These cylinder heads boost performance, reliability, and drivability for a wide range of builds.
Options include remanufactured GM LS2/LS6 heads for Gen III/IV swaps, cast aluminum SBC heads from DNA Motoring and Auto Dynasty for classic small-blocks, and plug-and-play Toyota 2AZ-FE and Chevy 1.4L complete assemblies that save installation time.
Every pick offers hardened seats, improved valve work, and correct fitment for long-term service.
The list focuses on practical, durable choices suited to daily driving or performance projects while keeping maintenance and installation straightforward.
| GM LS2/LS6 Gen III/IV Cylinder Heads Set of 2 |
| Remanufactured Reliability | Compatibility / Fitment: GM LS Gen III/IV applications (LS2/LS6) | Material / Construction: Remanufactured (cast) cylinder heads with assembled components | Valve Details / Valve Work: Valve seats installed as needed; new valve stem seals; valve guides replaced as needed; full valve job | VIEW LATEST PRICE | Read Our Analysis |
| DNA Motoring Aluminum Bare Cylinder Head for Chevy SBC |
| Lightweight Performance | Compatibility / Fitment: Chevy SBC 302/327/350/383/400 (≤1986) | Material / Construction: High-grade aluminum casting (bare head) | Valve Details / Valve Work: Intake valve 2.020″, exhaust valve 1.600″, bronze guides, hardened seats, three-angle seat machining | VIEW LATEST PRICE | Read Our Analysis |
| 2.4L Cylinder Head Assembly for Toyota 2AZ-FE |
| OEM Replacement | Compatibility / Fitment: Toyota 2.4L 2AZ-FE (Camry, Highlander, RAV4, Solara, Scion tC/xB) | Material / Construction: OEM-style assembled cylinder head (material per OEM) | Valve Details / Valve Work: 16-valve head (2.4L OEM valve configuration; preassembled) | VIEW LATEST PRICE | Read Our Analysis |
| Cylinder Head Assembly for Chevy Cruze Buick Encore 1.4L |
| Direct Fit Upgrade | Compatibility / Fitment: Chevy/Buick 1.4L (Cruze, Sonic, Trax, Encore; also listed Cruze 2.0L note) | Material / Construction: High-grade aluminum alloy (assembled) | Valve Details / Valve Work: Assembled head with valve components machined to OEM standards | VIEW LATEST PRICE | Read Our Analysis |
| Cylinder Head Assembly Passenger Side for 3.6L Vehicles |
| Fleet Replacement | Compatibility / Fitment: 3.6L V6 passenger-side fit for Dodge/Chrysler/Jeep/Ram models (various years) | Material / Construction: OEM replacement (material per OEM; cylinder head assembly) | Valve Details / Valve Work: Passenger-side assembly with valve train components per OEM spec | VIEW LATEST PRICE | Read Our Analysis |
| 1.4L Cylinder Head & Camshaft Assembly for Chevy Buick |
| Ready-to-Install | Compatibility / Fitment: Chevy/Buick 1.4L Turbo (Cruze, Sonic, Trax, Encore) | Material / Construction: Complete assembly (materials to match factory; aluminum implied) | Valve Details / Valve Work: Complete assembly with camshafts and valve seats pre-installed | VIEW LATEST PRICE | Read Our Analysis |
| Cylinder Head Assembly for Chevy Cruze/Sonic/Trax 1.4L |
| Value Replacement | Compatibility / Fitment: Chevy/Buick 1.4L (Cruze, Sonic, Encore, Trax) | Material / Construction: Machined (replacement assembly; aluminum implied) | Valve Details / Valve Work: Complete assembled head (valves/cams/valve seats machined/installed) | VIEW LATEST PRICE | Read Our Analysis |
| Complete Cylinder Head Assembly 1.4L for Chevy/Buick |
| Complete Swap | Compatibility / Fitment: Chevy/Buick 1.4L DOHC (Cruze, Sonic, Trax, Encore) | Material / Construction: Remanufactured to OEM spec (aluminum implied for 1.4L) | Valve Details / Valve Work: Complete DOHC head assembled (valves/cams/valve seats per OEM) | VIEW LATEST PRICE | Read Our Analysis |
| Auto Dynasty Aluminum Bare Cylinder Head for Chevy SBC |
| Performance Pair | Compatibility / Fitment: Chevy SBC 302/327/350/383/400 (≤1986) | Material / Construction: Aluminum construction (bare heads; pack of 2) | Valve Details / Valve Work: Intake valve 2.020″, exhaust valve 1.600″, hardened seats, bronze guides, three-angle seats | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
GM LS2/LS6 Gen III/IV Cylinder Heads Set of 2
Should you want reliable, high-performance heads for a Gen III or Gen IV LS build, these GM LS2/LS6 cylinder heads set of 2 fit that bill and make the job easier. You’ll get OEM remanufactured 243 assemblies with rocker arms, which saves time and worry during installation. The heads are fully disassembled and hot tank cleaned, then pressure tested to verify casting integrity. Valve seats, guides, and stem seals are replaced as needed, and a multi-angle valve job is done. Vacuum testing confirms good sealing. Every part is inspected and rebuilt to AERA standards, so you can install them with confidence.
