HONDA Cylinder Heads Engines & Components

ARP Pro Series Cylinder Head Studs

ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. ARP Pro Series kits are also available with 12-point nuts and all studs come complete with hardened parallel washers. Some applications are undercut where needed to provide even clamping and load distribution with accurate torque readings. With hundreds of models ready to ship, these cylinder head fasteners can be ordered for virtually any style engine.

4.81 out of 5 stars ( 842 )

$114.99

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$169.99

ARP High Performance Cylinder Head Stud Kits

ARP high performance cylinder head stud kits are precision centerless-ground and thread-rolled to Mil-S-8879 specs. A black oxide finish protects them from wear and corrosion, and ARP throws in hardened parallel washers for uniform load distribution and accurate torque readings. Keep your cylinders mounted securely with a set of ARP high performance cylinder head studs; order the hardware recommended for your year/make and engine application

4.38 out of 5 stars ( 37 )

$199.99

On Sale

Cylinder Works 4-Stroke Cylinder Heads

Cylinder Works 4-stroke cylinder heads typically include cam caps and bolts, C630 (nickel/aluminum/bronze) valve seats and guides. For competition valve jobs, these replacements have shortened guides to accept higher lift cams. For your off-road motorcycle rebuild, a 4-stroke cylinder head kit from Cylinder Works is the place to begin. Order the model recommended for your bike application.

3.67 out of 5 stars ( 3 )

$504.99

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$529.21

$454.49

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$492.17

SpeedFactory Racing 4140 Cylinder Head Stud Kits

The SpeedFactory Racing 4140 cylinder head stud kits are designed to provide superior clamping force, preventing cylinder head lift and head gasket failure in high-performance, forced induction (turbo/supercharged) Honda®/Acura® engines. The studs maintain a tight seal on the cylinder head under extreme boost, crucial for preventing combustion gases from escaping. The 4140 steel head studs resist stretching far better than OEM head bolts, essential for high-horsepower reliability. Each kit includes forged nuts and washers designed to distribute clamping loads evenly across the engine block. Select the kit for your application needs. Key features: * 210,000 psi tensile rating * Hex broach on the top of the stud for ease of installation and a dog point design for superior preload * Oversized forged 12-point nuts and hardened parallel ground washers for superior load distribution compared to smaller nuts and washers * Direct drop-in replacement for OEM head bolts * Studs feature a corrosion-resistant black oxide coating

Not Yet Reviewed

$142.49

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$177.54

Mahle Original Head Bolt Kits

Mahle Original fasteners deliver the clamping force necessary to seal the combustion chambers, as well as the oil and coolant passages--even at extreme temperatures and pressures. On your next cylinder head reassembly, use bolts designed to exact specifications for the best sealing solution--Mahle Original head bolt kits.

4.24 out of 5 stars ( 42 )

$49.99

PRW Cylinder Head Stud Kits

PRW cylinder head stud kits offer heavy-duty fasteners, along with 12-point nuts and washers for Ford Powerstroke engines. These replacement studs are machined from 4135 chromoly steel and finished with a black oxide. They provide superior clamping power, compared to the stock bolts—which will solve the problem of head gasket failure caused by increased cylinder pressure.

5.0 out of 5 stars ( 1 )

$80.34

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$160.70

Enginetech Cylinder Head Fasteners

Enginetech cylinder head fasteners are engineered for reliable, high-performance sealing in today's demanding engine applications, delivering consistent clamping force and long-term durability you can trust. These engine cylinder head bolt sets are manufactured to meet or exceed OE specifications, and are precision-threaded and rigorously tested to ensure proper torque retention, reduced risk of head gasket failure, and dependable performance under extreme heat and pressure. They are ideal for professional engine builders and repair technicians, providing an easy, accurate installation experience while helping to extend engine life and maintain optimal combustion integrity across a wide range of both domestic and import vehicles. Order the fasteners for your application.

3.67 out of 5 stars ( 3 )

$22.99

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$75.99

Enginetech Plain ID Valve Guides

Enginetech's Plain ID valve guides are premium-grade, cast iron replacement guides designed for high durability and OEM-quality performance. They are manufactured to exact specifications for reliable valve support. As "Plain ID" valve guides, they feature a smooth inner diameter, offering a durable and cost-effective alternative to spiral-reamed or bronze options, typically requiring final sizing and honing after installation. Family owned and operated since 1982, Enginetech is the engine builder's source for high-quality engine parts. Enginetech offers a complete line of products for virtually every engine, including import and domestic engines.

