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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.
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$767.95
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$870.95
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
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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$767.95
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$972.95
Holley LS Engine Swap Accessory Drive Systems
Now available from Holley are LS engine swap accessory drive systems. Included are accessories and pulleys that are manufactured by OEM part suppliers for durability and direct bolt-on installation. Order the kit that's best suited for your vehicle and engine application. Features and facts: * Universal brackets fit virtually all common LS engines, regardless of water pump and harmonic balancer offsets--thus reducing cost and complexity compared with competitive products * Simple, dedicated installation kits allow easy fitment to Corvette, F-Body, or truck drive offsets * Accessories, tensioner, and pulleys are manufactured by OEM suppliers and many of the parts are used on production vehicles today
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$870.95
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$999.95
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
Holley EFI LS Single Plane Split-Design Race Intake Manifolds
Developed with performance in mind, Holley EFI LS single plane split-design race intake manifolds feature a race bred, 2-piece split design that was previously found only on the most expensive race intakes. These manifolds will fit GM LS Gen III engines with cathedral port heads for high performance/racing engine applications with 5.3 to 6.2 liter displacement and maximum engine speeds of 6,000 to 7,000 rpm, depending on the engine combination. The single-plane design provides optimal performance across the rpm spectrum, while the split feature, which allows disassembly of the intake for direct access to internal plenum and port surfaces, makes custom porting and matching a snap. Shoulder bolt locators and an O-ring seal makes reassembly simple and precise.
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$819.95
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$849.95
Holley LS Split Design Carbureted Intake Manifolds
Holley LS split design carbureted intake manifolds are single-plane racing units designed with performance in mind. They feature a race-bred, 2-piece split feature that was previously only found on the most expensive race intakes. The manifolds will fit GM LS Gen III engines with cathedral port heads—and are intended for 4150-style square bore flanged carburetors or throttle body EFI. The LS Race single-plane intake manifold was designed for high performance/racing engine applications, 5.3 to 6.2+ liter displacement—and maximum engine speeds of 6,000 to 7,000 rpm, depending on the engine combination. This single-plane design provides optimal performance across the rpm spectrum, while providing maximum performance up to 7,000 rpm. Features include: * Maximum performance race design with hood clearance consideration * Lighter than other split race intakes * Split feature allows disassembly of the intake for direct access to internal plenum and port surfaces, making custom porting and matching a snap * Shoulder bolt locators and O-ring seal make reassembly simple and precise * 33 to 50 percent the price of other split race intakes * Vacuum port options: Two 1/8 in., one 1/4 in., and one 3/8 in. NPT ports at the carb flange
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$767.95
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$799.95
Holley LS Modular Hi-Ram Intake Manifold Bases
Holley LS Modular Hi-Ram intake manifold bases could be the foundation for your custom induction system. Aggressive looks and bold styling make your bad intentions clear, whether you're drag racing, truck pulling, or making waves in your boat when you start with one of these Hi-Ram bases. Their modular design allows them to accept a wide range of carbureted and EFI tops. Plus, their runner length and tapered cross-section are designed to perform well for a wide range of engine configurations. When there's no limit on height, start your build with one of Holley's cost-effective LS Modular Hi-Ram intake manifold bases.
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$799.95
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$819.95
Holley LS 2x4 Dual Plane Fuel Injected Intake Manifolds
Holley LS 2x4 dual plane fuel injection intake manifolds allow you to install dual throttle bodies on your late model LS Series engines. Their dual plane, equal-distribution layout produces great midrange torque without compromising top-end power. The manifolds feature all cast aluminum construction, a wide 1,500 to 7,000 rpm power band range, and can accept dual inline mounted 1,000 cfm throttle bodies with a 1.750 in. maximum throttle bore diameter.
