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2003 Engines & Components
Showing In Stock Items. Show All 92 Items.
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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$4,509.95
$1,981.95
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$4,057.95
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.
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$292.95
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$799.95
$260.10
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$718.95
On Sale
Holley Retrofit Engine Oil Pans for GM LS Engines
Holley retrofit engine oil pans for GM LS engines are designed to install an LS engine in a variety of GM muscle car and truck chassis. They provide OEM fitment, OEM oil filter mounting, OEM oil cooler port provision, OEM engine NVH suppression, OEM flange gasket and sealing, proper structural rigidity, and OEM bellhousing attachments. The oil pans are manufactured from traditional high-quality cast aluminum and include a sump baffle, oil pump pickup tube, sump plug, oil filter stud, and oil passage cover.
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$449.95
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$526.95
$403.95
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$473.95
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 Gen III Hemi Retrofit Oil Pans
Mopar's popular Gen III Hemi engines are ideal for swapping into muscle cars since they are durable, reliable, and make great power. The factory oil pans that come on these engines usually do not fit and hang too low for your swap. Holley Gen III Hemi retrofit oil pans' cast aluminum construction and integrated windage tray combined with the O-ring sealing provide an attractive leak-free solution for your engine swap. With the included pickup assembly and mounting bolts, Holley Gen III Hemi mid-sump engine swap oil pans have everything you need for installation.
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$437.95
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$499.95
$393.95
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$448.95
On Sale
Holley LS Engine Accessory Drive Kits
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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$511.95
$91.75
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$459.95
On Sale
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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$2,305.95
$782.95
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$2,074.95
On Sale
Holley Harmonic Balancers
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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$342.95
$308.65
On Sale
Holley 2-Piece Ford Style Valve Covers
Holley's 2-piece LS valve covers are a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation. These modular LS valve covers feature an OE height, internally baffled LS valve cover base with integrated coil mounts for popular Gen I and Gen V style LS coil bodies, and a Ford style overcover that hides the unsightly LS coils and messy wiring harness. This allows the full performance benefits of coil-on-cover ignition setups without the robotic styling. These coil covers also feature cast-in provisions for the spark plug boots and coil wiring harness, so no extensions or custom wiring is required. Each 2-piece LS valve cover set includes a low-profile billet oil fill cap, hardware and spacers for mounting both versions of LS coil bodies, plus dress-up hardware and rubber grommets for the coil covers. The modular LS valve covers are available in three custom finishes: natural cast, polished, and satin black. Features: * Cast aluminum 2-piece LS valve covers designed to mount and hide both Gen I and Gen V style LS coil bodies * Retain the performance of factory coil-on-cover ignition without the unsightly styling * Coil cover features vintage Ford valve cover styling and cast-in wiring provisions * Base fits LS1, LS2, LS3, LS6 and LS7 engines with clearance for .750 in. lift cam with stock-style rocker arms * Base features internally baffled ventilation system * No coil relocation, wire harness extensions, or custom spark plug wires required * Includes low-profile billet oil fill cap * Includes all necessary coil mounting provisions and dress-up hardware
Not Yet Reviewed
$511.95
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$587.95
$459.95
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$528.95
On Sale
Holley LS Pontiac-Style Valve Covers
Holley modular LS Pontiac-style valve covers feature an OE height, internally-baffled base with integrated coil mounts for popular Gen I and Gen V-style LS coil bodies. The overcovers hide the unsightly LS coils and messy wiring harness—allowing the full performance benefits of coil-on-cover ignition setups without the robotic styling. Each modular coil cover features a simulated oil fill cap which helps maintain the original Pontiac styling. The coil cover also features cast-in provisions for the spark plug boots and coil wiring harness, so no extensions or custom wiring is required. Holley's 2-piece LS Pontiac-style valve covers offer a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation! More product features and items include: * Available in various finishes * Base fits LS1, LS2, LS3, LS6, and LS7 engines with clearance for 0.750 in. lift cam with stock style rocker arms * Base features internally baffled ventilation system * Each 2-piece LS valve cover set includes a low-profile billet oil fill cap, 2 billet simulated fill cap assemblies, hardware, and spacers for mounting both versions of LS coil bodies * Dress-up hardware and rubber grommets for the coil covers
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$599.95
$538.95
On Sale
Holley Retrofit Oil Pan Baffle Kits for GM LS
Vehicles that endure prolonged sessions of braking, turning, and accelerating need extra protection from oil starvation. That's where Holley retrofit oil pan baffle kits for the GM LS engines come in handy. They are designed to maintain proper oil level at the oil pump pickup during vehicle accelerations, both lateral and linear. The baffle maintains the oil at the oil pump pickup preventing loss of engine oil pressure during maximum cornering in a high performance touring or road racing, as well as under hard acceleration in drag racing vehicles. The baffle is fabricated from sheet aluminum joined by TIG-welded joints. Directionally positioned one-way trap doors allow oil flow towards the oil pump pickup but not away.
