YAMAHA C6YH139 Cylinder Head Valves

( Manufacturer Part Number: C6YH139 ), ( Machine Type: Off-road Motorcycle ), ( Items Included: Bolts ), ( Material: Aluminum ), ( Vintage Part: No ), ( Materials Sourced From: Japan ), ( Engine Type: 4-stroke ), ( Type: Cylinder Head ), ( Unit Type: Unit ), ( Finish: Unfinished ), ( Item Weight: 15 Lb )

Review YAMAHA Cylinder Head Valves Damaged fits YZ450F 2006–2009

The Yamaha YZ450F, a legendary motorcycle in the world of off-road racing, was produced between 2006 and 2009. This high-performance machine featured several advanced components to deliver unrivaled power and agility. Among these components were the cylinder head valves, which played a crucial role in the engine's combustion process.

The C6YH139 cylinder head valves are genuine Yamaha replacements designed specifically for the YZ450F models from 2006 to 2009. These valves are precision-engineered to ensure optimal engine performance and efficiency. The intake and exhaust valves are made of durable, heat-resistant material to withstand the extreme temperatures and pressures within the engine.

The intake valve, with a diameter of approximately 34mm, is responsible for drawing in the air-fuel mixture from the carburetor. This valve operates in conjunction with the camshaft and lifters to create the intake cycle, which is essential for the proper functioning of the engine. The intake valve's sealing surface is coated with a high-performance material to minimize friction and promote efficient sealing.

The exhaust valve, with a diameter of around 29mm, is responsible for releasing the exhaust gases from the combustion process. This valve works in tandem with the camshaft and lifters during the exhaust cycle, ensuring an efficient and powerful exhaust stroke. The exhaust valve's sealing surface is also coated with a high-performance material to ensure a tight seal and minimize exhaust leakage.

The C6YH139 cylinder head valves are meticulously inspected during the manufacturing process to ensure they meet Yamaha's stringent quality standards. They are also designed to be a direct replacement for the original equipment, making installation straightforward and hassle-free.

In summary, the Yamaha C6YH139 cylinder head valves are a vital component of the YZ450F's high-performance engine. These valves are precision-engineered to deliver optimal engine performance and efficiency, ensuring that your YZ450F continues to deliver the power and agility it's known for.

Buying aftermarket Yamaha YZ450F cylinder head valves for models produced between 2006 and 2009 involves considering several factors to determine if it's a worthwhile investment. Here are some pros and cons.

1. Cost-effective: Aftermarket valves can be significantly cheaper than OEM (Original Equipment Manufacturer) valves, making them an attractive option for budget-conscious riders.

2. Enhanced performance: Aftermarket valves may offer improved flow rates, which can lead to increased power and better engine response.

3. Customization: Aftermarket valves allow riders to choose specific valve designs that cater to their riding style or track conditions.

1. Quality concerns: There is a risk of receiving inferior quality aftermarket valves, which may not last as long or perform as well as OEM valves.

2. Installation complexity: Installing aftermarket valves may require additional skills and expertise compared to OEM valves, potentially leading to additional labor costs.

3. Potential compatibility issues: Aftermarket valves may not be an exact match to the OEM valves, which could lead to clearance issues or other potential problems.

In conclusion, the decision to buy aftermarket Yamaha YZ450F cylinder head valves depends on a rider's priorities. If cost savings and potential performance gains are important, aftermarket valves could be a good choice. However, if reliability, ease of installation, and compatibility are top concerns, OEM valves may be a better investment. Ultimately, it's essential to research various brands and suppliers thoroughly and consider the specific needs and circumstances of your motorcycle.

Details:

Have valve damaged needs machine work can save money and don't have buy another expensive head.

part #: c6yh139 prices

• $279.99-$500.00

specifications cylindermotorcycleiz:

• for models: Yz450f
• for makes: Yamaha
• for years: 2006-2009
• mpn: C6yh139
• machine type: Off-road Motorcycle
• items included: Bolts
• material: Aluminum
• vintage part: No
• materials sourced from: Japan
• engine type: 4-stroke
• type: Cylinder Head
• unit type: Unit
• finish: Unfinished
• item weight: 15 Lb

payments cylindermotorcycleiz:

• wallet: Paypal
• credit card: Mastercard
• other

offer cylindermotorcycleiz:

• started: November 12, 2025
• best offers: True
• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home

seller cylindermotorcycleiz:

• city: Baytown, Texas
• rating: 100.0%
• # reviews: 11

shipping cylindermotorcycleiz:

• type: Calculated
• cost: $46.14
• service: USPS Ground Advantage
• transit: 5-12 Days
• carrier: USPS
• class: Standard

general cylindermotorcycleiz:

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

returns cylindermotorcycleiz:

• policy: No Returns

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