Not Yet Reviewed
$819.95
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
On Sale
Holley Sniper Carbureted Fabricated Intake Manifolds
Holley Sniper carbureted fabricated intake manifolds are budget-friendly, sheet metal style intake manifolds. Each manifold is precision-fixtured and welded for a perfect fit and structural integrity. They are available for carbureted Chevy LS, Ford Coyote, small block Chevy, big block Chevy, and small block Ford engines. Features include: * Available for single or dual carburetor applications * 3mm (1/8 in.) thick T6061 sheet aluminum construction * More durable than competitive intakes * Bead-blasted silver or black anodized finishes * 100 percent TIG-welded * Custom Holley Sniper logo
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$771.99
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$899.95
Holley Replacement Fuel Injector Wiring Harnesses
These Holley replacement fuel injector wiring harnesses are replacements for the 8-cylinder injector harnesses. They connect the main harness to the injectors, routing the wires over the rail and making replacement a snap!
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$921.95
On Sale
Holley Sniper Fabricated Dual Plenum Intake Manifolds
Holley continues to push the envelope of intake design with their latest offering: the Sniper fabricated dual plenum intake manifolds! This unique "dual plenum" design offers increased airflow and even dispersion of air to intake ports—solving the two most common problems experienced with many intakes. The manifolds are available in configurations and options for year/make and engine applications from the 1990s and up. Features and benefits of Holley Sniper fabricated dual plenum intake manifolds include: * Dual plenum design—ideal for street max effort engines and boosted applications * 3mm (1/8 in.) thick T-6061 sheet aluminum construction (for durability in high horsepower and boosted conditions) * 100 percent TIG-welded * Available in a choice of bright silver or black anodized finish * Equal runner lengths with tapered intake plenums designed to increase velocity and more evenly distribute airflow to all cylinders * Available in 92mm and 102mm bore throttle body openings * Long intake runner lengths (12.75 in.) offer low-end torque and operating range of 1600-6800 rpm
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$1,499.95
$852.45
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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$972.95
On Sale
Holley Sniper EFI Fabricated Race Series Intake Manifolds
Holley Sniper EFI fabricated Race Series intake manifolds utilize a larger intake plenum for max effort engines and boosted applications. These manifolds feature 5mm (13/64 in.) thick T-6061 sheet aluminum construction with 100 percent TIG welds. With their removable tapered top, increased velocity and more evenly distributed airflow to all cylinders is a guarantee! Race Series intakes also include 3/8 in. fuel rail kits, -8 AN fittings, and crossover-braided line capable of supporting 750+ hp. They're available in multiple anodized colors, and every manifold has the Holley Sniper EFI logo.
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$1,449.95
$825.47
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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$767.95
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$819.95
On Sale
Holley EFI Coyote Hi-Ram Intake Manifolds
Holley EFI Coyote Hi-Ram intake manifolds are designed to fit stock bolt pattern OE heads found on Ford Coyotes and related engine families, such as Voodoo and Predators. These kits include fuel rails for use with OEM-type fuel injectors and clips, mounting hardware, and O-ring gaskets. Offered in black and natural as-cast finishes, the manifolds have a 9.20 in. runner length and are designed to improve the mid to high RPM powerband. The aggressively designed Hi-Ram is constructed in a two-piece design to accommodate for air to water intercoolers and feature up to 20 percent more plenum volume versus Ultra Lo Rams. This manifold design is only offered in an oval throttle body configuration. Product features: * As-cast aluminum construction: more durable for boosted applications, can be welded for modifications * Modular design: accessible runner entries for porting, allows accessories like intercoolers and nitrous plates * Refined port design with streamlined injector boss for reduced turbulence without loss of flow area * Allows a variety of throttle valves, including large monoblade, 2015-20 GT350, 2007-14 GT500, 2019-23 GT500, GM LS 4-bolt, 2011-23 Ford Mustang GT (with optional adapter 717-18) * Fuel rails with -8 AN ports and dual 1/8 NPT accessory ports for gauges or Gen 3 direct injection fuel line hookup * Two 1/8 NPT ports on all manifolds. Two 3/8 NPT ports on all manifolds
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$924.95
$821.57
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$950.95
Holley EFI Hi-Ram Intake Manifolds
