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HUMMER H2 Camshafts & Valvetrain

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Results 1 - 24 of 58

Melling Factory Hydraulic Roller Lifters

Melling factory replacement hydraulic roller lifters are designed and built to get the job done while ensuring efficient performance and quiet valve train operation. They are perfect for when you're ready to freshen up your engine. Melling factory hydraulic roller lifters are manufactured from the finest materials and designed for the proper fit and long dependable lifter life.

4.2 out of 5 stars ( 20 )

$24.99

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 )

$52.99

$194.99

Sealed Power Hydraulic Roller Lifters

Your valves will open more quickly from a fully closed to a fully opened position with a roller setup, compared with conventional flat lifters. With Sealed Power Hydraulic roller lifters you will notice higher performance, quieter engine operation, and more horsepower. They also provide proper vacuum and idling capabilities.

4.27 out of 5 stars ( 26 )

$18.99

COMP Cams Max-Lift BSR Shaft Rocker Systems

COMP Cams introduces another industry first with their Max-Lift BSR shaft rocker systems, a bolt-in bushed shaft rocker system that increases valve train stiffness helping your engine achieve higher levels of performance. By tying all eight rocker arms together on a single shaft that fits in the stock rocker stand, COMP Cams has found a way to improve valve train dynamics, increase valve train stiffness and reduce deflection under extreme loads. The increased valve train stiffness created the BSR rocker system allows your existing cam to act like a larger camshaft by transferring more of the motion to the valve or the use of more aggressive, higher lift cams without losing control of the valve train. Take complete control of your valves with the COMP Cams Max-Lift BSR shaft rocker system.

3.67 out of 5 stars ( 3 )

$774.95

Cloyes Race Billet True Roller Timing Sets

Cloyes Race Billet True Roller timing sets provide race-ready performance! These sets feature sprockets machined from premium billet steel on state-of-the-art CNC equipment to ensure the highest quality and consistency. The sprockets are induction-hardened and oil-quenched by Cloyes' in-house, multi-stage heat treat process. Sets include a Cloyes Premium True Roller chain—which features full roller action and superior strength. Side plates are cut and shaved from high-strength steel and are heat-treated for maximum fatigue resistance. Their .250 in. rollers are cold-rolled and hardened to exacting standards, increasing load and rpm capabilities. Cloyes Race Billet True Roller Speed Sets are offered with a choice of 3-or 9-keyway crank sprockets, providing multiple valve timing settings. These sets are hand-matched to qualify center distance and runout, ensuring the best performance with every set!

4.57 out of 5 stars ( 96 )

$183.99

$233.99

Dorman Timing Covers

Dorman timing covers are a direct replacement that matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards. Features: * Direct replacement - this engine timing cover matches the fit and function of the original equipment cover. * Durable construction - this part is specifically designed to withstand extreme underhood temperatures for a long service life. * Cost-effective solution - offers original equipment quality at a competitive price. * Quality tested - this part has undergone extensive testing to ensure a quality fit and long service life.

3.64 out of 5 stars ( 115 )

$41.95

$89.95

Melling Camshaft Thrust Plates

Keep your camshaft from wandering with Melling camshaft thrust plates. These solid steel plates protect your engine investment by returning your timing back to the desired specifications. Proper positioning of your camshaft is crucial. Don't let your cam walk--replace worn camshaft thrust plates with new ones from Melling.

4.58 out of 5 stars ( 38 )

$30.99

COMP Cams Short Travel XD Hydraulic Roller Lifters

COMP Cams short travel XD hydraulic roller lifters offer the advantages of both light pre-load and reduced oil volume, producing the most stable and highest-revving hydraulic lifter available. The XD versions feature heavy-duty tool steel pushrod seats. This adds strength and durability in extreme-duty applications, such as turbo drag cars and offshore powerboats. Certain engines respond better to a light lifter pre-load because it recovers more quickly from any bad harmonics in the valvetrain. Others work better with a heavy pre-load because oil volume is reduced under the plunger, which increases lifter stiffness. Now you have the best of both—with COMP Cams short travel XD hydraulic roller lifters. Order the model designed for your vehicle and engine application.

