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2003 HARLEY-DAVIDSON Engines & Components
Showing In Stock Items. Show All 128 Items.
K&N Premium Powersports Oil Filters
K&N premium oil filters for powersports vehicles utilize an innovative, highly efficient synthetic-blend filtration media designed to be compatible with synthetic, petroleum-based, and blended oils, including the high concentrations found in synthetic racing oils. The heavy-duty canister is engineered to be exceptionally durable, and a 17mm welded hex nut can be used for quick and easy filter removal. Engineered to support exceptionally high flow rates while providing outstanding protection from harmful engine contaminants, each filter is specifically designed to withstand the service intervals recommended by vehicle manufacturers. For a high-performance design with outstanding filtration, order the K&N premium powersports canister oil filters best suited for your application. More product features include: * Pleated synthetic-blend filtration media * Pre-drilled nut for safety wire attachment * Laboratory tested to ensure excellent capacity, efficiency, and mechanical strength * Designed to operate with all synthetic, conventional, and blended motor oils
( 94 )
$15.99
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$19.99
Clearance
WIX Filters Chrome Oil Filters
WIX Filters chrome oil filters are a chrome plated version of the same high-quality WIX filter you normally use, but with a show-quality finish.
( 3 )
$15.99
Clearance
WIX Filters Oil Filters
WIX oil filters play a vital role in in your vehicle's lubrication system, protecting your engine from premature wear. As gearheads know, every moving part in the engine requires clean oil! WIX oil filters trap more dirt than the leading national brand, and they keep filtering long after the competition has completely quit. WIX patented the first spin-on oil filter in 1954 and has been at the forefront of filter technology ever since. Canister-style oil filters feature strong, full-metal base plates to prevent leaks at the double seam under severe driving conditions. They also offer glass-enhanced media that improve each filter's ability to catch and hold engine-damaging dirt. Choose the WIX oil filter to fit your make and model—for a cleaner-running engine over many extra miles.
( 394 )
$8.99
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$10.99
KB Performance V-Twin Piston and Ring Kits
KB Performance V-Twin piston and ring kits bring all of the knowledge and experience of a legendary engine builder to the world of high performance motorcycles. These pistons use the latest manufacturing techniques and standards to ensure quality and maximum available performance. The kits are offered in hypereutectic 390 alloy and forged 4032 low-expansion alloy. KB Performance V-Twin piston and ring kits are available for Harley-Davidson® and Indian motorcycles in a variety of engine sizes and compression ratios.
( 20 )
$175.46
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$258.65
Hastings Premium Ductile Ring Sets
Whether it's a car, truck, motorcycle, marine, or performance racing application—properly sealing the piston to the engine block is a requirement. Hastings premium ductile ring sets do just that, and they're offered in many different options to fit virtually any piston. If the engine you're working on is blowing smoke, using excessive oil, or at a loss for power, it may be time for new rings. These premium ductile piston ring sets are great for rebuilds or new builds, daily drivers or performance vehicles. Order the sizes needed for your project.
( 152 )
$16.99
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$72.99
Fram Motorcycle Full-Flow Lube Spin-On Oil Filters
Fram Motorcycle Full-Flow Lube Spin-On oil filters provide 3X more engine protection than the leading economy filters. They feature a cellulose and synthetic glass media with superior filtering capabilities. Fram Motorcycle Full-Flow Lube Spin-On oil filters are available for a wide variety of applications, in a choice of finishes.
( 6 )
$6.88
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$11.47
COMP Cams High Performance Valve Spring Kits
Simplify your valvetrain assembly! COMP Cams high performance valve spring kits have everything that you need for a complete valve spring assembly. Springs and retainers are included, along with complete instructions for a worry-free installation.
( 34 )
$145.95
S&S Cycle 883 to 1200cc Hooligan Cylinder Kits
An 883 to 1200cc Hooligan cylinder kit for a Harley-Davidson®, like the ones made by S&S Cycle, provides a significant increase in engine displacement, resulting in substantially more power and torque without requiring major engine modifications, making it a popular upgrade for riders seeking better performance on their Sportster 883, with benefits like increased horsepower—by boosting the engine size from 883cc to 1200cc, the Hooligan kit delivers a noticeable power gain, allowing for better acceleration and highway cruising capabilities. Typically these kits are designed as "bolt-on" upgrades, meaning they can be installed without needing extensive machining or engine rebalancing, making the process relatively simple and straightforward. Compared to a complete engine rebuild, a Hooligan kit is a cost-effective way to significantly improve your bike's power. When installing a Hooligan kit, it may be necessary to upgrade the clutch to handle the increased torque produced by the larger engine. Depending on the specific kit and your bike setup, you may need to adjust fuel injection mapping to optimize performance.