Holley offers EFI Hi-Ram intake manifolds for a variety of applications, including many vehicles from the 1950s, '60s, '70s, and '80s with a Chevy small block Gen I engine. Fuel rail kits are provided and have mounting for both long and short type fuel injectors. These manifolds offer the performance potential and the appearance of professionally prepared billet and fabricated racing intake manifolds at the affordable price of a cast-aluminum product. They deliver 21st century performance for the iconic small-block Chevy engine. * Model 300-950 is of standard Hi-Ram configuration with a "top-feed" plenum and a plenum top designed to accept up to an 105mm Gen IV LS 4-bolt throttle body, including drive-by-wire throttle bodies. * Model 300-951 is a hood-height friendly Hi-Ram variation which has a "front-feed" plenum and a forward-facing throttle body flange which accepts an up to 95mm LS 4-bolt throttle body, also, including DBW throttle bodies. It's an upgrade replacement for the Holley/Weiand Stealth-Ram intake manifold which was a popular manifold used to significantly improve the performance of 1985-92 GM 5.7L TPI fuel-injected engines. The 300-951 system installs under the OE hood for Gen 1, 2, and 3 Camaros and Firebirds. It should be compatible with most applications with a mild cowl induction hood. * Uses drive-by-wire or cable-actuated GM Gen IV LS 4-bolt throttle bodies * Throttle cable bracket is supplied in the kit * GM Gen IV LS MAP sensor port. Also has provisions for (1) 1/8 NPT, (1) 1/4 NPT, (1) 3/8 NPT fittings to the plenum * Power band: 1,500-8,000 rpm * Black anodized EFI fuel rails are machined for -6 AN O-ring fittings and come included with these EFI Hi-Ram kits * Plenum top gasket type – 3/32 in. round O-ring cord * Cast 356-T6 aluminum construction, natural, satin as-cast aluminum finish * Requires the use of early type GM or small cap MSD or Holley distributors. Not compatible with HEI distributors * 1.95 in. tall x 1.25 in. wide port flange openings
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$875.95
On Sale
Holley EFI Coyote Ultra Lo-Ram Intake Manifolds
Holley EFI Coyote Ultra Lo-Ram intake manifolds are designed to fit stock bolt pattern OE heads found on the 2011-23 Ford 5.0 Coyotes and related engine families, such as Voodoo and Predators. These kits include fuel rails for use with OEM-type fuel injectors and clips, mounting hardware, and O-ring gaskets. Offered in black and natural as-cast finish, the manifolds have a 9.20 in. runner length and are designed to improve the mid to high RPM powerband. The Ultra Lo-Ram provides an additional 19.4mm front and 42.6mm rear clearance compared to the Ford Performance Cobra Jet manifold—plus clears 2015-23 Mustang factory hoods. They're offered in both round and oval throttle body configurations, with replacement front inlets for easy interchangeability. The oval inlet can accommodate up to a 150 x 66mm single throttle body and 93mm on the round variant. Round inlets include standard mounting provisions for GT350, GT500, and LS 4-bolt throttle bodies. 2011-23 GT throttle bodies can be used with the optional 717-18 adapter. (NOTE: Coyote Ultra Lo-Ram intake manifolds are available with the base only, no top included, if desired. See "Intake Section Included" tabs.) Product features: * As-cast aluminum construction: more durable for boosted applications, can be welded for modifications * Modular design: accessible runner entries for porting, allows accessories like intercoolers and nitrous plates * 300-911 and 300-912 Ultra Lo-Ram will fit under stock hood with stock engine mounts in 2015-23 Mustang * Refined port design with streamlined injector boss for reduced turbulence without loss of flow area * Allows a variety of throttle valves, including large monoblade, 2015-20 GT350, 2007-14 GT500, 2019-23 GT500, GM LS 4-bolt, 2011-23 Ford Mustang GT (with optional adapter PN 717-18) * Fuel rails with -8 AN ports and dual 1/8 NPT accessory ports for gauges or Gen 3 direct injection fuel line hookup
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$924.95
$821.57
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$972.95
Holley Ford 351W Hi-Ram EFI Intake Manifold Bases
Holley Ford 351W Hi-Ram EFI intake manifold bases feature runner lengths and tapered cross sections designed to perform well for a wide range of engine combinations. The Holley engineering team also redesigned the water crossover passage to allow room for distributor phasing. Aggressive, bold, race–bred styling will make bad intentions clear for drag race, muscle car, marine, off–road, sand rails, pulling trucks, track, street rod applications and more! Features include: * Cast aluminum construction * The 351W manifold is available to work with 95mm or 105mm GM LS throttle bodies * EFI fuel rails are machined for -8AN O-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system * Plenum top gasket-type--3/32 in. round O-ring cord * Manifold is designed for a 9.5 in. deck height * Requires the use of Holley EFI dual sync distributor
Not Yet Reviewed
$972.95
Holley EFI Systems Main Wiring Harnesses
Choose EFI main power wiring harnesses from Holley to meet your needs. Several choices are offered—TBI, LS applications, multi-point, and un-terminated harnesses—to feed and carry your engine's electrical supply. Get wired for electronic fuel injection with Holley EFI systems main wiring harnesses.
