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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.
( 39 )
$255.95
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$327.95
On Sale
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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$388.95
$260.10
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$499.95
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.
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$255.95
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$334.95
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
On Sale
Holley LS engine accessory drive kits offer simple, clean, cost-effective solutions when swapping a GM LS engine into a muscle car, truck, hot rod, or any other vehicle. These bracket kits deliver a factory-style appearance, correct belt alignment, and factory stability. They fit virtually all common LS engines, regardless of water pump and harmonic balancer offsets—reducing cost and complexity. Holley LS engine accessory drive kits position the A/C compressor high above the crossmember, but below the hood line, for an easy installation. The brackets are manufactured from diecast aluminum with a natural, polished, or black finish. (An application-specific installation kit is required, but sold separately.)
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$603.95
$265.01
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$481.95
Holley HP EFI smart coil sub harnesses contain two preterminated harnesses designed to work with Holley HP smart coils used on 8-cylinder engines. One end plugs directly into the Holley smart coil, and the other end features a 7-pin Metri-Pak connector that plugs into the Holley universal coil-on-plug harness (HLY-558-307, not included), Holley LSx main harness, or factory GM LSx harnesses.
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$286.95
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$293.95
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.
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$255.95
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$425.95
Holley has responded to the expanding LS marketplace by developing the most complete line-up of LS performance upgrades and engine swap products, including Holley LS engine power steering pumps. They are available in two versions: cast iron Saginaw Type II pumps with reservoirs for use on low LS 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 will also work with Holley's special LS reservoir kit.
( 9 )
$460.95
Holley harmonic balancers are offered for a variety of internally or externally balanced applications; in versions for engines requiring weighted or non-weighted balancers. All are accurately balanced and carefully machined for correct fit. Holley harmonic balancers feature clear, white, easy-to-read timing marks against a painted black background.
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$334.95
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$342.95
On Sale
Holley cooling manifolds are designed for use with their mid-mount accessary drive systems. These aluminum manifolds are offered with a black, polished, raw, or satin finish. Keeping your vehicle cool is the key to maximum performance. Holley cooling manifolds will help dissipate some of that extra heat.
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$434.95
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$460.95
On Sale
Holley LS engine air conditioner brackets are designed to help you mount your A/C compressor and tensioner in the correct position. They include the necessary hardware to mount the assembly in place—and require an application-specific installation kit, sold separately. Holley cast aluminum brackets are available for a variety of compressor styles. Choose the model needed for your application.
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$277.95
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$375.95
Holley RetroFilter air cleaners cleverly hide an LS drive-by-wire throttle body inside to maintain a low height and classic looks. Utilizing a hidden opening in the base to hide unsightly wiring from the throttle body, this trick air cleaner allows you to experience all the benefits of modern technology and keep the vintage look you want. Pair with any Holley intake manifold with a 4150/4610 square bore flange for maximum aesthetics and performance. The opening is 92mm, but any 4-bolt pattern LS throttle body will physically fit. Holley recommends the LS2/LS3/LS7 style but the L33, L76, and L92 should also fit. RetroFilter DBW air cleaners are available in a 16 in. round or 14 in. dual snorkel style with either a black or chrome finish. Choose the one you prefer under the hood of your vehicle. Features: * Allows full EFI functionality stealthily hidden within a traditional looking air cleaner package * Each kit includes a 3 in. tall, pre-oiled, washable, and reusable premium cotton gauze filter element * Adapts to LS-style drive-by-wire throttle bodies found on the LS2, LS3, LS7, etc. * Can be installed on any vehicle running a top mounted 4150/4-barrel EFI capable intake manifold with LS3 DBW wiring components * Stamped aluminum lid and base for optimal durability and lightweight Note: Requires adapter to connect to 4150/4160 square bore flange-style manifold. Holley EFI part no. 17-93 is recommended.
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$269.95
Complete your EFI Hi-Ram manifold with a Holley Hi-Ram intake manifold top. These intake manifold tops, along with their matching bases, are made from cast aluminum—with either a natural or black finish. They provide a cost-effective option for your high performance applications where induction system height is not limited. Get aggressive, bold styling and performance with a Holley EFI Hi-Ram intake manifold top.
