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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
( 91 )
$2,299.95
$2,068.95
On Sale
Holley Single Plane Carbureted Intake Manifolds
Holley single plane carbureted intake manifolds are designed to provide a broad rpm powerband for high performance street/strip engine applications to a maximum engine speed of 7,500 rpm. The carburetor mounting pads will accept all stock or aftermarket square-bore carburetors with manual or electric chokes. These Holley intake manifolds are also engineered to accept most stock hardware and accessory brackets—but offer performance features like: an updated plenum divider area; a 1 in. shorter height than their Strip Dominator manifold; and a choice of two distributor clamp locations. The isolated design of the air/fuel passages helps to increase charge air density and performance. Features include: * Single-plane with isolated plenum * Square-bore carburetor mounting flange * Isolated water crossover * Power band: 2,500 to 7,500 rpm * Height: Front 4.18 in., rear 5.28 in. * Port size: 1.92 in. height, 1.20 in. width
( 9 )
$562.95
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
$449.95
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$505.95
On Sale
Holley EFI Hi-Flow Billet Fuel Rails
Holley EFI Hi-Flow billet fuel rails offer flow capacity for high horsepower applications and billet aluminum construction that is machined and black anodized for great style under the hood. Laser-etched with the "Holley EFI" logo, the fuel rails feature a 5/8 in. diameter fuel passage, -8 ORB ports on each end, and an 1/8 in. NPT port for a fuel gauge installation if you choose to do so. Holley EFI Hi-Flow billet fuel rails are designed with the factory injector clip reliefs so that your factory injectors and retaining clips can be reused. This is important as the clips locate the injector radially for proper injector spray pattern onto valves. The kits include fuel rails, mounting brackets, and required mounting hardware.
( 3 )
$255.95
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)
( 96 )
$1,949.95
$1,753.95
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$1,949.95
On Sale
Holley Alternator Brackets
Holley alternator brackets are the perfect solution to mounting your alternator when a new brackets is needed. Made from high-quality materials and available in multiple finishes Holley alternator brackets will look great under the hood of any show car. Order the model recommended for your engine application.
( 2 )
$390.95
$351.85
On Sale
Holley EFI Gen III Hemi Single Plane Intake Manifolds
Holley EFI Gen III Hemi single plane intake manifolds provide maximum hood clearance combined with plenum and runner geometry that provides a broad rpm powerband for high performance street/strip engine applications to a maximum engine speed of 7,500 rpm. The isolated design of the air/fuel passages helps to increase charge air density and performance. Holley EFI Gen III Hemi single plane intake manifolds are great for turbocharger, centrifugal blower, or NOS power adders. Features: * Minimum carburetor flange height for maximum clearance to hood * 4150-type throttle/carb flange * Cast aluminum construction * Billet fuel rails * Billet aluminum oil fill cap * Mounting brackets for use with either Bosch EV1 or Gen III Hemi OEM fuel injectors * O-ring seals around ports * Natural or black finish available
( 2 )
$649.95
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$665.95
$583.95
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$598.95
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 Power Steering Pulleys
Holley power steering pulleys are designed to work with Holley aluminum power steering pump assemblies and similar pumps with a 0.66 in. shaft. These Corvette-style steel pulleys are the accessory drive add-ons you need to keep your auto running smooth.
( 13 )
$126.95
On Sale
Holley EFI Gen III Hemi Hi-Ram Intake Manifolds
Holley EFI Gen III Hemi Hi-Ram intake manifolds are for high performance applications where induction system height is not limited. Able to add even more power to your engine, these manifolds have large intake ports and a modular base design with runner lengths and tapered cross-sections that will perform well for a wide range of engine configurations. Their aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, and street-rod applications. Holley EFI Gen III Hemi Hi-Ram intake manifolds feature cast aluminum construction offered with a natural satin or black finish. They are available with either a 95 or 105mm LS-style throttle body or as the manifold base alone for custom induction systems. Features and benefits: * Modular design base accepts a wide range of EFI tops and can be used as the foundation for custom induction systems * EFI fuel rails are machined for -8 AN O-ring fittings with passages large enough to accommodate high fuel flow and dampen pressure pulsations in the fuel system * Intended for use on naturally aspirated, forced induction, or nitrous engines in the 5.7L to 7.2+L range, and maximum power at 7,500 to 8,500 rpm * Works with Gen III Hemi injectors and Bosch EV-1 style injectors * O-ring seal to head offer superior OE-style sealing and are easy to replace * Billet oil fill cap offers an attractive low-profile design * Positive Crankcase Ventilation (PCV) ports with adapter fittings * Port for OE-style Manifold Absolute Pressure (MAP) sensor (1 or 2 Bar) * Cast-in pads for adding nitrous nozzles
( 2 )
$1,024.95
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$1,549.95
$921.95
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$1,393.95
Holley Gen III Hemi Timing Covers
Holley Gen III Hemi timing covers are offered in two finishes for your mid-mount accessory drive system. Available for Hemi engines with or without VVT, these covers are the correct replacements for those originally supplied in your Holley complete accessory system. They will provide the perfect fit and expected performance to service your system. Choose the Gen III Hemi timing cover required for your setup.
Not Yet Reviewed
$530.95
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$587.95
Holley Power Steering Mounting Plates
Holley power steering mounting plates provide the perfect solution for the factory power steering pumps on late-model engines that have too much pressure for the steering box on most older muscle cars and trucks. These billet aluminum mounting brackets bolt to existing tapped holes on the left side of the cylinder head of Gen III Hemi style engines. Keep your power steering pump securely in place with Holley power steering mounting plates.
