Cylinder Heads, Valve Seats, Head Bolts, Top End Kits & More

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 for an even load distribution and accurate torque readings. With hundreds of models ready to ship, these cylinder head fasteners can be ordered for virtually any style engine.

4.82 out of 5 stars ( 807 )

ARP Pro Series Cylinder Head Bolt Kits

The Pro Series cylinder head bolts from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining, and are rated at a whopping 190,000 psi. The Pro Series are also available with hex and 12-point heads. All kits come complete with hardened parallel washers for even load distribution and accurate torque readings.

4.83 out of 5 stars ( 167 )

Trick Flow® GenX® 280 Cylinder Heads for GM LS3

Not Yet Reviewed

Summit Racing™ Cylinder Head Bolt Kits

Summit Racing™ offers cylinder head bolt kits that will keep consistent clamping force on your heads and not your wallet! Our kits contain strong, high-quality steel bolts with either a black oxide or zinc plated finish for added durability. Some kits also include washers. Stay on budget--let Summit Racing™ help complete your cylinder head installation with our selection of cylinder head bolt kits.

4.33 out of 5 stars ( 85 )

Summit Racing™ Precision Cast Cylinder Head

Summit Racing™ precision cast cylinder heads are made from tough A-356 aluminum alloy and feature Permanent Mold "As-Cast" technology. Port accuracy is unrivaled--meaning CNC porting is not required to provide superior flow. The result is CNC-ported performance at a fraction of the price! We start with precision CNC-finished faces and bolt holes for accuracy and fitment. American craftsmen expertly size and install the manganese bronze valve guides and interlocking ductile iron seats before finishing with a competition-grade valve job. From there, the decks are given a final pass for superior finish. They are finish-assembled in the USA with top-quality components like PAC Racing springs, fasteners, one-piece 21 4N stainless valves, machined locks, Viton® seals and chromoly steel retainers. The final result is the performance you want and Summit Racing™ quality you TRUST!

4.12 out of 5 stars ( 17 )

Chevrolet Performance LS3 Cylinder Heads

Fit any LS engine with Chevrolet Performance LS3 cylinder heads. Manufactured from aluminum alloy, these GM stock replacement heads are assembled with intake and exhaust valves, stem seals, retainers, springs, and locks. Great cylinder head airflow has always supplied the LS Series with exceptional performance. Retain that performance and save yourself time and worry by replacing your tired cylinder heads with Chevrolet Performance LS3 cylinder heads.

5.0 out of 5 stars ( 3 )

AFR 230cc LSX Mongoose Strip Cylinder Heads

Recommended for aggressive street/strip builds with displacements up to 427 c.i. operating at or below 7200 rpm. Capable of flowing 328 cfm at 0.650 in. lift with a 4.000 in. bore size. AFR street legal 230cc LS1 Mongoose strip cylinder heads are specifically designed for Gen III Chevy Corvettes, Camaros, and trucks. LSX cylinder heads offer unmatched flow performance and feature 2.080 in. intake and 1.600 in. exhaust valves with their ductile iron interlocking valve seats. Mongoose strip heads are available with 62cc, 65cc, and 72cc combustion chambers. Structural features like AFR's trademark 3/4 in. thick head deck, a must for blown and nitrous applications, reinforced rocker stud bosses, and thick wall runners provide unparalleled durability. An exclusive new modern combination chamber design with a double quench pad area helps the LSX generate huge low and mid-lift airflow numbers.

4.71 out of 5 stars ( 7 )

Summit Racing™ Extreme Duty Head Stud Kits

Summit Racing™ Extreme Duty cylinder head stud kits are engineered to withstand the stress and abuses that high-horsepower engines endure. These fastener kits come with all necessary studs, nuts, washers, lubricant, and instructions to ensure maximum performance and reliability. Order the hardware recommended for your year/make and engine application. Extreme Duty fasteners feature: * 190,000 psi tensile strength minimum * High-strength chromoly steel utilized for all products * Precision manufacturing processes ensure consistent product performance * All studs are twice straightened to guarantee straightness * Threads are rolled after heat treatment for high strength * Tensile and yield strength tested after thread rolling * Uniformly applied black oxide surface finish * Anti-rust oil coating to protect fasteners from corrosion

