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2003 Engines & Components

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Results 1 - 19 of 19

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Melling Timing Chain Sets

Melling timing chain sets are designed for use with either performance or stock cams. They have a solid-bushing chain for a true bearing surface that rolls with the sprockets, eliminating chain stretch. The crank gears are machined from stress-proof steel. Most Melling timing chain sets have three keyways to ensure accurate timing for early or late model vehicles, and to allow you to set the cam timing at 4 degrees advanced, 4 degrees retarded, or stock. However, 50-state (stock replacement) sets have single keyways. The chains are available in several styles, such as single or double roller, single non-roller, and link belt. Melling timing chain sets are not for use above 6,500 rpm. Order the model designed for your vehicle application.

4.22 out of 5 stars ( 133 )

$390.99

$472.99


$295.50

$396.50

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Mahle Original OE Replacement Pistons

Mahle Original replacement pistons have the same great OE features to provide the perfect fit and function in your vehicle. They offer things like compensated ring grooves to ensure proper ring loading and oil control; as well as expansion-controlled designs for small fitting clearances—to reduce engine noise, wear, emissions, and improved oil control. Choose the model designed for your vehicle and engine application.

4.0 out of 5 stars ( 7 )

$430.99

$614.99


$269.50

$345.50

On Sale

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Standard Motor Variable Cam Timing Solenoids

Standard Motor variable cam timing solenoids are direct-fit OE replacements for your vehicle's original components. These solenoids effectively restores engine horsepower and torque curves while reducing emissions and improving vehicle efficiency. Standard variable cam timing solenoids have been manufactured to exceed OEM specifications for dependable, accurate, maintenance-free operation.

5.0 out of 5 stars ( 4 )

$492.99


$379.50

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ICON FHR Series Piston and Ring Kits for GM LS

ICON FHR Series piston and ring sets for GM LS offer premium, custom options in an "off the shelf" option for your LS-family engine. FHR (Formed Head Relief) pistons have valve reliefs that are formed in as the piston blank is pressed into the die, creating a stock, but light forging. Many of the domed models are solid which allows tailoring the dome height for a specific compression ratio. They are constructed from high-strength, forged 4032 aluminum alloy for increased durability while maintaining tighter piston-to-wall clearance for increased cylinder sealing, lower cylinder wear, and stock-like noise levels, making them ideal for street and lightly boosted applications. Completing these kits are file-fit ring sets that allow custom ring gaps for your specific application, and they are built to handle the abuse of stock street or forced induction to nitrous applications. ICON FHR Series pistons for GM LS also feature: * Mini grooves allow an overheated piston that contacts a cylinder wall to transfer heat to the wall. Friction is also reduced over a solid ringland. * Accumulator grooves provide a reservoir area for gases that pass by the top ring. Pressure is reduced between top and second ring to help stabilize flutter and maximize ring seal. * 0.030 in. offset wrist pins * Round wire locks * M42 skirt coating

5.0 out of 5 stars ( 1 )

$490.99


$307.50

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Scat Pro Sport H-Beam Connecting Rods

These H-beam connecting rods are the strongest Scat connecting rods available. These Scat H-beam connecting rods are perfect for supercharged and nitrous applications. These rods incorporate a special doweled cap for specific cap-to-rod alignment and are profiled with extra clearance for stroker applications.

4.8 out of 5 stars ( 41 )

$452.99


$291.50

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Summit Racing™ Pro Diesel Camshafts

Summit Racing™ Pro diesel camshafts are available for a variety of applications, including many Chevrolet Duramax V8 engines from 2001 to 2016. The solid roller style cams are offered in different models and options, such as all low-end power performance; mid-range; or top-end gains. Explore our Pro 1, Pro 2, and Pro 3 models, then select the grind and details that best suit your truck requirements.

Not Yet Reviewed

$699.99


$449.99

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Mopar Replacement Timing Chains

Mopar Replacement timing chains are genuine Mopar parts that you can count on to supply the OE-fit and function you're expecting. Manufactured from quality materials, Mopar timing chains will get you back on the road. Select the Mopar Replacement timing chain designed for your application.

Not Yet Reviewed

$619.99


$287.50

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Cloyes Timing Chain Kits

Cloyes timing chain kits meet OE performance requirements. They utilize the latest in design and materials so you can enjoy quiet, maintenance-free performance. These assemblies are available in various styles, including link belt, single roller, and single non-roller. Order the kit designed for fitment on your specific model or engine application.

4.45 out of 5 stars ( 174 )

$388.99

$444.99


$299.50

$342.50

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Cloyes Timing Chain and Gear Sets

Cloyes timing chain and gear sets provide the ultimate in timing reliability. They include a steel crankshaft gear and either an aluminum or ductile iron camshaft gear, along with a chain. Cloyes timing chain and gear sets have been precision-hobbed and crown-shaved to provide an accurate gear-to-gear mesh with no wear and tear on the gears.

4.5 out of 5 stars ( 6 )

$453.99


$293.50

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KB Performance Hyper Piston and Ring Kits

KB Performance Hyper piston and ring kits are offered for a wide range of applications from street and towing to marine and race. The kits feature pistons cast from 390 hypereutectic alloy heat-treated to T-6 standards to make them stronger. The pistons also feature fully machined crowns and valve pockets. KB hypereutectic pistons come in several head designs, as well as standard and oversized bore sizes. All KB Hyper pistons are lightweight to improve throttle response and rpm changes, while still being strong enough to withstand high compression and high temperatures. KB Performance Hyper kits (KT) are completed with piston ring sets containing top rings of moly-coated cast iron (M) or ductile iron (D).

