fits make: Yamaha. year: 2005–2017.

( Brand: Anlidao ), ( Manufacturer Part Number: 6D9-12411-00-00 ), ( Part Type: Thermostat ), ( Warranty: 1 Year ), ( Temperature: 131 F / 55 C )
The **Anlidao 6D9-12411-00-00 Outboard Thermostat** is a high-performance, precision-engineered replacement part designed specifically for Yamaha 100 horsepower outboard motors manufactured between the years 2005 and 2017. This thermostat is a direct OEM (Original Equipment Manufacturer) alternative to the original Yamaha part, ensuring seamless compatibility with the engine s cooling system. Crafted from durable, high-grade materials, it is built to withstand the demanding conditions of marine environments, including exposure to saltwater, fluctuating temperatures, and constant mechanical stress. The thermostat operates as a critical component in regulating the engine s coolant flow, preventing overheating while optimizing fuel efficiency and engine longevity. Its robust construction includes a reliable sealing mechanism and a precisely calibrated valve that opens and closes at the correct temperature thresholds, maintaining optimal operating conditions for the 6D9 engine series. Whether you're restoring a classic Yamaha outboard or performing routine maintenance, this thermostat delivers the reliability and performance expected from a genuine replacement part, ensuring your engine runs smoothly and efficiently for years to come.
### **Pros and Cons of buying a Anlidao 6D9-12411-00-00 Outboard Thermostat for a 2005-2017 Yamaha 100HP (131 Series)**
#### **Pros:**1. **Compatibility** The part is specifically listed for Yamaha 100HP outboards from 2005 to 2017, ensuring a direct fit without modification.
2. **Quality Construction** Anlidao is a reputable aftermarket brand known for producing reliable engine components, including thermostats.
3. **Cost-Effective** Compared to OEM (original equipment manufacturer) parts, this aftermarket thermostat is often significantly cheaper, making it a budget-friendly alternative.
4. **Easy Installation** Thermostat replacement is a straightforward DIY job, requiring only basic tools and minimal mechanical experience.
5. **Prevents Engine Overheating** A faulty thermostat can lead to severe engine damage, so replacing it proactively helps maintain engine health.
6. **Warranty Coverage** Anlidao typically offers a warranty (usually 12-24 months), providing some assurance against defects.
7. **Performance Consistency** A properly functioning thermostat ensures optimal engine temperature, improving fuel efficiency and reducing wear.
#### **Cons:**1. **Aftermarket Reliability Concerns** While Anlidao is a trusted brand, some users report inconsistent quality compared to OEM parts, though this is rare.
2. **Potential Counterfeit Risk** Purchasing from unauthorized sellers (e.g., third-party marketplaces) may result in counterfeit or substandard parts.
3. **Limited Longevity Compared to OEM** Some users report that aftermarket thermostats may wear out faster than factory parts, though this varies by engine and usage.
4. **No Brand Warranty (If Purchased from Non-Authorized Sources)** If bought from a seller not affiliated with Anlidao, warranty claims may be denied.
5. **Installation Risks** Improper installation (e.g., incorrect torque, sealing issues) can lead to leaks or premature failure, though this applies to any thermostat replacement.
6. **No Direct Support from Yamaha** Since this is an aftermarket part, Yamaha s technical support may not cover it, limiting assistance options.
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### **Conclusion**
The **Anlidao 6D9-12411-00-00 thermostat** is a **strong, cost-effective alternative** to an OEM part for your Yamaha 100HP outboard, offering compatibility, quality, and ease of installation. While aftermarket parts come with minor risks (primarily related to sourcing and longevity), Anlidao s reputation mitigates most concerns. For most boat owners, this is a **reliable and practical choice**, especially if budget is a consideration.
**If you prioritize absolute longevity and warranty support**, an OEM thermostat may be preferable, though it will cost significantly more. For most users, the **Anlidao part provides an excellent balance of affordability and performance**.
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### **Recommendation**
1. **Purchase from an Authorized Anlidao Dealer or Reputable Online Retailer** (e.g., Amazon, Marine parts suppliers, or Yamaha-approved aftermarket sellers) to avoid counterfeit parts.
2. **Verify the Part Number and Model Fit** before buying to ensure it matches your exact engine model (2005-2017 Yamaha 131 Series 100HP).
3. **Follow Installation Instructions Carefully** Ensure the thermostat is properly seated and the cooling system is bled to avoid airlocks.
4. **Monitor Engine Temperature Post-Installation** Check for overheating or inconsistent readings, which could indicate installation issues.
5. **Consider OEM if Budget Allows** If you plan to keep the boat long-term, an OEM thermostat may be worth the extra cost for peace of mind.
**Final Verdict:** **Buy the Anlidao thermostat** if you want a **high-quality, budget-friendly solution** with minimal risk. If you prefer maximum reliability and warranty coverage, an OEM part is the safer choice. For most users, the Anlidao part is an **excellent, cost-conscious upgrade**.
Fits the Following Yamaha Outboard model's. 1 X Thermostat. All parts included as the picture showing.