- Compatibility / Fitment:GM LS Gen III/IV applications (LS2/LS6)
- Material / Construction:Remanufactured (cast) cylinder heads with assembled components
- Valve Details / Valve Work:Valve seats installed as needed; new valve stem seals; valve guides replaced as needed; full valve job
- Product Type (Bare vs Assembled / Complete):Set of 2 remanufactured assembled heads (includes rocker arms)
- Testing / Quality Assurance:Pressure tested; vacuum-tested seals; AERA-spec remanufacture
- Package / Quantity:Set of 2 heads (assembly)
- Additional Feature:AERA-spec remanufacturing
- Additional Feature:Pressure-tested castings
- Additional Feature:Includes rocker arms
DNA Motoring Aluminum Bare Cylinder Head for Chevy SBC
Should you’re restoring or upgrading a classic Chevy small-block and want a lightweight, performance-ready head that stays true to period specs, the DNA Motoring aluminum bare cylinder head is a smart pick. You’ll appreciate its fit for SBC 302, 327, 350, 383, and 400 engines made in 1986 and earlier. It keeps stock compression on 1970 and older engines, so you won’t chase odd tuning. With 2.020 inch intake and 1.600 inch exhaust valves, a 200 cc intake port and 68 cc chamber, it balances flow and combustion. Aluminum casting, bronze guides, and hardened seats add durability while cutting weight.
- Compatibility / Fitment:Chevy SBC 302/327/350/383/400 (≤1986)
- Material / Construction:High-grade aluminum casting (bare head)
- Valve Details / Valve Work:Intake valve 2.020″, exhaust valve 1.600″, bronze guides, hardened seats, three-angle seat machining
- Product Type (Bare vs Assembled / Complete):Bare aluminum cylinder head (single head)
- Testing / Quality Assurance:Machined three-angle seats; hardened seats and bronze guides (quality features)
- Package / Quantity:Single bare head (sold individually)
- Additional Feature:200 cc intake runners
- Additional Feature:68 cc chambers
- Additional Feature:Bronze valve guides
2.4L Cylinder Head Assembly for Toyota 2AZ-FE
In case you need a reliable direct replacement for a 2.4L Toyota 2AZ-FE engine, this L cylinder head assembly is made for owners who want worry-free performance and fitment, especially should you value OEM-style reliability and straightforward installation through a pro. You’ll get a 16-valve, 88.5 × 96 mm unit built at Cilipnsi and labeled 111010H010 with many cross references like 11101-28010. It’s tested for plug-and-play fit, weighs about 43 pounds, and ships in compact packaging. You should plan professional installation, claim two-year support provided needed, and expect long service life and calm driving reassurance.
- Compatibility / Fitment:Toyota 2.4L 2AZ-FE (Camry, Highlander, RAV4, Solara, Scion tC/xB)
- Material / Construction:OEM-style assembled cylinder head (material per OEM)
- Valve Details / Valve Work:16-valve head (2.4L OEM valve configuration; preassembled)
- Product Type (Bare vs Assembled / Complete):Complete assembled cylinder head (plug-and-play)
- Testing / Quality Assurance:Engineered testing; plug-and-play OEM-grade testing; strict QC
- Package / Quantity:Single assembled head (1 unit; 43 lb packaging)
- Additional Feature:Plug-and-play tested
- Additional Feature:OEM part number list
- Additional Feature:2-year seller support
Cylinder Head Assembly for Chevy Cruze Buick Encore 1.4L
Provided that you’re repairing or upgrading a 1.4L Chevy Cruze, Buick Encore, Sonic, or Trax and want a reliable, direct-fit cylinder head that saves time and worry, the Upgrade Cylinder Head Assembly from GDUKOP is built for you. You’ll get a high-grade aluminum alloy head machined to tight tolerances. It bolts on using factory mounting points so fit and function match OEM part numbers like 55573669 and 25193622. Testing backs its heat and wear resistance, so durability meets your expectations. You can install it yourself unless skilled or trust a pro. Packaging, weight, and return options make purchase simple.
