fits model: Screamin, Eagle. make: Eagle, Harley. year: 2004–2006.

( Brand: Harley-davidson ), ( Manufacturer Part Number: 16657-05 ), ( Part Type: Head ), ( Country/region Of Manufacture: United States ), ( Surface Finish: Black ), ( Placement On Vehicle: Rear )
The 2004-2006 Screamin' Eagle Rear Head, part number 16657-05, is a high-performance upgrade for Harley-Davidson's V-twin engines. This rear cylinder head is designed to enhance power and torque, providing a thrilling riding experience for Harley-Davidson enthusiasts.
Crafted from high-quality aluminum alloy, the Screamin' Eagle Rear Head features an increased combustion chamber volume, which allows for a more efficient fuel-air mixture. This results in a more powerful combustion process, generating more horsepower and torque. The larger valves and ports further contribute to improved airflow, ensuring optimal combustion and engine performance.
The Screamin' Eagle Rear Head also features an advanced cooling system, with larger cooling fins and water passages. This helps to dissipate heat effectively, preventing overheating and ensuring long-term engine durability. The head's precision-machined surfaces and tight tolerances ensure reliable sealing and proper gas flow, minimizing exhaust gas leaks and maximizing engine efficiency.
The Screamin' Eagle Rear Head is a straightforward upgrade, requiring no modifications to your Harley-Davidson's engine or cylinder heads. It is designed to fit seamlessly with your existing engine, making installation a breeze. With its superior performance and durability, the 2004-2006 Screamin' Eagle Rear Head is an excellent investment for any Harley-Davidson enthusiast looking to enhance their bike's power and performance.
Pros of buying a 2004-2006 Harley-Davidson Screamin' Eagle Rear Head 16657-05:1. Power and Performance: The Screamin' Eagle rear head is known for its increased power and performance, making it a popular choice among Harley-Davidson enthusiasts.
2. Reliability: Harley-Davidson engines are generally known for their reliability, and the Screamin' Eagle rear head is no exception.
3. Increased Horsepower: The Screamin' Eagle rear head is designed to increase horsepower, making your Harley-Davidson faster and more powerful.
4. Customizability: The Screamin' Eagle rear head is a popular aftermarket upgrade, and there are many aftermarket parts and tuning options available to further customize your Harley-Davidson.
Cons of buying a 2004-2006 Harley-Davidson Screamin' Eagle Rear Head 16657-05:1. Cost: The Screamin' Eagle rear head is a significant investment, and the cost of installation can also add up.
2. Increased Noise: The Screamin' Eagle rear head is designed to increase horsepower, and this often results in increased noise levels.
3. Warranty Issues: If you have a new Harley-Davidson, installing aftermarket parts like the Screamin' Eagle rear head may void your warranty.
Conclusion:The 2004-2006 Harley-Davidson Screamin' Eagle Rear Head 16657-05 is a popular aftermarket upgrade for Harley-Davidson owners looking to increase power and performance. While it can be a significant investment, it is generally reliable and customizable. However, it is important to consider the additional cost of installation, increased noise levels, and potential warranty issues before making a purchase.
Recommendation:If you are a Harley-Davidson owner looking to increase power and performance, the Screamin' Eagle rear head is a solid option. However, I would recommend doing your research and considering all of the pros and cons before making a purchase. Additionally, make sure to install the part correctly to ensure its longevity and proper functioning.
Used Screamin Eagle rear head. As far I can tell valve is OK. Rear valve guide is loose in the head. Packaged well in original h-d package.
27,000 miles. Did not damage piston or motor. Bike ran good just sometimes made an odd noise then it would stop. No damage to any threaded screw holes.