses or GM LSx coil harnesses. These harnesses are ideal for use with Holley HP or Dominator ECUs, but are compatible with other EFI systems, as well. Extra pins are provided for both the metripak and ECU ends, if you decide to shorten the harnesses. Caution should be taken to ensure coil trigger wires are installed in their correct pin locations to prevent engine misfire. Make certain your EFI system fires right every time with Holley universal ignition harnesses.
Not Yet Reviewed
$191.95
$172.75
On Sale
Holley Water Pump Assemblies
Holley water pump assemblies feature genuine Holley quality parts to help maximize your engine's power and performance by keeping things cool. Multiple models are available to fit different engines. Order the water pump assembly by Holley designed to fit your application.
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$120.95
$108.85