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$357.95
$322.15
On Sale
Holley LS Valve Cover Bolt Kits
Holley LS valve cover bolt kits are hardware assemblies developed specifically for Holley tall LS valve covers. Available as a single service component or a full set of eight, each bolt assembly features a polished valve cover bolt (M6 x 1.0 threads), aluminum spacer, and OE-style grommet. If you're dealing with lost or damaged fasteners for your tall LS valve covers, don't fret—order Holley LS valve cover bolt kits.
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$78.25
$70.43
On Sale
RT Off-Road Valve Covers
RT Off-Road valve covers make for classic good looks under the hood, while also serving as protection for your valvetrain (to keep oil from escaping the cylinder head). These cast aluminum valve covers are much less prone to flex and distortion than the plastic or factory stock versions and can be easily mounted on the top of the cylinder head. These valve covers are available in choice of finishes and include essential hardware for installation.
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$179.99
$131.39
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$161.99
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.
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$70.49
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$89.35
$63.44
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$80.42
On Sale
Holley LS Valve Cover Adapter Plates
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
$269.95
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$276.25
On Sale
Holley EFI Hi-Ram Intake Manifold Tops
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
$485.95
$436.95
On Sale
Holley LS Tensioner Assemblies
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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$175.95
$158.35
On Sale
Weiand Oil Pan Packages
Weiand oil pan packages were clearly visible on those old gassers, getting them down the track with speed and consistency. The oil pan features trap door baffles to help keep oil under control during hard acceleration, as well as increased oil capacity to keep high performance engine oil systems fed properly. Choose from among dozens of Weiand oil pan packages—a great option for drag race, road race, and circle track applications.
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$413.95
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$371.95
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$413.95
On Sale
Crown Automotive Rocker Arms
Crown Automotive rocker arms are direct-fit OE-style replacement parts for your Jeep. Rocker arms are designed to open and close at precise moments to allow the engine to run efficiently at all speeds. If you need rocker arms, then you need Crown Automotive parts. They are developed to deliver optimal performance and can withstand today's driving challenges.
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$13.99
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$131.99
$12.59
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$118.79
On Sale
Holley LS Valley Covers
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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$231.95
$208.75
On Sale
Crown Automotive Harmonic Balancers
Counter vibrations with Crown Automotive harmonic balancers. With these dampers attached, destructive torsional vibrations will be reduced, and this will help extend the life of your crankshaft. Crown has a selection of OE-fitting replacements made of iron and powdercoated. There is a lot of power and torque produced under the hood of your vehicle and Crown Automotive harmonic balancers will keep it all safely under control.
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$55.99
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$77.99
$50.39
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$70.19
On Sale
Summit Racing™ LS Front Drive Serpentine Kits
Get your project on the street quicker with a convenient Summit Racing™ LS front drive serpentine kit. Our selection offers options to fit your application with components that perform above your expectations! We select the pulleys, brackets, and hardware, as well as A/C compressors, alternators, and even belts (depending on the kit chosen) to get your LS-powered project moving. So, when it comes to saving time and money, why go anywhere other than Summit Racing™?
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$611.92
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$630.92
$584.12
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$603.12
On Sale
Holley Idler Pulleys
Holley idler pulleys are designed to help keep your belt in place during high rpm. They are manufactured from quality materials and are available in different designs to fit your specific belt.
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$67.05
$60.35
On Sale
Crown Automotive Rocker Arm Hold-Down Bolts
Crown Automotive rocker arm hold-down bolts are high-quality steel bolts made to fit specific applications. These pivot bolts are used to secure your rocker arm shafts when the old bolts break, become corroded, or have damaged threads. Crown Automotive is a leader in replacement parts for many vehicles.
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$2.99
$2.69
