fits make: Harley. year: 1966-84.

( Brand: S-s Cycle ), ( Manufacturer Part Number: 106-0420 ), ( Part Type: Plug Cylinder Head ), ( Surface Finish: Natural ), ( Country/region Of Manufacture: United States )
The 106-0420 3-5 Big Dual Plug Cylinder Heads for Harley-Davidson models from 1966 to 1984, specifically for BT series 3-5-8 engines, are a testament to the fine craftsmanship and performance enhancement capabilities of aftermarket parts. These cylinder heads are designed to provide an upgrade to your Harley-Davidson's engine, enhancing its power output and overall performance.
The 106-0420 Big Dual Plug Cylinder Heads feature a unique design with dual spark plugs per cylinder. This design allows for improved combustion, resulting in a more efficient and powerful engine. The larger combustion chambers provide more room for the fuel-air mixture, which in turn, allows for a larger flame kernel. This results in a more complete combustion cycle, leading to increased power and torque.
The cylinder heads are made from high-quality aluminum alloy, ensuring durability and lightweight performance. The engine's heat dissipation is improved with the inclusion of larger cooling fin surfaces, which help to keep the engine temperature at an optimal level even under heavy load conditions.
The 106-0420 Big Dual Plug Cylinder Heads also feature improved valve seats and valve guides, ensuring a tight seal and reduced leakage. This results in improved engine efficiency, reduced fuel consumption, and lower emissions. The heads are also equipped with a high-performance intake and exhaust port design, which allows for a smoother airflow in and out of the cylinders, further enhancing engine performance.
In conclusion, the 106-0420 3-5 Big Dual Plug Cylinder Heads are a high-quality performance upgrade for your Harley-Davidson engine. With their improved combustion, heat dissipation, and engine efficiency, these cylinder heads will provide your bike with increased power, torque, and overall performance. Whether you're a weekend cruiser or a hardcore racer, these cylinder heads are a worthy investment for any Harley-Davidson enthusiast.
Pros of buying 106-0420 3-5 big dual plug cylinder heads for Harley Davidson models from 1966 to 1984:1. Enhanced Performance: These cylinder heads are designed to provide improved engine performance, including increased horsepower and torque.
2. Durability: These heads are built to last and are known for their robustness, making them a good investment for long-term use.
3. Easy Installation: The 106-0420 cylinder heads are designed to fit most Harley Davidson engines without requiring extensive modifications, making the installation process relatively straightforward.
4. Improved Air/Fuel Mixture: The dual plug design allows for a more efficient air/fuel mixture, which can lead to improved combustion and engine efficiency.
Cons of buying 106-0420 3-5 big dual plug cylinder heads for Harley Davidson models from 1966 to 1984:1. Cost: The cost of these cylinder heads can be significant, and the price can vary depending on the source and the condition of the heads.
2. Compatibility: While the 106-0420 cylinder heads are designed to fit most Harley Davidson engines, there may be some compatibility issues with certain models or engine configurations.
3. Skill Level: Installation of these cylinder heads may require some mechanical expertise, and improper installation can lead to engine problems.
Conclusion:If you are looking to improve the performance of your Harley Davidson engine, the 106-0420 3-5 big dual plug cylinder heads can be a good investment. However, it's important to carefully consider the cost and compatibility issues before making a purchase. Make sure to research the specific model of your Harley Davidson engine and verify that these cylinder heads are a good fit for your bike. Additionally, consider hiring a professional mechanic to install the heads to ensure that they are installed correctly and safely.
Recommendation:If you are considering purchasing the 106-0420 3-5 big dual plug cylinder heads, I would recommend doing your research and consulting with a Harley Davidson mechanic to ensure that they are a good fit for your bike and that you have the necessary skill level to install them. Additionally, I would recommend purchasing the cylinder heads from a reputable source to ensure that they are in good condition and will provide the performance improvements that you are looking for.
They will not fit on stock pinhead cylinders. Compression depends on piston type and engine displacement.
Cylinder head kit includes front and rear heads, complete with valves springs, gaskets, pan cover exhaust port gaskets.