2.5 out of 5 stars ( 2 )

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 )

Trick Flow® GenX® 225 Cylinder Heads for GM LS2

Trick Flow GenX® 225 cathedral port cylinder heads are fully CNC-machined to significantly increase the performance of 6.0L LS2 engines. Trick Flow engineers altered the valve angles from 15° to 13.5° to decrease valve shrouding, increase mid-lift airflow, and improve rocker arm-to-valve cover clearance. Top-of-the-line CNC Competition Ported runners have a premium high resolution surface finish for maximum flow and performance. The spark plugs were relocated in the CNC-profiled combustion chambers to enhance mid-lift airflow and increase the rigidity of the casting for extreme horsepower applications. Material was added at the rocker arm mounting points to increase high-rpm valvetrain stability. Trick Flow GenX 225 cylinder heads are emissions-legal under CARB E.O. #D-747 for 1997-present GM vehicles with 4.8L, 5.3L, 5.7L, and 6.0L engines. They are available fully assembled or as bare castings. Sold individually.

5.0 out of 5 stars ( 3 )

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 ( 221 )

Trick Flow® GenX® 280 HD Cylinder Heads for GM LS3

Trick Flow® GenX® 280 HD cylinder heads offer an unbeatable combination of performance and durability, making them the perfect upgrade for your high-performance GM LS3 engine build. Assembled with Manley Severe Duty stainless steel valves, these heavy-duty versions of the standard GenX® 280 heads can withstand the added heat, stress, and abuse dealt by big power adders. That makes them the ideal choice for engines using superchargers, turbochargers, or nitrous. GenX 280 HD cylinder heads have fully CNC-profiled combustion chambers and CNC Competition Ported square port runners with a premium high resolution surface finish that guarantees dimensional accuracy and balanced flow from port-to-port for maximum power potential. The valve angles have been modified from the stock 15° to 12° to increase piston-to-valve clearance and allow the use of larger camshafts. The coolant holes through the head decks were designed to ensure compatibility with all LS head gasket and engine block combinations. The 6-bolt-per-cylinder mounting pattern for GMPP LSX and other aftermarket blocks increases clamping force to prevent head gasket failure, cylinder distortion, and other issues that plague the factory 4-bolt design. Trick Flow® GenX® 280 HD heads have LS3 port locations to work with all LS3-style intake manifolds and LS9/LSA blower assemblies. They must be used on engines with 4.000" or larger bores. Cylinder heads are available fully assembled or as bare castings. Sold individually.

Not Yet Reviewed

ARP High Performance Series Cylinder Head Bolt Kits

ARP High Performance Series head bolt kits are tough. They are rated at 180,000 psi--15 percent stronger than Grade 8 fasteners. They come available with a reduced wrenching hex head or 12-point head that help eliminate the need for valvetrain removal when re-torqueing cylinder heads.

4.8 out of 5 stars ( 1050 )

Trick Flow® GenX® 220 Cylinder Heads for GM LS2

Trick Flow GenX® 220 cylinder heads for GM 6.0L LS2 engines are a great value in GM LS performance. The cathedral port heads incorporate features of Trick Flow's fully CNC-ported LS heads in a more affordable "Fast As Cast®" version that flows nearly as much air as Trick Flow's competition ported heads. The special Fast As Cast runner design duplicates the port shape and profile of fully CNC-ported runners, resulting in near-CNC-ported performance for the same price as regular cast cylinder heads. Other features include shallower 13.5° valve angles to decrease valve shrouding and increase mid-lift airflow, relocated spark plugs, CNC-profiled combustion chambers with port-to-valve seat blending (bowl blending), improved rocker arm/ valve cover clearance, and a rigid casting design. Trick Flow GenX 220 cylinder heads are emissions-legal under CARB E.O. #D-747 for 1997-present GM vehicles with 5.7L and 6.0L engines. They are available fully assembled or as bare castings. Sold individually.