4.58 out of 5 stars ( 72 )

$449.99


$336.50

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ICON Premium Forged Piston and Ring Kits

You don't need a king's ransom to rule the track. ICON premium forged piston and ring kits deliver high performance racing pistons crafted from high-strength 2618 primary aluminum alloy and matched with performance rings, creating remarkable value-packed kits. The pistons feature fully machined heads and valve ports, advanced accumulator and mini groove technology, drilled pin holes, triple wound spiral lock rings, and their proprietary diamond-finished skirts. Heavy-duty ICON premium forged pistons can handle the pressure and abuse from the horsepower numbers that your engine produces. If you're ready to give up your kingdom to build more horsepower with a great set of pistons--think again! ICON premium forged pistons and ring kits will help you reign victorious without spending a lot of cash.

4.56 out of 5 stars ( 18 )

$531.99

$741.99


$378.50

$458.50

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Speed-Pro Hypereutectic Pistons

If you're looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from aluminum alloy that contains 16 percent silicon for greater strength and wear resistance. They're also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that today's top engine builders demand. Hypereutectic pistons are ideal for use in high performance street, bracket, and oval track racing—and will work perfectly with normal ring end gaps. Choose the model designed for your vehicle and engine application.

4.59 out of 5 stars ( 333 )

$391.99


$298.50

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Isky Keyway Lifter Bore Bushings

Available in keyed and non-keyed styles, Isky lifter bore bushings are precision made from a special bronze alloy that lasts 2 to 4 times longer than most others. They also prevent excessive scuffing of roller lifter bodies. Isky keyed-style lifter bore bushings are for keyway roller lifters. Select the correct size for your engine and lifters.

Not Yet Reviewed

$605.99


$420.50

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ATS Diesel Performance Valve Spring Kits

ATS Diesel Performance valve spring kits feature a conical design that provides more valve control than a standard straight spring. The conical shape allows for a smaller and lighter spring retainer that is also stronger due to size reduction. Unlike other valve springs on the market, ATS valve spring kits can be used on a wide range of trucks, from stock all the way up to competition builds making 2,000 horsepower. Each spring is computer load mapped and matched within 1 lb. of seat pressure followed by a stress relief process to ensure quality and long-term reliability. For a one-and-done upgrade that will allow you to modify your engine to support more power down the road, the smart choice is ATS Diesel Performance valve spring kits.

Not Yet Reviewed

$522.50


$396.50

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Melling Stock Replacement Camshafts

Perfect for replacements or stock rebuilds, Melling stock replacement camshafts can restore your engine's true potential. They're available in a variety of styles, including hydraulic flat tappet, roller tappet, and roller follower; and mechanical flat tappet. Melling offers affordable, quality engine parts, including a full line of cams for cars, light trucks, and imports as far back as the mid-1950s. If you want quality that you can count on at a price that's hard to beat, order the Melling stock replacement camshaft designed for fitment on your vehicle.

4.44 out of 5 stars ( 18 )

$419.99

$429.99


$301.50

$347.50

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GMB Timing Belt and Water Pump Kits

GMB timing belt and water pump kits comes complete with the OE quality you've been satisfied with for years. GMB is a major manufacturer of timing components, and these kits along with their quality water pumps are sure to please. The kits are available for an extensive range of applications. GMB timing belt and water pump kits feature: * OE factory-tested timing components * OE belt manufacturer * GMB water pump designed to match OE coolant flow rate and pressure * Rigorous testing and quality control for all bearing components * All kits are complete with gaskets and seals

5.0 out of 5 stars ( 1 )

$394.99


$300.50

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Crower Hydraulic Roller Camshafts

Crower high performance hydraulic roller camshafts will definitely get you going down the track. With competitive lift and duration, they'll complement the torque and horsepower needed to take you to the winner's circle. Order the model designed for your vehicle and engine application.

5.0 out of 5 stars ( 2 )

$520.99


$294.50

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ICON Premium Forged Pistons

ICON premium forged pistons are made from high-strength, heat-treated aluminum alloy. They feature a diamond-machined skirt, head, mini-grooves, pin bore, gas accumulator, ring grooves, and pressure-drilled pin hole oiling. The pistons have a V-rib design for light weight, strength, and maximum piston cooling. Compare weight, performance, design, and cost—and you will win with ICON!

4.79 out of 5 stars ( 43 )

$460.99


$343.50

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Ross Racing Forged Pistons and Ring Kits

Ross Racing pistons are forged from 2618-T61 aluminum alloy and come standard with a ton of great features. All pistons are balanced to +/- 2.5 grams and come with aircraft-quality pins. These Ross Racing forged piston and ring kits include: * Ross Racing rings * Forced piston-pin oilers * Double Spirolox pin retainers * Valve pockets engineered for oversize valves and modern high-lift cams * Fully CNC-machined skirts to deal with high heat and side loadings * Radiused domes (on most applications)

5.0 out of 5 stars ( 1 )

$559.99


$474.50

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