fits model: Xj550, Xj, 550, Maxim. make: Yamaha. year: 1981–1983.

( Manufacturer Part Number: 4U8-11101-00-00 ), ( Type: Cylinder Head )
The 4U8-11101-00-00 81-83 Yamaha XJ550/XJ 550 Maxim Engine Top Cylinder Head is a high-quality replacement part designed specifically for the Yamaha XJ550 and XJ 550 Maxim models from the years 1981 to 1983. This top cylinder head is a crucial component of the engine, responsible for housing the combustion chambers, valves, and spark plugs.
The cylinder head is made from durable cast aluminum, ensuring both strength and lightweight performance. It features four valves per cylinder, with two intake and two exhaust valves each. The intake valves have a diameter of 33mm, while the exhaust valves measure 27mm. The valve guides are made from high-temperature material for longer life and improved engine performance.
The top cylinder head also includes the spark plug holes, with each cylinder having one spark plug located in the center of the combustion chamber. The spark plug threads are standard 12mm, making it easy for you to install the new spark plugs.
The cylinder head comes fully gasketed, ensuring a perfect seal between the cylinder head and the engine block. The gaskets are made from high-quality material to prevent leaks and ensure proper engine performance.
This 4U8-11101-00-00 81-83 Yamaha XJ550/XJ 550 Maxim Engine Top Cylinder Head is a direct fit replacement, meaning it's designed to fit and function exactly like the original part. It is engineered to provide excellent performance, reliability, and longevity. This high-quality replacement part is an excellent choice for anyone looking to restore, maintain, or upgrade their Yamaha XJ550 or XJ 550 Maxim engine.
Pros of buying 4U8-11101-00-00 81-83 Yamaha XJ550 XJ 550 Maxim engine top cylinder head:1. OEM part: This cylinder head is an original equipment manufacturer (OEM) part, which means it is made by Yamaha and is designed to fit perfectly into your XJ550 engine.
2. High-quality materials: The cylinder head is made of high-quality materials, such as aluminum alloy, which ensures durability and reliability.
3. Improved performance: The cylinder head has been designed to provide better performance, including improved heat dissipation, which can help to prevent engine overheating.
4. Easy installation: The cylinder head is designed to be easy to install, which can save you time and money compared to having a professional mechanic do the job.
Cons of buying 4U8-11101-00-00 81-83 Yamaha XJ550 XJ 550 Maxim engine top cylinder head:1. Cost: OEM parts can be more expensive than aftermarket parts. However, the quality and reliability of OEM parts can make them worth the investment in the long run.
2. Availability: OEM parts may be harder to find than aftermarket parts, especially if your bike is older or less popular.
3. Limited customization: OEM parts are designed to fit the specific model and year of your bike, which means they may not offer as much customization as aftermarket parts.
Conclusion:If you are looking for a reliable and high-quality top cylinder head for your Yamaha XJ550 XJ 550 Maxim, the 4U8-11101-00-00 part is a great option. While it may be more expensive than some aftermarket parts, the OEM quality and improved performance are worth the investment. Additionally, the easy installation can save you time and money compared to having a professional mechanic do the job.
Recommendation:If you are looking to upgrade your XJ550 engine, consider replacing the top cylinder head with the 4U8-11101-00-00 part. It will provide better performance, improve heat dissipation, and ensure that your engine runs smoothly and reliably. And with easy installation, you can do the job yourself and save money on labor costs.
All bucket,shims included. Nice journals.
Come off a running bike, removed from: 1982 Yamaha XJ550 Maxim with n miles please review all pictures to assess the condition of item.