- Compatibility / Fitment:Chevy/Buick 1.4L (Cruze, Sonic, Trax, Encore; also listed Cruze 2.0L note)
- Material / Construction:High-grade aluminum alloy (assembled)
- Valve Details / Valve Work:Assembled head with valve components machined to OEM standards
- Product Type (Bare vs Assembled / Complete):Upgrade complete cylinder head assembly (assembled)
- Testing / Quality Assurance:Precision machining and testing to meet/exceed OEM standards
- Package / Quantity:Single assembled head (1 unit; 34 lb packaging)
- Additional Feature:Direct bolt-on replacement
- Additional Feature:OEM-level machining
- Additional Feature:Professional/DIY installable
Cylinder Head Assembly Passenger Side for 3.6L Vehicles
In case you own a 3.6L V6 Dodge, Chrysler, Jeep, or Ram and want a reliable passenger-side cylinder head that drops in with minimal fuss, this Cylinder Head Assembly, Passenger Side is a strong choice because it matches a wide range of OEM and replacement part numbers and fits many model years from 2011 to 2016. You’ll get a part identified as 68141352AD that also cross-references many alternate numbers, so you can feel confident about fit. It fits passenger-side positions on Charger, Challenger, Grand Cherokee, Wrangler, Ram 1500, ProMaster, and more whenever years and engine match. Buy with confidence.
- Compatibility / Fitment:3.6L V6 passenger-side fit for Dodge/Chrysler/Jeep/Ram models (various years)
- Material / Construction:OEM replacement (material per OEM; cylinder head assembly)
- Valve Details / Valve Work:Passenger-side assembly with valve train components per OEM spec
- Product Type (Bare vs Assembled / Complete):Passenger-side complete cylinder head assembly
- Testing / Quality Assurance:OEM-fit assemblies matched to manufacturer part numbers (implied QC)
- Package / Quantity:Single passenger-side assembled head (1 unit)
- Additional Feature:Passenger-side specific
- Additional Feature:Wide OEM part crosslist
- Additional Feature:Covers many model years
1.4L Cylinder Head & Camshaft Assembly for Chevy Buick
Should you drive a Chevy Cruze, Sonic, Trax, or a Buick Encore with the 1.4L turbo, this complete cylinder head and camshaft assembly is one of the best choices for 2026 because it saves you time and frustration through arriving ready to bolt on and run. You’ll get a full head with cams and valve seats installed, matching factory form and function so fitment is straightforward. It covers 2011–2019 models and replaces numbers like 12703173 and 55573669. You’ll reduce installation hassle, keep cooling performance intact, and lower overheating risk while restoring reliable valve operation without guesswork.
- Compatibility / Fitment:Chevy/Buick 1.4L Turbo (Cruze, Sonic, Trax, Encore)
- Material / Construction:Complete assembly (materials to match factory; aluminum implied)
- Valve Details / Valve Work:Complete assembly with camshafts and valve seats pre-installed
- Product Type (Bare vs Assembled / Complete):Complete cylinder head with camshafts (assembly)
- Testing / Quality Assurance:Pre-installed components and assembled to factory fit (implied testing)
- Package / Quantity:Single complete assembled head with cams (1 unit)
- Additional Feature:Includes camshafts installed
- Additional Feature:Preinstalled valve seats
- Additional Feature:Reduces installation hassle
Cylinder Head Assembly for Chevy Cruze/Sonic/Trax 1.4L
Should you own a Chevy Cruze, Sonic, Trax, or Buick Encore with the 1.4L turbo and want a straightforward, reliable cylinder head replacement, this complete assembly is a great fit for owners and DIY mechanics who need a drop-in solution that saves time and reduces guesswork. You’ll get a machined GELUOXI unit listed under part numbers 25193622, 55573669, 55565291, 55573010, and 55573011. It fits 2011–2019 model years across Cruze, Sonic, Trax, and Encore. The head weighs 33.6 pounds and ships in a compact box. You can check ASIN B0FHV6GL4B and seller warranty details, and many listings offer a 30-day return.