Not Yet Reviewed
$1,128.95
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$1,822.95
S&S Cycle 97 in. Big Bore Kits
S&S Cycle 97 in. big bore kits will increase the displacement of 88 in. engines to 97 in., are easy to install, and require no machining or re-balancing. Using an 11-fin design, these pre-finished cylinders closely resemble the OEM shape and are ready to install. Order an S&S Cycle 97 in. big bore kit—and take your stock engine case as big as it'll go! Features of the S&S Cycle 97 in. big bore kits: * The 97 in. big bore kits for 88 in. motors yield excellent results with stock cylinder heads * Feature the same silver or black wrinkle powder-coat as stock, so they match the stock finish of the engine * Specifications: 3.927 in. bore, 4 in. stroke, 97 in. displacement, and 9.7:1 compression ratio with stock heads (9.3:1 compression ratio with S&S 89cc heads or 10.7:1 with S&S 79cc heads) * Feature the largest bore (3.927 in.) that can safely be used in a cylinder with stock spigot diameter * Included S&S cylinders feature a much stronger cast iron liner to stand up to the added power * Easy installation: no need to bore or split existing cases, just swap the cylinders *Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust) * For best performance, appropriate camshafts, performance air cleaner, performance exhaust and fuel system tuning is required
Not Yet Reviewed
$1,287.95
S&S Cycle Standard Forged Rocker Arms
S&S Cycle standard forged rocker arms are designed for superior strength and to eliminate the failure-prone stress areas found in other rockers. These replacement arms are forged from 8620 steel, heat-treated, and then shot-peened for additional strength. They feature 3/4 in. long bronze bushings, compared to the more common 1/2 in. long bushings or needle bearings. S&S Cycle roller arms are available in the stock 1.625:1 ratio and 1.725:1 ratio. Order the set recommended for your bike model.
Not Yet Reviewed
$334.95
Hastings Piston Ring Sets
Whether it's a car, truck, motorcycle, marine, or performance racing—properly sealing the piston to the engine block is a requirement. Hastings Piston ring sets do just that, while being offered in many different options to fit virtually any piston out there. If the engine your working on is blowing smoke, using excessive oil, or at a loss for power, it may be time for new rings. Hasting piston ring sets are great for rebuilds or new builds. Hastings has been manufacturing piston rings since 1915 and they have not spent a second developing anything but piston rings. Trust the professionals at Hastings and use them on your next job.
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$24.99
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$35.99
S&S Cycle Rocker Arm Shafts
S&S Cycle rocker arm shafts provide your American motorcycle with components that are produced from chromoly steel and duplicate the originals for a perfect fit and provide the expected performance. They are available in sets of 4 or sold individually. Replace your rocker arms with quality S&S Cycle rocker arm shafts.
( 1 )
$59.95
Wiseco Tracker Series Pistons
Wiseco offers Tracker Series pistons for a variety of applications, including many Honda©, Kawasaki, KTM, Husqvarna, Gas Gas, Suzuki, and Yamaha off-road bikes and ATVs from 2006 and up. At the end of the day, it's all about the freedom riding gives us, which is why Wiseco believes the reliability and performance benefits of forged pistons shouldn't have to break the budget. Enter Tracker Series, a no-frills line of pistons for Harley-Davidson© engines designed to offer the forged strength Wiseco is known for at a mid-level price point. With multiple configurations available for different Harley© engine platforms, Tracker Series pistons will get you to the checkers. Additional product details: * Proprietary near-net forging technology reduces the amount of finish machining required, offering lower cost without sacrificing strength and longevity * ArmorFit skirt coating reduces operating friction and increases wear resistance for a better performing, longer lasting part * Supplied in kits containing pistons, rings, wrists pins, and circlips all under one part number * Ring sets include 3mm oil ring assembly, providing better oil control for consistent cylinder lubrication and reduced blow-by, resulting in improved durability and performance
Not Yet Reviewed
$122.99
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$290.99
Wiseco Black Edition V-Twin Piston Kits
Wiseco offers Black Edition V-Twin piston kits for a wide range of Harley-Davidson® street bikes. They feature forged aluminum pistons with ArmorX coating for reduced wear and superior protection in extreme conditions. An ArmorFit skirt coating auto-adjusts to the cylinder wall (so there's no need to measure clearance), providing smooth, quiet, trouble-free operation. The pistons are available in a variety of bore sizes and other options. Order the kit recommended for your motorcycle. Additional product details: * Dome design for improved flame travel to maximize air/fuel burn efficiency * High compression (11:1) for added power * Superfinish piston pin reduces friction and improves scuff resistance * Enhanced pin oiling for improved lubrication and reduced friction * Augmented ring land details improve ring seal and function * Dedicated rings for precise fit, improved compression, and oil control * Kits include two pistons, rings, piston pins, and circlips
Not Yet Reviewed
$256.99
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$518.99
S&S Cycle Cylinder Studs
S&S Cycle cylinder studs are the perfect replacement for your OEM or S&S cases. These steel head studs are black oxide coated and strong enough to use on the largest of V-twin engines. So next time you do a top end on your Harley-Davidson®, update those head studs with S&S cylinder studs.