3.5 out of 5 stars ( 4 )

$969.95

Melling Pushrods

Melling OEM replacement pushrods are perfect for stock rebuild or mild performance applications where open spring pressures do not exceed 300 lbs. They're manufactured from steel tubing and work well with factory or aftermarket rocker arms. These units are available in a wide range of lengths and other options for fitment on countless makes and models. When you're replacing your valvetrain components, trust Melling pushrods to keep your engine running smoothly.

4.51 out of 5 stars ( 73 )

$4.99

COMP Cams Sportsman Solid Roller Lifters

COMP Cams Sportsman solid roller lifters feature premium-quality, high-value components designed for sportsman and professional racing, along with high-end street machines. They're available in both needle-bearing and bushing configurations. Each design features two pressurized EDM oil feeds, as well as an edge-orifice feed to the wheel. This delivers a more reliable oil feed than most competing options. COMP Cams Sportsman solid roller lifters are also designed with a shallower oil band than competitors' versions for increased strength and rigidity, while internal machining helps to reduce weight. The body utilizes a skirted wheel that strengthens the lifter ears, and the skirt also provides more contact area with the lifter bore for further lifter stabilization. In addition, staked axles eliminate clips and provide robust axle retention. This feature increases the stiffness of the lifter ears and helps to prevent the ears from spreading. The COMP Cams Sportsman solid roller lifters are built from 8620 premium steel for increased strength and wear resistance and they feature a captured, stainless steel link bar design. The lifters also utilize a tapered and slotted link bar tower for reduced weight and improved aesthetics. Choose the size and options tailored for your engine application.

4.78 out of 5 stars ( 9 )

$888.95

Melling Stock Replacement Cam and Lifter Kits

Restore your engine to its true power potential with Melling's stock replacement cam and lifter kits. They're perfect for either replacement or stock rebuilds. Melling cam and liter kits also include a matched set of lifters so you won't have to worry about mismatched parts during installation.

4.2 out of 5 stars ( 20 )

$684.99

Cloyes Heavy-Duty Timing Sets

Cloyes heavy-duty timing sets supply everything you need from a timing chain—performance and reliability. The cam sprockets are machined from cast iron with billet steel crank sprockets. Cloyes heavy-duty timing sets are available in single or double roller versions and offer .200 in. (for small blocks) or .222 in. (for big blocks) diameter double roller chains. Cloyes heavy-duty timing sets are considered the industry's most reliable workhorses. They're engine- or model-specific; order the set designed for your application.

4.46 out of 5 stars ( 292 )

$42.99

COMP Cams Thumpr LS Camshaft Packages

COMP Cams Thumpr LS camshaft packages come as a complete valvetrain parts package that is matched for specific LS applications and desired performance. COMP Cams engineers have spent countless hours testing and creating valve train component combinations that are perfectly matched for maximum horsepower and dependability, as well as creating that wildly popular Thumpr sound in GM LS applications. Thumpr camshaft packages can add anywhere from 60 to 110 hp (depending on the application). COMP Cams Thumpr LS camshaft packages include: * Thumpr LS camshaft * Pushrods * Valve springs * Retainers * Valve locks * Spring seats * Valve seats

Not Yet Reviewed

$865.95

Fel-Pro Camshaft Thrust Plates

Fel-Pro camshaft thrust plates offer 100 percent vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust. These steel plates feature an O-ring seal and includes screws for installation.

Not Yet Reviewed

$42.99

Melling Timing Chain Dampener Brackets

Melling timing chain dampener brackets are manufactured from high-quality materials for consistent durable wear. They're precision engineered for optimum fit and function, and designed for long-life and worry-free performance.

3.69 out of 5 stars ( 13 )

$54.99

$66.99

COMP Cams Ultra Gold ARC Series Aluminum Rocker Arms

Designed specifically for high performance street and race engines, COMP Cams Ultra Gold ARC Series aluminum rocker arms are precision CNC-machined to strict tolerances. They incorporate modern technology and design features to create the most advanced aluminum rocker arms available. Proven to withstand extremely aggressive spring pressure, the COMP Cams Ultra Gold ARC Series aluminum rocker arms use their CNC-machined aluminum design for high quality and the ultimate in ratio accuracy.

