YAMAHA 21002K22QK22 Cylinder Jug Barrel Engine Head 80MM

( Manufacturer Part Number: 21002K22QK22 ), ( Part Type: Cylinder Engine Head Work ), ( Engine Type: 4-stroke ), ( Country Of Origin: Japan )

Review YAMAHA Cylinder Works 80mm Jug Barrel Engine Head fits WR250F 250F WR 2001–2013

The Yamaha 21002K22QK22 cylinder head is an essential component of the WR250F engine model produced by Yamaha between 2001 and 2013. This engine head is specifically designed for the 250cc, single-cylinder, liquid-cooled, four-stroke motorcycle engine.

This cylinder head features an 80mm bore, which determines the diameter of the cylinder's piston-facing surface. This dimension is critical in determining the engine's displacement and power output. The head also includes four valves - two intake and two exhaust - arranged in a DOHC (Double Overhead Camshaft) configuration.

The intake and exhaust ports are strategically designed to ensure optimal gas flow into and out of the engine. The intake ports are designed to maximize airflow, while the exhaust ports are optimized for efficient exhaust gas expulsion.

The cylinder head is made of aluminum alloy, making it lightweight yet durable. It also features a high-performance ceramic composite coating on the cylinder bore to reduce friction and improve heat dissipation.

The head gasket is a critical seal that prevents coolant and engine oil from mixing. This gasket is designed to provide a tight seal while allowing for thermal expansion and contraction of the engine components.

The camshafts and valves are actuated by a twin-cam chain drive system, ensuring reliable and consistent valve operation. The camshafts are also designed to provide optimal valve timing for optimal engine performance.

The cylinder head also includes a number of mounting points for various engine components, including the timing chain cover, water pump, and alternator.

Overall, the Yamaha 21002K22QK22 cylinder head is a high-performance and durable component that plays a crucial role in the WR250F engine's operation. Its precise design and construction ensure optimal engine performance and longevity.

Pros and Cons of Buying a Yamaha WR250F Cylinder (80mm Jug Barrel Engine Head) for 2001-2013 Models

The Yamaha WR250F is a popular motorcycle model known for its versatility and reliability. One of its essential components is the cylinder head, specifically the 80mm jug barrel engine head. Here are some pros and cons to consider before purchasing a used one.

1. Durability: The Yamaha WR250F is known for its robust design, and the 80mm jug barrel engine head is no exception. These heads can last for thousands of miles if properly maintained.

2. Availability: These cylinder heads are relatively common and widely available in the aftermarket, which makes finding a replacement easier and more cost-effective.

3. Performance: The larger 80mm jug barrel engine head allows for increased compression ratio, leading to improved engine performance and power output.

4. Cost-effective: Compared to buying a new motorcycle or even an entirely new engine, purchasing a used cylinder head can save significant money.

1. Age and wear: Used cylinder heads can come with varying degrees of wear and tear, which could impact their overall performance and longevity.

2. Quality concerns: It's essential to ensure that the used cylinder head you're considering is from a reputable seller and has been properly inspected and reconditioned, if necessary.

3. Compatibility: Make sure the cylinder head you're buying is compatible with your specific model year and any modifications you may have made to your motorcycle.

4. Installation: Installing a used cylinder head can be a complex process, requiring special tools and technical expertise. It's recommended to have a professional mechanic handle the installation.

The decision to buy a Yamaha WR250F 80mm jug barrel engine head depends on your specific situation, budget, and mechanical skills. If you're comfortable working on your motorcycle and can find a well-maintained used head from a reliable source, it could be a cost-effective solution for improving your bike's performance. However, if you're not confident in your abilities or prefer a new component, it may be worth considering other options, such as buying a rebuilt or new engine or even purchasing a different motorcycle altogether. Ultimately, thorough research and careful consideration are key to making an informed decision.

1. Research potential sellers: Look for reputable, well-established sellers with positive customer reviews and a history of selling high-quality used parts.

2. Verify compatibility: Double-check that the cylinder head is compatible with your specific motorcycle model and year.

3. Inspect the head: Request photographs and detailed descriptions of the cylinder head's condition, including any signs of wear, damage, or modification.

4. Seek professional advice: Consult with a mechanic or knowledgeable motorcycle enthusiast to help you assess the used cylinder head's worth and potential issues.

5. Consider buying a rebuilt or new head: If you're unsure about the quality of a used head or prefer a more reliable option, consider purchasing a rebuilt or new cylinder head instead.

Details:

Fitment Guarantee. Unit is in good condition. Gasket surfaces and mounting threads are intact. Cylinder Works Jug Assembly.

3 80mm jug 269CC. No cracks, breaks or repairs seen. Electrical parts are non-returnable. MPN: 5XC-11311-20-00.

These parts were removed from a 2007 Yamaha WR250F. If your vehicle is different than this, be sure to verify fitment. All parts unless otherwise stated are used and will show signs of normal wear tear. They are included with the sale, free of charge.

Cylinder walls are intact, light wear seen.

part #: 21002k22qk22 price

• $299.99

specifications cylindermotorcycleiz:

• for models: Wr250f, 250f, Wr
• for makes: Yamaha
• for years: 2001-2013
• mpn: 21002k22qk22
• part type: Cylinder Engine Head Work
• engine type: 4-stroke
• country of origin: Japan

offer cylindermotorcycleiz:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: March 20, 2026
• quantity: 1

shipping cylindermotorcycleiz:

• transit: 5-9 Days
• carrier: USPS
• service: USPS Priority Mail Medium Flat Rate Box
• type: Fixed
• class: Expedited
• cost: $20.00

general cylindermotorcycleiz:

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

payments cylindermotorcycleiz:

• wallet: Apple-pay
• credit card: Diners-club
• other

returns cylindermotorcycleiz:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

seller cylindermotorcycleiz:

• rating: 99.8%
• city: Puyallup, Washington
• # reviews: 4856

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