Not Yet Reviewed
$870.95
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$972.95
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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$999.95
$767.95
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$871.20
On Sale
Holley EFI LT1 Gen V Ultra Lo-Ram Intake Manifolds
Holley is the new standard in EFI! The Holley EFI LT1 Gen V Ultra Lo-Ram intake manifold kits are designed for GM Gen V LT engines equipped with GM LT cylinder heads. They will work with OE or aftermarket cylinder heads. The Ultra Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications. The front-feed base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood. The Ultra Lo-Ram provides a very low-profile modular intake manifold along with various fabrication flanges to aid the fabrication of special throttle body adapters or inlet ducts for custom installations. Whether you're engine swapping your classic car or need to manage added horsepower in your twin-turbocharged drag radial race car, Holley EFI has the solutions you need to get your project up and running better than ever! 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 * Only 0.97 in. taller than a factory LT1 manifold provides maximum clearance under a stock or mildly modified hood * Modular design and front entry plenum flange allows design and fabrication of special throttle body adapters or inlet ducts for custom installations—base manifold, plenum top, throttle body adapter available as separate kits * Clears C7 Corvette cowls and hoods without modification * Available for OE direct fuel injection only or with added port fuel injection provisions * Kits with port injection provide high volume fuel rails with 3/4-16 O-ring ports (8 AN). Mounting hardware is included * Ultra Lo-Ram kits with a burst panel flange are available, Ultra Lo-Ram billet burst panel duct is offered separately (PN: 300-608 clear anodized, PN: 300-608BK black anodized)
Not Yet Reviewed
$899.95
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$1,099.95
$870.73
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$973.27
Holley Terminator X Engine Control Modules
Holley Terminator X engine control modules are standalone units intended for use as service components for your Terminator X EFI installation. Each ECU features real-time fuel learn, high-impedance injector drivers, an integrated 1 Bar MAP sensor, and four programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, or progressive nitrous control. Order your Holley EFI Terminator X Service ECU today. Features: * Compatible with Terminator X harnesses * OEM (Original Equipment Manufacturer) injectors supported with part numbers provided in the handheld wizard or software * Bosch LSU 4.9 wideband control (will not work with LSU 4.2 oxygen sensors) * Eight built-in multi-color diagnostic LEDs allow you to quickly identify a variety of potential system issues, such as: -- A failed TPS (Throttle Position Sensor) Autoset -- Faulty crank or cam sensors -- Potential oxygen sensor issues * Built-in 1 Bar MAP (Manifold Air Pressure) sensor -- On boosted applications, you can disable the internal MAP sensor and utilize an external MAP sensor * Four inputs—12 V, Ground, 5 V, and Frequency for things, such as: -- Additional pressure sensors -- Activation triggers for nitrous activation -- A trans-brake (Fuel and Oil Pressure Inputs are pre-terminated) * Four outputs--Ground, PWM, and accessories such as: -- Fans, boost control, nitrous control, IAC kit, and more * Boost control: -- Boost vs. Time/Gear/RPM/Speed, and boost safeties * Nitrous control: -- Single channel of wet or dry -- Progressive or non-progressive -- Rich/lean safeties -- Target closed loop AFR * Advanced tables: -- Four 1D tables -- One 1D per gear table -- Four 2D tables -- One 2D per gear table * Free EFI tuning software for complete control of your Terminator X powerplant
Not Yet Reviewed
$870.95
