YAMAHA 6H400 Cylinder Head

( Manufacturer Part Number: 6H400 ), ( Type: Cylinder Head )

Review YAMAHA Cylinder Head

The Yamaha 6H400 cylinder head is a high-performance component designed for marine applications. This cylinder head is specifically engineered for use in Yamaha's 4-cylinder, 2.5L, DOHC, 16-valve Marine engines, model number 6HX1-11.

The 6H400 cylinder head features a compact design with a narrow combustion chamber shape that promotes efficient combustion and excellent power output. It is made of lightweight and durable aluminum alloy, which reduces the overall weight of the engine and enhances its responsiveness.

The cylinder head is equipped with four valves per cylinder, which are operated by DOHC (Double Overhead Camshaft) system. The intake and exhaust valves are made of high-strength steel material for maximum durability and optimal sealing performance. The valves have a diameter of 33mm for intake and 27mm for exhaust.

The cylinder head also includes a high-performance exhaust port design that optimizes exhaust flow for improved engine efficiency and reduced emissions. The exhaust ports are designed with a 60-degree angle between each port, which reduces turbulence and improves power output.

The 6H400 cylinder head is equipped with a high-performance, ceramic-composite cylinder head gasket. This gasket provides excellent sealing performance and durability, even under the extreme temperatures and pressures generated by the engine.

Additionally, the cylinder head features a large, 4-bolt main bearing cap design, which provides increased clamping force and enhanced cylinder rigidity for superior engine performance and durability.

The Yamaha 6H400 cylinder head is designed to meet or exceed the most stringent emission regulations, making it an ideal choice for marine applications where environmental considerations are a priority. With its high-performance design, durable construction, and advanced technology, this cylinder head is sure to provide excellent power and reliability for your marine engine.

Buying a Yamaha 6H400 cylinder head can be a good investment for those in need of a high-performance cylinder head for their engines. Here are some pros and cons to consider before making a purchase.

1. High-performance design: The Yamaha 6H400 cylinder head is known for its high-performance design, which can help improve engine power and efficiency.

2. Durable construction: This cylinder head is built with high-quality materials and advanced manufacturing processes, ensuring it can withstand the rigors of heavy use.

3. Compatibility: The Yamaha 6H400 cylinder head is compatible with a wide range of engines, making it a versatile option for many applications.

4. Improved cooling: The cylinder head features advanced cooling technology, which can help prevent engine overheating and improve overall engine performance.

1. Cost: The Yamaha 6H400 cylinder head can be quite expensive, which may be a barrier for some buyers.

2. Complex installation: Installing a new cylinder head can be a complex and time-consuming process, requiring specialized tools and knowledge.

3. Potential compatibility issues: While the Yamaha 6H400 cylinder head is compatible with many engines, there may be some compatibility issues with certain models, so it's essential to double-check before making a purchase.

In conclusion, the Yamaha 6H400 cylinder head offers numerous benefits, including high performance, durability, compatibility, and improved cooling. However, its high cost and complex installation process are significant drawbacks. Ultimately, whether or not this cylinder head is a good investment depends on your specific needs, budget, and technical expertise. If you have the resources and the need for a high-performance cylinder head, then the Yamaha 6H400 may be worth considering. Otherwise, you may want to explore other, more affordable options.

Details:

Buyer Pays Return Shipping. Yamaha Cylinder Head 6H400.

part #: 6h400 prices

• $33.99-$149.95

specifications cylindermotorcycleiz:

• for makes: Yamaha
• mpn: 6h400
• type: Cylinder Head

seller cylindermotorcycleiz:

• city: Gravois Mills, Missouri
• rating: 100.0%
• # reviews: 60

returns cylindermotorcycleiz:

• paid by: Buyer
• policy: Returns Accepted
• time: 14 Days

general cylindermotorcycleiz:

• condition: Used
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

payments cylindermotorcycleiz:

• credit card: Visa
• other
• wallet: Apple-pay

offer cylindermotorcycleiz:

• started: September 9, 2025
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• sold: 0
• best offers: True

shipping cylindermotorcycleiz:

• service: USPS Ground Advantage
• cost: $7.36
• carrier: USPS
• class: Standard
• transit: 4-11 Days
• type: Calculated

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