4.75 out of 5 stars ( 4 )

ACDelco GM Genuine Parts Cylinder Heads

Great cylinder-head airflow has been a key enabler of the LS-Series exceptional performance. ACDelco GM Genuine Parts cylinder heads deliver those power building attributes to you with a range of production-style aluminum heads. GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors. From the LS6 heads for smaller-displacement engines to LS7 style heads for 427-inch-and-larger combinations, these aluminum cylinder heads benefit from Chevrolet Performance's extensive research and development program, providing maximum airflow. Many assembled heads use premium machining and materials, including CNC finishing and porting, along with lightweight, hollow-stem valves, sodium-filled exhaust valves, and on some heads lightweight titanium intake valves.

Not Yet Reviewed

Gator Fasteners Heavy-Duty Head Stud Kits

Whether you're building a tow rig, race truck, or just want to keep your daily driver on the road for the long haul, you need to upgrade your head bolts with Gator Fasteners heavy-duty head stud kits. Gator head studs have a much higher strength and will not stretch like the factory bolts, helping to keep your truck from popping head gaskets. Designed for stock to moderately built engines. Gator studs are manufactured with 8740 material with an added proprietary element and black oxide finished. They are rated at 220,000 psi tensile strength, providing the clamping force required to keep cylinder heads from lifting due to higher combustion pressures. Choose the head stud kit designed for your truck.

5.0 out of 5 stars ( 2 )

Chevrolet Performance Head Bolt Kits

These Chevrolet Performance cylinder head bolt kits are designed for use with your GM heads. Everything is included to properly complete your cylinder head installation.

4.47 out of 5 stars ( 53 )

ARP Camshaft Tower Stud and Bolt Kits

Camshaft positioning is especially critical on overhead cam engines, and ARP camshaft tower stud and bolt kits make sure that cam towers are properly secured. These durable bolts and studs are made from 8740 chromoly steel, with all of the threads rolled after heat-treating to ensure optimum fatigue strength.

5.0 out of 5 stars ( 5 )

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.

4.17 out of 5 stars ( 36 )

FLOTEK 276cc LS3 Cylinder Heads

FLOTEK 276cc LS3 cylinder heads feature as-cast high-flow intake runners that flow significantly better than the stock LS3 heads. The ports are in the stock location, so no special valvetrain parts or rocker arms are required. These heads are 15 degree, which is the same as the stock cylinder heads—no special pistons are required. They will work on any LS block that has a 4 in. bore or larger. FLOTEK 276cc LS3 cylinder heads combine high performance and high quality at a value price. Select from bare or assembled models.

3.0 out of 5 stars ( 2 )

Chevrolet Performance L92 Cylinder Heads

Chevrolet Performance L92 cylinder heads are production-style aluminum heads that provide great airflow and exceptional performance. Features include: * Manufactured from 319-T5 aluminum alloy * Aluminum performance head * Fits any LS family engine with 4.000 in. bore or larger * Solid stem intake and exhaust valves * .510 in. Max Lift valve springs * As-cast L92-style intake ports * D-shaped exhaust ports * As-cast combustion chambers * Angled spark plugs (14mm; 5/8 in. hex; 3/4 in. reach; taper-seat plugs) * 15 degree valve angle * Bolt-down-type rocker arms * Center-bolt valve cover hold-downs

Not Yet Reviewed

AFR 224cc Black Hawk Gen 3 Hemi Cylinder Heads

Looking to increase the performance of your Gen III-powered vehicle? AFR 224cc Black Hawk Gen 3 Hemi cylinder heads are to be offered in as-cast and fully CNC ported versions, either assembled or as no-parts (bare) heads to provide the power and performance Mopar enthusiasts crave. Manufactured using A356 aluminum and permanent-mold technology, AFR castings are second to none. Assembled pairs will come with high-quality components, such as PAC Racing springs, Titanium (CNC versions) or stainless steel retainers, AFR valves, and Viton® valve seals.

5.0 out of 5 stars ( 1 )

Chevrolet Performance Cylinder Head Pins

Chevrolet Performance cylinder head pins offer accurate alignment. Precise positioning of your cylinder heads prevents leaks and keeps your engine efficient. And who knows your GM ride better than Chevrolet Performance? Maintain the quality performance of your ride with genuine GM cylinder head pins.

4.83 out of 5 stars ( 18 )

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 )