4.63 out of 5 stars ( 112 )

$688.95

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.

4.66 out of 5 stars ( 32 )

$448.95

$459.95

COMP Cams Ultra Pro Magnum Rocker Arms

Utilizing years of valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (dyno and Spintron), COMP Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that Ultra Pro Magnum rocker arms not only lived up to the lofty standards of their predecessor, but also took stud mount rocker performance, stability, and value to a whole new level. The most noticeable advancement centers around their nearly unbreakable investment cast 8650 chromoly body. The arched, web-like design delivers a nearly 29 percent increase in strength and rigidity, while reducing the moment of inertia and optimizing the dynamic balance. The resulting rockers maximize lift and valvetrain control at high rpm. The increased retainer and valve spring clearances of the new design enable the use of large-diameter valve springs, retainers, and locks, without clearance or fitment issues. The new black oxide exterior finish offers a distinctive appearance, along with long-term corrosion resistance. The COMP Cams Ultra Pro Magnum rocker arms feature an oversized trunnion and precision-sorted needle bearings designed for use with high-load valve springs. These unique rockers also feature hardened roller tips for reduced friction and elimination of the valve stem "side loading" that causes premature valve guide wear.

4.76 out of 5 stars ( 200 )

$51.95

$541.95

Cloyes Replacement Timing Chains

Restore prime performance to your engine with the ultra-durable construction of Cloyes OE replacement timing chains. They're precisely engineered with high-quality materials for optimum chain-to-tooth fitment and timing. Cloyes has been manufacturing and marketing timing components for nearly a century and is a leading aftermarket manufacturer of timing drive components. Features include: * Made from high-quality materials for durability * Precisely engineered for optimum chain-to-tooth fitment and timing * Direct-fit for straightforward installation * Available for wide range of vehicle-specific applications

4.35 out of 5 stars ( 20 )

$25.99

$219.99

Cloyes Hex-A-Just Z-Racing Timing Sets

Cloyes Hex-A-Just Z-Racing timing sets allow the engine builder everything he needs to quickly and easily adjust cam timing to maximize engine output. They feature a complete set of chains and sprockets for flexible timing adjustments to set the cam timing exactly as desired for improved performance and durability. The Z Series chain design increases overall strength and is the no-compromise offering for serious racing engines.

5.0 out of 5 stars ( 3 )

$357.99

Melling Replacement Timing Chains

Melling replacement timing chains are available in several styles—single or double roller, link belt, or non-roller—for fitment on countless year/make/model vehicles. A key link in your engine, timing chains synchronize and transfer energy from the crankshaft to the camshaft, controlling when the intake and exhaust valves open. These solid-bushing chains offer a true bearing surface that rolls with the sprockets, eliminating chain stretch. Order the replacement designed for your specific application.

4.33 out of 5 stars ( 3 )

$17.99

Cloyes Hex-A-Just Timing Sets

With Cloyes Hex-A-Just timing sets, infinitely adjustable cam timing is as simple as turning an Allen wrench. Consisting of SAE 1144 billet steel cam and crank sprockets and a true roller timing chain, these timing sets use a special hex-head bushing installed on your cam's dowel pin. This bushing lines up with degree marks on the cam sprocket. You can adjust timing in fractions of a degree (as much as +/-6 degrees) by loosening the cam bolts and turning the bushing with an Allen wrench. Cloyes Hex-A-Just timing sets install under your stock timing cover and can be used in align-bored blocks. Order the model designed for your vehicle and engine application.

4.65 out of 5 stars ( 34 )

$215.99

$295.99

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.

5.0 out of 5 stars ( 2 )

$192.95


$106.95

$226.95

ACDelco GM Genuine Parts Camshaft Sprockets

ACDelco offers GM Genuine Parts camshaft sprockets for a wide range of cars, trucks, and vans. These engine timing OE replacement parts are machined from nickel steel to precise specifications. They're available in different diameters and tooth-counts. Stay with the parts brand your General Motors vehicle came with—to ensure the quality and performance will meet your expectations. Order the sprockets designed to fit your application.

5.0 out of 5 stars ( 1 )

$34.99

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