- Compatibility / Fitment:Chevy/Buick 1.4L (Cruze, Sonic, Encore, Trax)
- Material / Construction:Machined (replacement assembly; aluminum implied)
- Valve Details / Valve Work:Complete assembled head (valves/cams/valve seats machined/installed)
- Product Type (Bare vs Assembled / Complete):Complete cylinder head assembly (replacement)
- Testing / Quality Assurance:Machined exterior and listed as replacement to OEM spec (quality control)
- Package / Quantity:Single assembled head (1 unit; ~33.6 lb)
- Additional Feature:Fully machined exterior
- Additional Feature:Multiple OEM cross-references
- Additional Feature:Lightweight (33.6 lb)
Complete Cylinder Head Assembly 1.4L for Chevy/Buick
Whenever you drive a Cruze, Sonic, Trax, or Encore with the 1.4L turbo engine and want a fast, reliable way to get your motor back to factory feel, this Complete Cylinder Head Assembly from WANKECAR is designed just for you. You’ll get a remanufactured 1.4L DOHC unit with dual VVT, built to OEM specs for fit and function. It fits 2011–2019 Cruzes, Sonics, Trax, and Encores, so double check part numbers like 55573669 or 25193622 before buying. The full assembly saves installation time and restores performance, and WANKECAR offers helpful after sales support whenever questions come up.
- Compatibility / Fitment:Chevy/Buick 1.4L DOHC (Cruze, Sonic, Trax, Encore)
- Material / Construction:Remanufactured to OEM spec (aluminum implied for 1.4L)
- Valve Details / Valve Work:Complete DOHC head assembled (valves/cams/valve seats per OEM)
- Product Type (Bare vs Assembled / Complete):Complete cylinder head assembly, DOHC (assembled)
- Testing / Quality Assurance:Remanufactured to OEM specifications; tested for fit and function
- Package / Quantity:Single assembled head (1 unit)
- Additional Feature:DOHC with dual VVT
- Additional Feature:Remanufactured to OEM
- Additional Feature:Ready-to-install assembly
Auto Dynasty Aluminum Bare Cylinder Head for Chevy SBC
In case you want lighter, stronger heads for a classic Chevy small block, the Auto Dynasty aluminum bare cylinder heads are a smart pick for builders working on 302, 327, 350, 383, or 400 engines from the pre-1986 era. You’ll like that they fit stock setups while enhancing airflow with 200cc intake runners and square ports that help power without forcing you to raise compression on older engines. The 68cc chambers and straight spark plug angle give reliable combustion. Aluminum construction cuts weight to 10.33 kg per head. They come as a pair, won’t accept Vortec intakes, and use 3-angle valve seats.
- Compatibility / Fitment:Chevy SBC 302/327/350/383/400 (≤1986)
- Material / Construction:Aluminum construction (bare heads; pack of 2)
- Valve Details / Valve Work:Intake valve 2.020″, exhaust valve 1.600″, hardened seats, bronze guides, three-angle seats
- Product Type (Bare vs Assembled / Complete):Pack of 2 bare aluminum cylinder heads
- Testing / Quality Assurance:Three-angle valve seats and hardened seats; bronze guides (manufacturing quality features)
- Package / Quantity:Pack of 2 bare heads (quantity 2)
- Additional Feature:Not Vortec-compatible
- Additional Feature:Pack of two heads
- Additional Feature:3-angle valve seats
Factors to Consider When Choosing Engine Cylinder Heads
When you pick a cylinder head, you’ll want to consider material and weight because aluminum and iron behave very differently and change how your engine handles. Also check port and valve size along with combustion chamber volume since those affect airflow, power, and compression in clear, measurable ways. Don’t forget valve guide and seat quality plus compatibility and fitment, because good machining and the right fit keep things reliable and save you time and money down the road.
