1. Personal Watercraft Parts Products
  2. sku: 11439550187382722
  3. KAWASAKI 11008-3703

KAWASAKI 11008-3703 Top Cylinder Head Valves End Camshafts 12F

fits model: Stx. make: Kawasaki. year: 2003–2007.

11008-3703 Kawasaki 2003-2007 Stx 12f Cylinder Head Valves Top End Oem Camshafts

( Manufacturer Part Number: 11008-3703 ), ( Part Type: Valve Cylinder Head Camshaft ), ( Country Of Origin: United States )

Review KAWASAKI 12f Cylinder Head Valves Top End Oem Camshafts fits STX 2003–2007

Introducing the Kawasaki 11008-3703 top end kit, specifically designed for the Kawasaki STX 12F snowmobile models produced between 2003 and 2007. This kit includes new cylinder heads and camshafts, ensuring optimal engine performance and reliability.

The cylinder heads in this kit are meticulously engineered for precise combustion and efficient power transfer. They feature advanced design elements such as improved port flow for enhanced gas exchange, and optimized valve seats for reduced friction and longer wear. Each cylinder head comes with new valves, including intake and exhaust, ensuring a perfect seal and optimal flow for increased power and improved fuel efficiency.

The camshafts in the 11008-3703 top end kit are designed to work in harmony with the new cylinder heads, offering improved throttle response and increased power output. These camshafts are precision machined from high-strength materials, ensuring durability and longevity. They feature optimized cam profiles that provide faster valve opening and closing, resulting in improved engine breathing and increased power output. Additionally, the new camshafts come with new lifters and pushrods, ensuring a proper fit and smooth operation.

Installation of the 11008-3703 top end kit is a straightforward process, requiring only basic tools and some mechanical knowledge. The kit includes clear and concise instructions to guide you through the installation process. It is important to note that this kit does not include gaskets or seals, so be sure to have these on hand before beginning the installation process.

In summary, the Kawasaki 11008-3703 top end kit is an essential upgrade for any STX 12F snowmobile model produced between 2003 and 2007. With new cylinder heads and camshafts, this kit offers improved performance, increased power output, and enhanced reliability. Installation is straightforward, and the kit includes clear instructions to guide you through the process. Don't settle for less than optimal engine performance - upgrade to the Kawasaki 11008-3703 top end kit today.

Replacing Kawasaki STX 12F Cylinder Head Valves and Camshafts (2003-2007): Pros, Cons, and Conclusion

Introduction:

The Kawasaki STX 12F snowmobile is a popular model known for its powerful engine and excellent performance. Over time, the cylinder head valves and camshafts may wear out, requiring replacement. In this article, we will discuss the pros and cons of buying and installing aftermarket Kawasaki 11008-3703 cylinder head valves and top end camshafts for the 2003-2007 STX 12F.

Pros of buying aftermarket Kawasaki 11008-3703 cylinder head valves and camshafts:

1. Cost-effective: Aftermarket parts are generally less expensive than OEM (original equipment manufacturer) parts. Purchasing aftermarket valves and camshafts can save significant money compared to buying new OEM components.

2. Availability: Aftermarket parts are often more readily available than OEM parts. Local snowmobile shops and online retailers usually have a wide selection of aftermarket valves and camshafts for various Kawasaki models.

3. Performance improvement: Upgraded aftermarket valves and camshafts can provide better engine performance, including increased horsepower and torque. Some aftermarket parts are designed to improve engine efficiency and reduce emissions.

4. Customizability: Aftermarket valves and camshafts come in various designs and configurations, allowing users to customize their engine's performance to their preferences.

Cons of buying aftermarket Kawasaki 11008-3703 cylinder head valves and camshafts:

1. Quality concerns: Aftermarket parts may not always meet the same quality standards as OEM parts. Some aftermarket components may not fit properly or function as intended, leading to potential issues down the line.

2. Compatibility: It's essential to ensure that the aftermarket valves and camshafts are compatible with your specific Kawasaki STX 12F model and year. Incorrect parts can cause engine damage and decreased performance.

3. Installation challenges: Installing aftermarket cylinder head valves and camshafts can be a more complex process than replacing OEM parts. Users may need specialized tools and a good understanding of the engine's internal components.

4. Warranty: OEM parts usually come with a manufacturer's warranty, while aftermarket parts do not always offer the same level of protection.

Conclusion:

When considering replacing the cylinder head valves and camshafts on a Kawasaki STX 12F (2003-2007), there are advantages and disadvantages to buying aftermarket parts. Aftermarket components can save money, offer better performance, and provide customizability. However, they may have quality concerns, compatibility issues, and require more effort for installation. Ultimately, the decision to use aftermarket valves and camshafts depends on the user's budget, technical expertise, and desired performance improvements.

Recommendation:

If you're comfortable with the potential challenges and confident in your ability to install aftermarket cylinder head valves and camshafts, they can be a cost-effective and performance-enhancing modification for your Kawasaki STX 12F. Make sure to choose a reputable aftermarket parts supplier and verify compatibility with your specific model and year. Always follow the installation instructions carefully and consider seeking professional assistance if necessary.

Details:

Comes as shown. Ski started and ran fairly well. Removed from a running freshwater machine that had been sitting for number of years. Recommend Valves Be Lapped to ensure proper seal.

Please Review Attached Photos for closer inspection of condition and ensure it is the correct Item. 2003 Kawasaki STX 12F Cylinder Head Assay 11008-3703.

part #: 110083703 prices

  • $249.99-$399.49

specifications perwatercraft:

  • for models: Stx
  • for makes: Kawasaki
  • for years: 2003-2007
  • mpn: 11008-3703
  • part type: Valve Cylinder Head Camshaft
  • country of origin: United States

returns perwatercraft:

  • policy: No Returns

general perwatercraft:

  • condition: Used
  • Parts Accessories > Personal Watercraft Parts > Other Parts

shipping perwatercraft:

  • service: USPS Ground Advantage
  • cost: $0.00
  • carrier: USPS
  • type: Calculated
  • transit: 4-7 Days
  • class: Standard

offer perwatercraft:

  • sold: 0
  • quantity: 1
  • best offers: True
  • started: April 2, 2026
  • availability: In Stock
  • options: Ship-to-home

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seller perwatercraft:

  • city: Griffin, Georgia
  • # reviews: 1031
  • rating: 100.0%
for models: stx, for makes: kawasaki, for years: 2003-2007, part type: valve cylinder head camshaft, country of origin: united states,
category: watercraft parts > parts, sku: 11439550187382722,

Kawasaki 11008-3703 Is Similar To:

perwatercraft logo
4 offers $249.99–$399.49 USD
  • Offer #1: $330.00 price + $0.00 shipping estimate = $330.00* total. Ski started and ran fairly well. 2003 Kawasaki STX 12F Cylinder Head Assy.FREE SHIPPING
  • Offer #2: $249.99 price + $43.23 shipping estimate = $293.22* total. This may fit other years and models (cams may be different). Used cylinder head (with cams) from a 2003 Kawasaki STX-12F.+$43.23 shipping
  • Offer #3: $399.49 price + $28.94 shipping estimate = $428.43* total. Irby's Ski and Cycle.+$28.94 shipping
  • Offer #4: $3499.99 price + $Calculated shipping estimate = $3499.99* total.+$Calculated shipping

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