Not Yet Reviewed

$7.99

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$12.99

Kibblewhite Valve Guides

Refresh your ride with these Kibblewhite valve guides. These valve guides are designed to meet or exceed manufacturer's specifications for quality and are constructed from only the finest materials available for the job. Their tight tolerances and superior material mean that these valve guides will outperform and outlast their stock equivalents, making them perfect for stock or performance rebuilds. Don't trust your engine's health to lesser components--upgrade to these Kibblewhite valve guides for peace of mind after your next build.

5.0 out of 5 stars ( 4 )

$15.92

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$37.93

SpeedFactory Racing Cylinder Extreme-Duty Head Stud Kits

The SpeedFactory Racing cylinder extreme-duty head stud kits are engineered for high-performance engines, specifically to prevent cylinder head lift and blown head gaskets in high-boost (30+ psi) drag racing applications. Made from ultra-strong L19 material, these studs offer more clamping force and strength than standard 8740 chromoly studs, ensuring engine reliability. Each kit includes forged nuts and washers designed to distribute clamping loads evenly across the engine block. Key features: * High-strength (260,000 psi tensile strength) material keeps the cylinder head securely clamped to the engine block under extreme combustion pressures * Designed for engines producing high boost (typically 30 psi) to help prevent gasket failures * Extreme Material Strength—L19 material outperforms standard 8740 chromoly steel, providing superior clamping force * Easy Installation—head studs feature a hex broach on the top, allowing for simple installation without removing the engine * Superior Load Distribution—these kits include oversized nuts to distribute load more evenly * They are a direct drop-in replacement for OEM head bolts

Not Yet Reviewed

$396.00

Kibblewhite Cylinder Studs

Kibblewhite cylinder studs are manufactured from tough steel, offering high-tensile and yield strengths, with just the right amount of ductility to resist fatigue and stress. These studs are ground to ensure a concentric shape that doesn't interfere with the head or the correct seating of the head nut. Don't compromise your rebuild--use Kibblewhite cylinder studs to hold everything together!

Not Yet Reviewed

$136.54

Enginetech Spiral ID Valve Guides

Enginetech Spiral ID valve guides are premium cast iron or bronze aftermarket guides featuring an internal spiral groove (rifling) designed to enhance lubrication by holding oil, which helps reduce friction and prevent valve seizure. These Spiral ID valve guides are designed to meet or exceed OE specifications for durability, featuring precise, U.S.-machined finishes. Family owned and operated since 1982, Enginetech is the engine builder's source for high-quality engine parts. Enginetech offers a complete line of products for virtually every engine, including import and domestic engines.

Not Yet Reviewed

$14.99

VEGE Remanufactured Cylinder Heads

VEGE Remanufactured cylinder heads are a popular choice for performance and value. With its advanced and efficient production process, backed by more than eight decades of experience, VEGE is able to supply remanufactured cylinder heads with a level of quality that equals that of new OEM products—at extremely competitive prices. The rebuilt cylinder heads are carefully inspected, cleaned, and then fully machined and assembled with top-of-the-line components. Unless otherwise noted, the assemblies include a cast iron or aluminum cylinder head, intake and exhaust valves, valve springs, retainers, locks, stem seals, rocker arm studs, and more. Many heads include rocker arms. Nearly a thousand models are available, for fitment on countless applications.

3.87 out of 5 stars ( 47 )

$572.99

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$694.99

Fel-Pro Headbolt Kits

Fel-Pro headbolt kits contain a complete set of the highest quality headbolts and hardened washers available. They're cold-formed to ensure molecular integrity, then heat-treated prior to thread rolling and machining. Reduced-diameter bolt heads eliminate the need for valvetrain removal and facilitate cylinder head re-torquing. The bolts are available in a variety of head styles for fitment on specific vehicle and cylinder head applications.

4.51 out of 5 stars ( 228 )

$77.99

Enginetech Valve Seats

Enginetech valve seats are precision-machined, hardened metal rings pressed or cast into a cylinder head to form the critical sealing surface for an engine's intake and exhaust valves. They maintain the airtightness of the combustion chamber and help transfer heat away from the hot valves. These valve seats are available in a variety of diameters, quantities, and finishes such as chrome nickel, powdered metal, and nickel-cobalt. Additional details: * Crafted from highly durable materials to withstand the extreme temperatures and repetitive impacts of high-stress environments * Heat dissipation: They play a major role in engine cooling by drawing up to 75 percent of the heat from the exhaust valves and conducting it safely into the cylinder head * Precision fitment: Enginetech designs their seats to exact factory specifications or oversized dimensions, making them highly popular for engine rebuilding, vehicle restoration, and performance applications

Not Yet Reviewed

$6.99

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$18.99