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Valve springs compress and rebound hundreds of times a second. Make sure your next set of valve springs are built to last—and built to win! Trick Flow® by PAC Racing single valve springs feature flat internal damping coils to prevent spring surge at high revs, maintaining proper spring pressure at critical load levels. PAC springs are CNC coiled from high tensile-strength, extra-durable Pacaloy chrome-silicon steel and double shot-peened beyond Aerospace Material Specifications (AMS) reliability standards.
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$34.99
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$39.99
$31.50
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$34.50
Clearance
Dove Manufacturing offers valve spring locators, both inside and outside shoulder types, in a variety of thicknesses and diameters. Valve springs require installation at a certain height to function correctly, and you can use a set of shims to achieve this. But that will not eliminate unwanted motion in the spring. Using these steel valve spring seat locators will allow the valve spring to maintain its designed location, without dancing around on the surface of the cylinder head and possibly damaging it. Order a set of 16 in the size needed for your application.
Not Yet Reviewed
$72.99
$49.50
Clearance
Kibblewhite valve springs are designed using sophisticated, proprietary design and simulation software. That, as well as 70+ years of experience helps to determine critical characteristics, including stress, natural frequency, system harmonics, and fatigue life. Kibblewhite valve springs are made out of super-clean chrome-silicone valve spring wire and go through a heat treatment, stress-relief, and shot-peening process to allow Kibblewhite to bring you the best valve springs on the market in multiple styles, such as standard, high-lift, and beehive.
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$66.99
$36.50
Clearance
Dove Manufacturing offers chromoly steel retainers in a variety of lock styles and diameters. Valve spring retainers are responsible for keeping the correct pressure on the valve spring by locating it between the valve spring seat and the valve spring retainer itself. Order a set of 16 in the size needed for your application.
Not Yet Reviewed
$78.99
$39.50
Clearance
The unique full body design of these Howards Cams billet aluminum rocker arms offers less flex and will withstand 800-plus lbs. of spring pressure at over .800 in. lift. These rockers are 100 percent CNC-machined and are designed for more retainer and spring clearance than most other brands. They feature needle-bearing fulcrums and roller tips, centerless ground trunnions, centerless ground pins and rollers, and thick-walled adjusting nuts.
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$36.99
$22.50
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$23.50
Clearance
Dove Manufacturing offers jumbo-style valve locks in a variety of valve stem diameters. Machined from steel, these small 10-degree components are at the heart of competition valvetrains. If engines are exposed to over-revving, for instance, causing valve springs and even valve retainers to float, the valve locks ensure stability.
Not Yet Reviewed
$37.99
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$38.79
$26.50
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$27.50
Clearance
PRW Pro Series stainless steel rocker arms are manufactured from lightweight, premium quality 17-4ph stainless steel—a superior alloy high in nickel and chromium. This rigid, premium material provides outstanding fatigue resistance, and high-yield strength to help resist deflection. These rocker arms feature full-cage, friction-reducing needle bearings, and extra-large trunnions to spread out the load and reduce wear. Each rocker body is hand-polished, assembled, and carefully inspected to deliver the finest quality available to the racing and performance industry. Reduce your valvetrain mass with durable, lightweight PRW Pro Series stainless steel rocker arms. Order the set recommended for your specific vehicle and engine size. Features, items, and specs: * Wide assortment of ratios to suit almost any cam profile * Each set of 16 comes complete with PRW RockerLocs * Stud-mount design provides plenty of clearance for large diameter springs * CNC-machined pushrod cups * Heat-treated steel nose rollers and shafts resist severity of racing and minimize scrubbing
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$31.55
$22.50
Clearance
Continental overrunning alternator decoupler pulleys are vehicle-specific and cover a wide range of applications. Designed internally with a one-way clutch that enables the alternator to coast freely if belt speed suddenly decreases (engine shut down or transmission shift), the OAD-style pulleys also have a patented internal torsional steel spring that is tuned to each specific application. This technology absorbs engine vibration, allowing the belt to run calmly and smoothly. Select the Continental overrunning alternator decoupler pulley designed for your vehicle.
Not Yet Reviewed
$64.99
$48.50
Clearance
Put some tension on your belts with Dorman automatic belt tensioners. Rigorously tested for sustained performance by a team of product and quality engineers, Dorman's automatic belt tensioner assemblies are designed to provide proper tension to vehicle serpentine belts. They incorporate a damping design, torsion spring, and sealing system to ensure the proper functioning of many integral engine components. Replace worn-out or weak parts with Dorman automatic belt tensioners. The automatic belt tensioner should be replaced whenever the serpentine belt is replaced. Features include: * Quality tests include torque testing, spring-back testing, corrosion-resistance testing, and on-vehicle testing * Solid steel or aluminum construction for long-lasting durability * Highly resistant to heat and shock * Designed to fit properly every time
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$23.50
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$47.50
Clearance
Dayco No Slack automatic belt tensioners can resolve belt squeal, improper tracking, or an accessory that has stopped working completely. Featuring "flat spring" technology, these tensioners allow for an increase in torque to be transmitted to the belt when needed, compensating for stretch and wear, while maintaining constant tension throughout the life of your belt. They are built with tough, long-lasting cast aluminum housings and arms, steel locator pins, and arm plates. Engineered to outperform and outlast OEM parts, take up the slack with Dayco No Slack automatic belt tensioners.
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$71.99
$49.50
Clearance
Stop that high-pitched squeal! Motorcraft belt tensioners keep your belt snug at a fraction of dealer prices. They are direct OEM replacements and are application specific; not "one-size-fits-all". To minimize poor performance and premature failure, they are designed with less operating range variation under tension. Featuring cast-aluminum spring cases and arms to resist cracking and fatigue, their sealed-for-life bearings provide a long service life. Features include: * Meet Motorcraft 10-year/150,000-mile durability specifications * Designed to perform in harsh underhood environment * Easy to install * Recommended by Ford Motor Company
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$48.99
$38.50
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