Availability
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
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$204.95
On Sale
Holley Street Performance mechanical fuel pumps are designed to work with stock or mildly modified engines. Ranging in performance styles of 80 to 225 gph, their body castings can be rotated 360 degrees to ease mounting in difficult places and they have large orifices for high flow rates. These pumps are not compatible with methanol or alcohol fuels and should not be used with fuel injection systems. A fuel pressure regulator is required for 130 gph versions.
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$161.95
$107.22
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$236.95
Holley Track Series valve covers are GM licensed and provide an excellent way to add high-end appeal to your favorite Chevy engine. These lightweight, yet tough valve covers are constructed of 6061 T-5 sheet aluminum, precision TIG-welded for a proper fit. They feature laser-etched Chevrolet and Bowtie emblems. The covers are available in silver anodized or black coated finishes, along with various heights to clear most popular rocker arm combinations. All models include mounting hardware for quick and simple installation.
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$204.95
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$235.95
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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$152.95
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$245.95
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
Holley LS steam vent kits prevent hot spots or overheating. Designed to eliminate trapped air and steam from your engine, these complete kits are available to plumb your engine and include the appropriate hose and hose ends to make installation a breeze. They are more attractive than the OEM lines and offer increased flexibility when using aftermarket intakes and other accessories on your performance vehicle. Holley LS steam vent kits may feature: * Adjustable pivoting steam vent adapters * Black push-on or stainless braided Speed-Flex hose and hose ends * Available in front or 4-corner plumbing options
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$174.95
Designed to extend your factory coil harness so you can easily remote-mount your ignition coils, these wire assemblies by Holley provide an ideal solution for cleaning up the look of your engine bay. They provide the means for mounting your ignition coils off the valve covers with their OEM connectors that provide a secure connection between your ECU and coils. Get the customization you want with the Holley ignition coil extension harnesses designed for your application.
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$129.95
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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$101.95
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$225.95
Holley Sniper EFI fuel rails hit the mark every time--on time! It's not enough to shoot fuel to your injectors; the process must be consistent and precise for efficient engine performance. Holley Sniper kits will deliver the performance, and they feature billet aluminum rails with a black anodized finish and a laser-engraved Sniper logo. If your target is the optimum delivery of fuel, equip your manifold with Holley Sniper EFI fuel rail kits.
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$193.95
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$217.95
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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$363.95
$171.86
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$241.95
On Sale
Holley Sniper fabricated aluminum valve covers deliver high-end looks without the high-end price! They're constructed from 6061 T-5 sheet aluminum and precision TIG-welded for a proper fit. Plus, they feature thick one-piece CNC billet flanges for superior sealing. Sniper valve covers are available in your choice of natural or black powdercoat finishes, as well as with or without breather openings—and heights to clear most popular rocker arm combinations. Holley includes mounting hardware for quick and simple installation. Order a pair for fitment on your particular engine application.
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$238.95
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$245.95
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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$196.95
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$231.95
Holley cast aluminum timing covers offer a durable upgrade to the plastic OEM timing chain covers on 1996-up Vortec small block Chevy engines. These aluminum covers feature timing indicators molded into the body and are available with a natural cast or satin black finish. A quality gasket and E-coated mounting hardware for added corrosion resistance are included. Holley cast aluminum timing cover features include: * Available for EFI (with crank sensor provisions) and carbureted applications (without crank sensor provision) * Includes over-molded FKM oil seal, virtually eliminating concerns of the seal spinning out at high temperatures, which is common with other aluminum timing covers * Accommodates both stock and aftermarket water pumps
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$115.95
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$122.95
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.
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$233.95
If you're looking to swap an LSA or LS engine into your vehicle, but your engine didn't come with a power steering pump or the factory setup is too wide to fit properly in your bay, Holley has the answer. These new Mid LSA/LS Accessory Drive Bracket Kits offer clean, economical mounting of all LS engine accessories. The Power Steering Bracket pulls the pump in closer toward the engine when compared to the original LSA accessories, giving more clearance in swap applications. Also, Power Steering Hard Line Adapter 197-207 is not required, but makes a potentially daunting plumbing task quick and painless. There is no doubt this bracket kit looks truly at home on the LSA engine, so much so that nobody will realize it didn't come from factory this way. Product features: * Compatible with the original LSA damper/pulley and similar aftermarket versions * Compatible with Holley's Integral Reservoir and Type II Power Steering Pump (198-101) * P/S hard line adapters available (197-207) * Compatible with Holley P/N 20-160 compact SD7 A/C kit * Compatible with LSA and 2010-15 LS Camaro water pumps * Notably more clearance to swap applications than other options * OE pulley ratios for optimal accessory performance, allows for larger SC crank pulley * Original Equipment look—available in natural and black finishes
Not Yet Reviewed
$161.95
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$185.95
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
$224.95
Holley ECU mounting brackets allow you to comfortably install either the Dominator ECU, Holley HP, Terminator X, or Terminator X-MAX under your Mustang's front passenger seat. They're designed to work with stock seats and seat tracks (modified/race seats may or may not accommodate them). You simply route all your ECU harnesses through the firewall--properly route the wires, install the unit followed by the ECU, and then reconnect your wires and go! Use your laptop to fine-tune the ECU without popping the hood and protect it from engine bay heat with Holley ECU mounting brackets. Order the brackets recommended for your application.
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$112.95
On Sale
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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$349.95
$197.36
Holley spark plug wires will energize your project! They offer a variety of styles and configurations for countless vehicles from the 1990s and up. The wires are available assembled or cut-to-fit. Whether you're looking for high-temperature protection, race, street, motorcycle, or stock replacement, Holley has the right spark plug wires to match your needs—and supply the juice you desire. Order the set recommended for your application.
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$186.95
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$204.95
Holley LS engine power steering reservoir kits feature everything you need to add a power steering fluid reservoir to any of Holley's driver side LS accessory drive brackets. They include one composite, baffled OE-style reservoir tank, one cap with a level indicator, a steel mounting bracket, a power steering pump to reservoir hose, and two hose clamps.
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$169.95
Holley LS tensioner assemblies are designed for use with all Holley passenger side LS accessory drive brackets. They include a 68mm grooved pulley and are made of high-quality materials to ensure long-lasting performance. If you're looking for a new tensioner assembly for your LS motor, Holley has the high-quality parts you can depend on time and time again.
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$129.95
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$199.95
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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$216.95
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$222.95
Holley replacement crankshaft pulleys are made from steel and finished in black. These are the correct components and service parts for your Holley mid-mount accessory drive kits.
Not Yet Reviewed
$152.95
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$204.95
You already have the wire and Holley EFI ECU connector kits have the rest of what you need to rewire your EFI installation. Fully terminate your own custom main harness with Holly EFI ECU connector kits. Features include: * Pre-terminated J1A/J1B Tyco Superseal connectors * 20 to 22 gauge pre-terminated wires * 16 to 18 gauge pre-terminated wires * Cavity plugs
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$161.95
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