Not Yet Reviewed
$423.95
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$485.95
Does your donor engine have a questionable water pump? Or, did you just discover after starting an engine swap that the accessories are interfering with things? Changing the belt alignment can help and, thankfully, Holley mechanical water pumps can get you there with ease. These pumps will fit a variety of applications and belt alignments—including the most popular and cost-effective truck engines. They're a budget-friendly option that will fit nicely under the hood. The water pumps even work with most truck accessories without changing out your entire accessory drive system to match their belt alignment. Holley Performance just keeps making swaps easier and easier! Order your OE replacement model, or the design and configuration that best suits your engine.
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$278.95
On Sale
Bolt a carburetor onto your LS engine using Holley LS mid-rise carbureted intake manifolds. These intake manifolds work on all GM LS, Gen III, or Gen IV engines equipped with rectangular or cathedral port cylinder heads. Available in a single or dual plane design, these manifolds use an O-ring cylinder head mounting flange to provide an OEM seal and make installation a snap. You'll also receive mounting bolts, washers, and pipe plugs for the manifold vacuum and MAP sensor ports.
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$460.95
Holley drive-by-wire throttle body wiring harnesses are designed for use with the Holley Dominator ECU, as well as the factory drive-by-wire throttle body. These harnesses feature pre-terminated connections, ensuring true plug-n-play installation.
Not Yet Reviewed
$255.95
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$485.95
Holley LS valley covers are the latest accessories offered for the GM LS engine platform. These covers install between the two banks of cylinder heads, depending on your usage of knock sensors, displacement on demand, and active fuel management. They're available in a cast aluminum finned design to match Holley's popular valve covers, as well as a billet aluminum trussed version for a race-inspired look. The valley pan covers are offered in a variety of finishes.
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$279.95
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$306.95
Holley LS valve cover adapter plates offer an innovative way to add the vintage styling cues of a 1958-86 small block Chevy perimeter bolt valve cover to your modern GM LS engine. These cast aluminum adapter plates include hardware to mount three different generations of coil packs under the valve cover without the need of any coil relocation kit, and you retain all the benefits of OE-style coil-on-plug mounting. These adapter plates feature an integrated oil fill and are pre-threaded for PCV ventilation fittings.
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$299.95
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$306.95
Holley LS engine alternator and power steering brackets are designed to help you get your alternator and power steering pump mounted in the proper location. They include the necessary hardware to mount the assembly in place. An application-specific installation kit may be required, and must be purchased separately if needed.
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$299.95
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$306.95
Get the best possible sensor pickup with Holley crankshaft trigger wheels. These wheels have 60 notches, plus one TDC double notch. They are available in a number of different sizes to support the clearances on different engines from 5 in. to 8 1/2 in. in diameter. The center hole is 1 in. in diameter and may require machining for application.
Not Yet Reviewed
$306.95
Put your Holley pride on display with a set of attractive Vintage Series valve covers. Their die-cast aluminum construction ensures high detail, while reducing the opportunity for oil leaks and warping of the flange. Choose from among a half-dozen finishes to give your engine a clean, professional look. The vehicle-specific covers are available for every model year dating as far back as 1958.
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$434.95
On Sale
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.
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$390.95
Holley EFI LS Fabricated Hi-Ram intake manifold tops are solutions to having limited room in the front of the engine bay. These 4mm thick aluminum plenum tops allow you to mount the throttle body on the side. This setup will allow for easier fabrication for boosted applications or for just a different look on your Hi-Ram manifold. Designed to mount on Holley's existing Hi-Ram manifold bases, they are available in silver or black finishes in throttle body patterns of either 95mm or 105 mm sizes.
Not Yet Reviewed
$460.95
Holley drop-in fuel module assemblies cover a wide range of vehicles and performance expectations—including dual pump designs. These replacement assemblies meet the highest-quality standards offered for increased performance and fuel efficiency. Holley drop-in fuel modules are capable of supporting 550-plus horsepower right out of the box! Dozens of models are available, with flow rate options between 50 and 277 gph. Order the fuel module recommended for your vehicle. Features may include: * Plug-and-play wiring harnesses * Integrated fuel storage and filtration technology * Built-in, pre-calibrated fuel level sensors * HydraMat filter (keeps fuel available at the pick-up during radical maneuvers and provides contamination protection) * Most models include sending unit
( 8 )
$460.95
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