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Item #:
91121937
6E5-12411-30-00 2Pcs Boat Motor Thermostat Valve Thermostat Kit FOR YAMAHA 2-Stroke HP 15HP 25HP 30HP 40HP-250HP Outboard Motor Replace 688-12411
Item #:
91121937
MWK 79201
Price Details
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Imported from USA store
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Order now and get it around Tuesday, July 14
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The thermostat is the valve that controls the way of coolant. Keep the engine from under-cooling. It can effectively help the engine to work properly.
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What Stands Out
Compatibility
Designed specifically for Yamaha 2-stroke outboard motors ranging from 15HP to 250HP, ensuring perfect fit and optimal performance compared to generic thermostats.
Durable Construction
Made from high-quality materials for long-lasting durability, resisting corrosion and wear to ensure reliable operation in harsh marine environments.
Easy Installation
This thermostat kit simplifies installation, allowing users to quickly replace old components without complex tools, minimizing downtime on the water.
Product Details
| Item Weight | 1 lbs (450 grams) |
Who Should Buy?
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Yamaha Outboard Owners
Ideal for users with Yamaha 2-Stroke engines needing reliable temperature regulation and enhanced performance.
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Maintenance Enthusiasts
Perfect for those who regularly maintain their motors and require quality thermostat replacements.
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Fishing Enthusiasts
Beneficial for anglers using outboard motors to ensure engine reliability during long fishing trips.
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Non-Yamaha Motors
Not suitable for users with outboard motors from brands other than Yamaha, as compatibility issues may arise.
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High-Performance Racing
Not designed for racing applications that require specialized high-performance thermostats for optimal cooling.
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First-Time DIYers
May not be suitable for inexperienced users unfamiliar with outboard motor maintenance and installation processes.
Product Description
6E5-12411-30-00 2Pcs Boat Motor Thermostat Valve Thermostat Kit FOR YAMAHA 2-Stroke HP 15HP 25HP 30HP 40HP-250HP Outboard Motor Replace 688-12411 6H3-12411 6E5-12411
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the purpose of the 6E5-12411-30-00 thermostat kit?
Answer: The 6E5-12411-30-00 thermostat kit regulates the engine temperature of your Yamaha 2-stroke outboard motor models ranging from 15HP to 250HP. By maintaining optimal engine temperature, it ensures optimal performance and efficiency. When the engine runs too cold or too hot, it can lead to inefficiencies and potential damage. Using this thermostat kit helps avoid overheating issues, particularly in varying water temperatures, making it crucial for reliable operation. -
Question:
What Yamaha outboard motor models are compatible with this thermostat kit?
Answer: This thermostat kit is compatible with Yamaha 2-stroke outboard motors including models ranging from 15HP to 250HP. It replaces the OEM part number 688-12411. These models typically include both recreational and commercial engines, making it versatile for various boating needs. If you're unsure about compatibility, please refer to the engine's service manual to confirm that your specific model aligns with the specifications of this kit. -
Question:
How do I install the thermostat kit?
Answer: Installing the 6E5-12411-30-00 thermostat kit typically involves removing the old thermostat from the engine, cleaning the mounting area, and carefully positioning the new thermostat in place. Ensure you follow a detailed repair manual or online tutorial specific to your Yamaha model for precise steps. Proper installation is critical since incorrect positioning can affect engine temperature regulation, leading to performance issues in your outboard motor. -
Question:
How often should I replace the thermostat in my outboard motor?
Answer: It's advisable to inspect the thermostat annually and consider replacing it every few years, depending on usage and operating conditions. If you notice any engine overheating or inconsistent temperature readings, that's a clear sign it may be time for a replacement. Regular maintenance not only boosts performance but can also extend the life of your outboard motor, particularly for those frequently operating in variable water conditions. -
Question:
What are the signs that indicate a faulty thermostat?
Answer: Common signs of a faulty thermostat include engine overheating, fluctuating temperature readings, or poor performance. You may also notice excessive engine noise or even coolant leaks if the thermostat is stuck in the open or closed position. If you experience any of these symptoms, it's wise to check the thermostat promptly to avoid further engine damage, ensuring your boating trips remain safe and enjoyable. -
Question:
Is this thermostat kit suitable for saltwater use?
Answer: Yes, the 6E5-12411-30-00 thermostat kit is designed to withstand harsh marine environments, including saltwater applications. However, routine maintenance is crucial, such as flushing the cooling system after each use in saltwater to prevent corrosion. This proactive approach will improve the longevity of your thermostat and engine, helping maintain consistent operation throughout the boating season. -
Question:
How does the thermostat impact engine performance?
Answer: The thermostat plays a crucial role in engine performance by regulating coolant flow based on temperature. This ensures the engine reaches optimal operating temperatures quickly while preventing overheating. A properly functioning thermostat promotes fuel efficiency and minimizes wear on engine parts, leading to smoother operations. By keeping the engine in its ideal temperature range, boating enthusiasts can expect a more responsive and enjoyable ride. -
Question:
What materials are used in the construction of this thermostat kit?
Answer: The 6E5-12411-30-00 thermostat kit is typically constructed from high-quality materials like marine-grade plastic and stainless steel components. These materials are designed to withstand harsh marine environments, preventing corrosion and ensuring reliable performance. The durability of these materials helps maintain temperature control in various water conditions, promoting longevity and effectiveness in your outboard motor. -
Question:
Can I use this thermostat kit for other brands of outboard motors?
Answer: This thermostat kit is specifically designed for Yamaha outboard motors and may not be compatible with other brands like Mercury or Honda. Using a thermostat not designed for your engine can lead to improper functioning and potential damage. Always ensure to use parts that are specifically matched to your engine's make and model for optimal performance and safety. -
Question:
Where can I buy the 6E5-12411-30-00 thermostat kit?
Answer: You can purchase the 6E5-12411-30-00 (2Pcs) Boat Motor Thermostat Kit on Ubuy, which stocks a wide range of boat motor parts and accessories. Ubuy provides a user-friendly shopping experience, allowing you to browse products, read reviews, and find detailed specifications to ensure the right fit for your Nissan or any associated outboard motor. Ubuy is recognized for its reliable service and diverse options for marine enthusiasts.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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MWK 79201
Order now and get it around Tuesday, July 14
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Compatible with Yamaha 2 stroke 3-250HP
- Made of high quality copper material
- Enhances safety of the vehicle
- Packing includes 2 thermostats
- Temperature: 60℃/140℉ for mostly 4 stroke outboard engine using
- After-sales service available for assistance
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