Material And Weight
Because the head material affects more than just weight, you should consider about aluminum and cast iron as tradeoffs that change how the whole engine behaves. In the event you pick aluminum, you get much lighter heads, often 20 to 40 percent less per head. That cuts front-end mass and helps handling and throttle response. Aluminum also sheds heat faster, so combustion temps drop and you could need stronger head bolts or different torque steps. Cast iron gives you toughness and crack resistance at high heat. It adds mass that can calm vibration but shifts weight forward. Machining and repair also differ. Aluminum is easier to port but harder to weld. Iron tolerates heavy work. Reflect on rpm goals, balance, mounts, and the repair path whenever you choose.
Port And Valve Size
Choose port and valve sizes that match how you want the engine to feel and where you want its power band to live. You’ll pick larger intake ports and valves to chase high rpm power, but expect softer throttle response and less low end torque. Match exhaust valves to about seventy five to eighty percent of intake diameter to help scavenging and avoid choking flow. Watch port volume and cross section; big cc ports lower airflow velocity and hurt torque, while smaller ports keep low rpm response strong. Pay attention to valve seat width and multi angle cuts, since narrow, well angled seats enhance high rpm flow yet need proper material and sealing for durability. Finally, make sure cam profile and compression line up with your port and valve choices.
Combustion Chamber Volume
Should you want your engine to feel strong and predictable, start upon paying attention to combustion chamber volume, because even small changes in cc make a big difference in compression and power delivery. You’ll see chamber volume directly set static compression when combined with piston deck height and head gasket volume. Should you reduce cc, you raise compression and gain efficiency and low rpm punch. Should you increase cc, compression falls and you might avoid detonation on boosted or low octane fuel, though flame speed and torque can drop. Typical performance heads sit around 50 to 80 cc per cylinder, so choose based on displacement and goals. Whenever you modify heads, measure accurately and machine chambers evenly so cylinders stay balanced and idle smoothly.
Valve Guide And Seat Quality
Upon peeling back the valve cover, you’ll see parts that quietly decide how well your engine breathes and how long it will last, and valve guides and seats are right at the heart of that story. You want guides made from bronze or hardened steel, sized so valve stem play stays near 0.001 to 0.003 inches intake and 0.002 to 0.004 inches exhaust. That keeps oil control and timing accurate. Seats need multi-angle cuts and hardening for even contact and strong sealing. Check stem seals and fit so oil doesn’t seep into the combustion chamber. Match guide-to-stem clearance to your engine use, tighter for high RPM, looser for heavy duty. Finally, insist on pressure or vacuum seat tests and guide bore inspection after work.
Compatibility And Fitment
Upon fitting a new head to your engine, you’ve got to make sure it lines up with the block and all the parts that live on it, because a close match saves you time and heartache. You should initially confirm the head is built for your engine family, since bolt patterns, coolant passages, and oiling bosses must match. Next check valve count and cam compatibility so the valvetrain and timing system work together. Then inspect intake and exhaust port types, locations, and flange patterns to fit your manifolds. Also match combustion chamber volume and deck height to keep compression and piston to valve clearance correct. Finally verify sensor, injector, and accessory mounting points match your wiring and ancillaries to avoid major changes.
Performance Versus Durability
You checked fitment and mounting points, and now you’ll want to weigh how much performance you need against how long the head will last under real use. Should you want peak horsepower, aluminum heads with large ports, bigger valves, multi-angle valve work, and aggressive cam profiles deliver big gains. They also cut weight. But they thin metal and heat faster, so warping risks rise and valve seats wear sooner. Were you to prefer longevity, look for hardened seats, reinforced guides, bronze inserts, and pressure-tested castings. Those choices handle boosted intake and high compression better. Match valve size, seat treatment, head material, and cooling to daily driving or track use, and plan maintenance intervals. That way you get the power you want without unexpected downtime.
Testing And Certification
Should you pick cylinder heads, testing and certification tell you whether the part will actually do the job without surprise failures, so don’t skip this step. You’ll want pressure or vacuum testing to prove the casting has no cracks or internal porosity before you install it. Also check valve sealing and leak-down figures so valves and seats hold compression within tolerances. Compare documented torque specs and dimensional checks like deck flatness in thousandths, valve stem-to-guide clearance, and cam journal runout against OEM or AERA standards. For remanufactured heads, look for records of chemical cleaning and nondestructive testing such as magnaflux or dye-penetrant. Finally, confirm certification statements and warranty terms that cover machining, valve jobs, and pressure test results so you buy with confidence.
