fits model: Yfm350, Yfm, 350, Moto4. make: Yamaha.

( Brand: Motorsport Gaskets ), ( Part Type: Cover Gasket Stator ), ( UPC: 638037941500 )
The **Yamaha YFM350 Moto YFM 350 Stator Cover Gasket (Part Number: 638037941500 / M-G 330357-3)** is a precision-engineered sealing component designed exclusively for the stator cover assembly of Yamaha s YFM350 motorcycle, ensuring optimal electrical insulation and mechanical integrity within the alternator housing. Crafted from high-quality **silicone or nitrile rubber** (depending on the specific variant), this gasket features a **thin, flexible profile** that conforms seamlessly to the mating surfaces of the stator cover and alternator housing, preventing oil, coolant, and moisture ingress while maintaining a secure, vibration-resistant seal. The gasket s **laser-cut or die-formed design** guarantees precise dimensional accuracy, minimizing gaps that could lead to electrical shorts, power loss, or premature wear in the alternator system. Engineered to withstand the demanding thermal and mechanical stresses of high-performance riding, this gasket is resistant to **oil, fuel, and temperature fluctuations**, ensuring long-term reliability even under extreme operating conditions. Its **smooth, non-abrasive surface** reduces friction during installation and removal, while the **reinforced edges** prevent deformation under clamping pressure, preserving the integrity of the seal over time. Ideal for both **OEM replacement and aftermarket upgrades**, this gasket is a critical component for maintaining the alternator s efficiency, extending the lifespan of the electrical system, and preventing costly failures. Perfect for Yamaha YFM350 owners seeking a **durable, high-performance solution**, this stator cover gasket is a must-have for any maintenance or restoration project.
### **Pros and Cons of Buying Motorsport Gaskets (Part Number: 638037941500 / M-G 330357-3) Stator Cover Gasket for Yamaha YFM350/YFM4**
#### **Pros:**1. **High-Quality Materials** Motorsport gaskets are typically made from reinforced silicone or high-temperature-resistant compounds, offering better durability and sealing performance compared to standard OEM gaskets. This reduces the risk of oil leaks, coolant intrusion, or compression loss over time.
2. **Precision Fit** These gaskets are often designed to match modern engine tolerances more accurately than aftermarket alternatives, reducing the chance of installation issues or improper sealing.
3. **Longer Lifespan** Due to superior materials and construction, Motorsport gaskets tend to last longer than basic replacement gaskets, especially in high-performance or heavily used engines.
4. **Compatibility with Modifications** If you ve made engine modifications (e.g., forced induction, high-RPM tuning), these gaskets are more likely to handle increased stress without failing prematurely.
5. **Brand Reputation** Motorsport Gaskets is a well-known brand in the performance aftermarket, suggesting consistent quality and reliability. Many mechanics and tuners trust their products for critical applications.
6. **Ease of Installation** The gasket is pre-cut and designed for straightforward installation, reducing the risk of mistakes that could lead to leaks or damage.
7. **Warranty & Support** Reputable suppliers often provide warranties or customer support, which can be reassuring if issues arise post-installation.
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#### **Cons:**1. **Higher Cost** Motorsport gaskets are more expensive than standard OEM or budget aftermarket alternatives. For a basic replacement, this may not be justified unless you prioritize longevity or performance.
2. **Overkill for Stock Applications** If your Yamaha YFM350/YFM4 is used for casual riding without aggressive tuning, a standard gasket (e.g., from a reputable aftermarket brand like Fel-Pro or Sealed Power) may suffice without the premium price.
3. **Potential Overengineering** Some riders may find the gasket s robustness unnecessary, especially if they don t push the engine to extreme limits. The extra strength might not provide noticeable benefits in everyday use.
4. **Limited Availability** Depending on your location, Motorsport Gaskets may not be as widely stocked as more common brands, requiring special ordering or longer wait times.
5. **Installation Skill Required** While the gasket itself is easy to install, improper surface preparation (e.g., not cleaning the mating surfaces properly) can negate the benefits of a high-quality gasket. This requires attention to detail.
6. **Compatibility Doubts** Some users report slight variations in fitment compared to OEM gaskets, though Motorsport Gaskets generally claims compatibility. Double-checking with your specific engine build (e.g., year, modifications) is advisable.
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### **Conclusion:**The **Motorsport Gaskets stator cover gasket (638037941500 / M-G 330357-3)** is an excellent choice if you prioritize **durability, reliability, and performance** especially for tuned or heavily used Yamaha YFM350/YFM4 engines. Its reinforced construction and precision engineering make it a strong option for riders who demand long-term sealing and resistance to heat/pressure. However, if you re on a tight budget or using the bike for light-duty purposes, a standard aftermarket gasket may offer comparable results at a lower cost.
**Recommendation:**- **Buy it if:** You ve modified your engine, ride aggressively, or want peace of mind knowing the gasket will hold up under stress. It s also ideal if you ve had issues with leaks or poor sealing in the past.
- **Skip it if:** You re looking for a budget-friendly replacement for stock use or prefer to test a more affordable aftermarket brand first.
- **Additional Tip:** Always clean the mating surfaces thoroughly with **brake cleaner or acetone** and use a **gasket sealer** (if recommended) to ensure a perfect seal. Follow the manufacturer s installation instructions carefully.
For most performance-oriented Yamaha YFM350/YFM4 owners, this gasket is a **solid investment** that justifies its cost through improved reliability and longevity.
Stator cover gasket for Yamaha Yfm350 moto 4 Yfm 350 MOTO4 fits 1987 -1995. Fits 87-95 Yamaha Yfm350 / moto-4.