( 1 )
$92.59
On Sale
Moroso PCV Air/Oil Separators
Moroso PCV air/oil separators will help increase your engine's performance. These air/oil separators will capture excess oil and keep it out of your intake tract so that your engine will breathe cleaner intake air--better air equals better performance. Moroso offers universal and custom fit versions in small and large body sizes. The large bodies, besides having more capacity, feature a bottom drain with an elbow that makes draining the collected oil virtually mess-free. Their polished billet aluminum bodies can be chromed, painted, or powdercoated. The small units offer a 2-piece body that unscrews for draining and are available raw or with polished or anodized finishes.
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$258.99
$233.09
Twin Power Oil Filters
Twin Power sets a new clean air standard for your bike's engine through the manufacturing of oil filters. These oil filters utilize high-quality materials and construction to provide impressive filtration levels, and a high oil flow rate to keep your bike running cleanly and smoothly. Each of these oil filters has rolled and crimped edges to safeguard against leakage and features a built-in carbureted relief valve. They are available in a chrome or black finish to help keep that custom look to your Harley® make and model.
Not Yet Reviewed
$11.99
S&S Cycle Quickee Adjustable Pushrods
Easily installed, easily removed--S&S Cycle Quickee adjustable pushrods are designed for a simple, trouble-free installation that does not require removal of the gas tank, rocker assemblies, or even the rocker box cover! Innovative Quickees feature threaded adjusters that screw into the pushrods until the threads disengage and the adjuster simply slides into the pushrods, making your installation or removal easy. Then, once the pushrods are installed and adjusted, the locknut keeps the adjuster from moving. They will work with stock and aftermarket cams, as well as stock pushrod covers. S&S proven performance makes life easier with their Quickee adjustable pushrods.
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$209.95
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$336.95
HardDrive Rear Drive Belts
Rear drive belts are under tremendous stress. HardDrive replacement belts are manufactured from state-of-the-art materials to ensure high-strength durability, quiet running, and a long life. Confirm the exact size of belt that is on your bike prior to ordering.
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$189.86
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$230.36
S&S Cycle Oil Filters
S&S Cycle oil filters are constructed out of a sturdy steel canister, which houses the finest filtering media and internal components available. The filter media has traps to catch the smallest particles possible but not restrict flow. The filters are available in a black or chrome finish to accent your ride properly. With S&S Cycle oil filters you'll keep your oil clean and your engine protected.
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$183.95
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$288.95
HardDrive Oil Dipsticks and Filler Caps
Customize your Harley® with one of these HardDrive oil dipsticks and filler caps. These push-in accessories are made from steel with a brilliant chrome finish. In addition to the one-piece cap and dipstick, some models also include an analog oil temperature gauge that displays from 50 to 350 degrees F. Choose the style designed for fitment with your particular bike.
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$13.46
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$39.56
Wiseco 4-Stroke Piston Rings
Manufactured to the highest standards to outperform the competition, Wiseco 4-stroke piston rings maximize your performance and keep you firing on all cylinders. These rings are crafted from various metals and with specific finishes for both street and track. Designed to underscore piston lubrication, reduce bore friction, and optimize the heart of your engine, Wiseco rings improve the overall function of your pistons and powerplant. The 4-stroke rings are intended for use in cast iron, NikaSil, boron composite, and electrofusion bores; certain rings are designed for limited coatings, such as the XJ with chrome bores and the XN with NikaSil bores. Match up the specs from your motorcycle with the size and type of piston ring replacements you need. You can always depend on race-proven Wiseco technology!
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$41.99
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$56.99
HardDrive Performance Heavy-Duty Oil Filters
HardDrive offers Performance heavy-duty oil filters for a wide range of Harley-Davidson motorcycles from the 1980s and up, including Touring, FLT, Softail, and Sportster models. Order the replacement filter recommended for your bike. Product details: * Media enhancement by M-Pleating, increases dust holding capacity (DHC) and reduces pressure drop * The zigzag pleating pattern provides more filtration area, allowing more DHC * Additional filtration area gives the oil more room to flow, resulting in lower pressure drop * The media is resin-impregnated to ensure structural integrity during its operation under pressure and temperature spikes * Forming tapped thread for easy installation and spin-on * Pre-lubricated gasket * The gasket is lubed from the factory to aid installation * The base plate is covered with shrink film to ensure that the lube stays there until the time of usage and dust protection * Heat-resistant Anti-Drainback valve (ADBV) * Unlike standard nitrile rubber, silicone rubber has a higher heat resistance * The enhanced ADBV will prevent dry starts and provides durability throughout the extended life of the filter * 17mm hex nut * Easy for service and removal after prolonged usage * The nut is designed for safety wire attachment if needed * 16 weld spots for higher nut fatigue strength * 30+ percent gauge thickness for higher burst strength * Oval inlet hole for even lower flow resistance
Not Yet Reviewed
$11.66
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$13.46
HardDrive Billet Reusable Oil Filters
HardDrive reusable oil filters feature a CNC-machined billet housing with fins to increase its cooling abilities. Each filter element has three magnets to help collect debris that may contaminate the oil. These oil filters contain stainless mesh filter media that improves flow over paper fabric media; this also allows them to be easily cleaned and reused. The assemblies are available with a chrome or black anodized finish.
Not Yet Reviewed
$169.16