Not Yet Reviewed
$81.95
Holley Power Steering Pump Kits for Gen III Hemi Engines
Holley offers power steering pump kits that are ideal for Gen III Hemi engine swaps. The late-model factory power steering pump on the Mopar Gen III Hemi engines have too much pressure for the steering box on most older muscle cars and truck models. These special Saginaw Type II power steering pumps will produce the proper pressure, and the pulley is sized to operate the pump at the proper speed when used with the factory drive system on Gen III Hemi engines with a factory timing cover. The hardline adapter moves the power steering hose connection to a more easily accessible location for ease of installation and maintenance. Features and benefits: * Low-pressure power steering pump kit—for use with factory low-pressure steering boxes on muscle cars and trucks with Gen III Hemi engine * Works with factory "truck style" accessory drive system for 2009-2022 5.7L Ram 1500 Gen III Hemi engines—and some additional applications * Works with factory timing cover (Mopar P/N: 53022195AM) * Helps prevent damage to steering box on older vehicles (due to excessive pressure) * 6-rib billet aluminum pulley with black anodized finish—sized for proper pump speed * Power steering pump assembly includes a plastic reservoir * Special hardline moves -6 AN hose connection to a more accessible location
Not Yet Reviewed
$486.95
Holley Crankshaft Seal Installation Tools
Holley crankshaft seal installation tools keep the seal straight and square during installation, eliminating seal damage. Featuring diecast aluminum construction, the seal installation tool is to be used along with a standard harmonic balancer installation tool to properly install the crankshaft seal in the timing cover. These special tools from Holley are available for your Gen III Hemi or 7.3L Godzilla engine. Choose the one for your engine. Holley installation tools are available to: * Work with Holley Gen III Hemi mid-mount accessory drive systems and stock factory timing covers * Work with 7.3L Godzilla engine and Holley and stock factory timing cover
( 1 )
$25.61
On Sale
Holley Power Steering Hard Lines
Holley power steering hard lines offer a clearance solution. The pressure hose connection on the Type II power steering pump is really close to the pulley making it difficult to attach the hose. Holley power steering hard lines move the connection behind and below the pump for clearance and improved appearance. The special banjo bolt and crush washers provide additional clearance. Holley also includes a mounting bracket that makes the hardline stronger and less likely to crack from vibration or abuse. The kits are made from strong steel and zinc plated.
( 4 )
$74.85
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.
( 106 )
$3,949.95
$2,227.96
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$4,099.95
On Sale
Holley Wiring Harness Connectors
Holley wiring harness connectors provide one-stop shopping for your wiring needs. Along with their extensive line of wiring components, Holley offers a tremendous assortment of genuine OEM connectors to hook up your wiring project properly, securely, and completely. They're available individually and in packs of 10—with most including pins, seals, and TPA. Finish wiring your Holley-powered machine with their quality wiring harness connectors.
( 9 )
$11.63
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$15.15
Holley Off-Road 2019-2024 Ram 1500 Performance Packages
Holley Off-Road has been working hard to bring innovation and incredible products to your Ram 1500 platform. These Performance Packages by Holley are a comprehensive performance upgrade kit tailored for 2019-2024 Ram 1500 pickups. The suspension upgrades feature ADS Racing Shocks Mesa 2.5 Series shocks, which are larger than stock, providing increased fluid capacity to prevent shock fade and deliver exceptional off-road durability combined with commuter comfort. The kit also includes a Flowmaster Signature Series exhaust system, known for its hand-welded 304 stainless steel construction and balanced sound profile, offering an aggressive yet moderate tone. Additionally, each package is equipped with a tuner suited for each model year, including DiabloSport PredatorX, Intune 3, and DFM Module + Amp'd Throttle Boost Kit, all of which provide pre-loaded tunes and customization options for optimal performance. Finally, Big Claw Performance rotors are included, designed for improved braking performance and enhanced cooling to ensuring safety and reliability during high-performance driving. Gear up your 2019-24 Ram 1500 pickup for your next off-road adventure with one of these complete Performance Package upgrades from Holley Off-Road.
Not Yet Reviewed
$5,194.95
Holley Off-Road 2025+ Ram 1500 Performance Packages
Holley Off-Road has been working hard to bring innovation and incredible products to your Ram 1500 platform. These Performance Packages by Holley are a comprehensive performance upgrade kit tailored for 2025+ Ram 1500 pickups. The suspension upgrades feature ADS Racing Shocks Mesa 2.5 Series shocks, which are larger than stock, providing increased fluid capacity to prevent shock fade and deliver exceptional off-road durability combined with commuter comfort. The kit also includes a Flowmaster Signature Series exhaust system, known for its hand-welded 304 stainless steel construction and balanced sound profile, offering an aggressive yet moderate tone. Additionally, each package is equipped with a tuner suited for each model year, including DiabloSport PredatorX, Intune 3, and DFM Module + Amp'd Throttle Boost Kit, all of which provide pre-loaded tunes and customization options for optimal performance. Finally, Big Claw Performance rotors are included, designed for improved braking performance and enhanced cooling to ensuring safety and reliability during high-performance driving. Gear up your 2025+ Ram 1500 pickup for your next off-road adventure with one of these complete Performance Package upgrades from Holley Off-Road.
Not Yet Reviewed
$6,020.95
On Sale
Holley Intake Manifold Hardware Kits
Holley offers intake manifold hardware kits for a variety of Chevrolet engine applications from 1997 and up. The installation hardware is available in a silver or black finish.
Not Yet Reviewed
$52.69
