fits model: Wr. make: Harley. year: 1937–1973.

( Manufacturer Part Number: 16683-39 ), ( Part Type: Aluminum Cylinder Head ), ( Placement On Vehicle: Front ), ( Surface Finish: Aluminum ), ( Country/region Of Manufacture: Unknown )
Introducing the 1937-1973 Harley-Davidson Flathead Wide Glide/Wide Low Glide Cylinder Heads, specifically model numbers 16683-39 and 16681-39. These cylinder heads are an essential component of the iconic Flathead engine, renowned for its robustness and timeless appeal.
The 16683-39 and 16681-39 Harley-Davidson cylinder heads are engineered to deliver exceptional performance and longevity. They are constructed from high-quality cast iron, ensuring durability and heat resistance, which are crucial factors in maintaining engine efficiency and stability.
The cylinder heads feature a classic, flat-head design, with a combustion chamber configuration that allows for a generous air-fuel mixture. This design, combined with the optimal intake and exhaust ports, ensures efficient combustion and optimal power output.
The 16683-39 and 16681-39 cylinder heads are designed to fit seamlessly into the 1937-1973 Harley-Davidson Flathead engines used in Wide Glide and Wide Low Glide models. They are precision-machined to ensure a perfect fit, minimizing the risk of leaks and maximizing performance.
These cylinder heads also come with fully-machined and finished valve seats, which ensures a precise fit for the valves and ensures optimal sealing for optimal performance and engine longevity.
In conclusion, the 1937-1973 Harley-Davidson Flathead Wide Glide/Wide Low Glide Cylinder Heads, model numbers 16683-39 and 16681-39, are a must-have upgrade for any classic Harley-Davidson enthusiast. Their robust construction, efficient combustion chamber design, and precise fit ensure optimal performance and longevity, making them an excellent investment for any Flathead engine.
Pros of buying 1937-1973 Harley-Davidson Flathead WL/WD cylinder heads (16683-39 and 16681-39):1. Authenticity: These heads are original parts from Harley-Davidson's iconic Flathead engine era, which adds a unique and historical value to any restoration project.
2. Durability: Flathead engines are known for their simplicity and reliability, and these heads have been tested and proven through decades of use.
3. Availability: Replacement cylinder heads for these models are still readily available on the market, making repairs and maintenance more accessible.
4. Affordability: Compared to newer models, these heads can be more cost-effective, making them an attractive option for budget-conscious restorers.
Cons of buying 1937-1973 Harley-Davidson Flathead WL/WD cylinder heads (16683-39 and 16681-39):1. Limited Performance: While these heads are reliable and durable, they may not offer the same level of performance as more modern cylinder heads.
2. Limited Availability of High-Performance Parts: If you're looking for upgrades or high-performance parts, you may have a more limited selection compared to newer models.
3. Potential for Wear and Tear: As these heads are over 50 years old, they may show signs of wear and tear or require more frequent maintenance than newer parts.
Conclusion:Buying 1937-1973 Harley-Davidson Flathead WL/WD cylinder heads (16683-39 and 16681-39) can be an excellent choice for restoring vintage Flathead engines or for those who appreciate the historical value and simplicity of these classic parts. However, keep in mind that they may not offer the same level of performance as modern heads and may require more frequent maintenance due to their age.
Recommendation:If you're looking for a reliable and cost-effective option for restoring a Flathead engine, these cylinder heads can be a great choice. However, consider the potential for wear and tear and make sure to research and plan for any necessary repairs or upgrades to ensure your engine runs smoothly. Additionally, purchasing from a reputable source can help ensure the quality of the parts and ensure they meet your needs.
These are really nice heads AMD they re brand new. This is a new set of aluminum cylinder heads for Harley-Davidson 45 model's. 6:1 compression.
Fins are all perfect. Letting these go for cheap because I see several people selling similar heads on.