Your Professional Mercury Outboard Thermostat Supplier
Hangzhou Starwave Technology Co., Ltd. is a professional enterprise focusing on the full-range supply of outboard motor parts. Its core competitiveness comes from our own physical factory-a precision manufacturing base with decades of experience in manufacturing core components of internal combustion engines.We are highly compatible with nearly 100 models of global mainstream outboard motor brands such as Mercury, Yamaha, Suzuki and Honda, and our services cover diverse customer groups including professional repair shops, equipment distributors and overseas traders.
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![833072003 Thermostat for Mercury 115-250HP Outboard]()
833072003 Thermostat for Mercury 115-250HP OutboardHorsepower: 75-175HP
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![8M6010301 Thermostat for Mercury Outboard 115HP 4 Stroke Motor]()
8M6010301 Thermostat for Mercury Outboard 115HP 4 Stroke ...Horsepower: 115HP
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![9-43014 18-3549 Thermostat for Mercury 6-125 HP Outboard]()
9-43014 18-3549 Thermostat for Mercury 6-125 HP OutboardHorsepower: 6-125 HP
Why Choose Us
R&D Team
The R&D center of Hangzhou Starwave Technology Co., Ltd. is built around a highly skilled technical team, featuring a structure characterized by senior leadership combined with deep professional specialization, ensuring strong technical expertise, efficient innovation, and the ability to develop high-quality products that meet international market standards.
Our Service
We provide dedicated one-on-one technical support, with our professional technical team available 24/7 and a guaranteed response time of within 2 hours, ensuring efficient communication, rapid problem resolution, and reliable support throughout the entire cooperation process.
Our Certificate
As a national high-tech enterprise, we hold IATF 16949 and ISO 9001 system certifications, along with multiple patents, demonstrating our strong commitment to quality management, technological innovation, and industry-leading standards.
Production Market
Our products are exported to a wide range of international markets, including South American countries such as Brazil and Argentina, Southeast Asian countries, African nations, Europe, and the United States, reflecting our strong global reach and the trust of customers worldwide.
Rapid Warm-Up: Keeps coolant in the engine when cold, allowing it to reach optimal temperature faster for smoother operation.
Consistent Temperature Control: Regulates water flow to maintain a steady, ideal operating temperature, preventing both under-cooling and over-cooling.
Prevents Overheating: Stops excessive water flow when the engine is already hot, allowing proper heat dissipation.
Protects Critical Components: Ensures water fills the entire water jacket, especially the top of the powerhead, preventing hot spots, metal fatigue, and corrosion.
Improved Fuel Efficiency: A properly warmed engine burns fuel more efficiently.
Product Paramenters
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Technical Data for 8M6010301 outboard thermostat |
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OEM |
8M6010301 |
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Specification: |
OPERATING TEMPERATURE: 122°F / 50°C |
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Replaces: |
Product Type: Ignition Key Switch / Specifications: / Replaces: / Oem Interchange Part Number : |
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Yamaha Outboard Marine Thermostat 6EK-12411-00-00 6EK-12411-00 |
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Yamaha Outboard Marine Thermostat 6GR-12411-00-00 6GR-12411-00 |
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Yamaha Outboard Marine Thermostat Rubber Seal 6EK-12412-00-00 |
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Sierra Marine 18-3639 |
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8M6010301 Mercury Quicksliver Marine |
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Applications: |
This Item Fits Various Applications By Part Number. Please Check Your Part Number To Ensure Fitment. / Make & Model(S): |
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Yamaha Outboard Motor 4 Stroke 115 HP F115B F115 LF115 VF115 2014-2020 |
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Yamaha Outboard Motor Yamaha F425 V8 |
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Source: |
Aftermarket |
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Original: |
Lishui, China |
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Payment term: |
TT, LC |
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Delivery date: |
Negotiable |
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Packing: |
Export standard |
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Market: |
Asia/South America/Europe |
How It Mercury Outboard Thermostat Works
Cold Engine
The thermostat remains closed, allowing water to bypass the main cooling system (through bypass channels) so the engine warms up quickly.
Reaching Temperature
As the engine reaches its ideal temp (e.g., 140°F/60°C), the wax inside the thermostat melts, expands, and pushes the piston.
Opening
The piston pushes against the spring, opening the valve and allowing hot water to flow out of the engine, through the water jackets, and to the exhaust/telltale.
Regulation
The thermostat modulates its opening and closing to maintain a consistent engine temperature, preventing overheating.
Thermostat Element (Wax Pellet): A sealed brass or metal container filled with wax that expands when heated, pushing a piston to open the valve.
Spring: Provides resistance, helping the thermostat close when the engine cools and controlling the opening force.
Diaphragm & Washer: A rubber or composite seal that prevents water leakage around the moving parts and ensures proper pressure.
Housing/Cover: A metal casing, often with two joined covers, that seals the assembly onto the engine's cylinder head where the water jackets meet.
Gaskets: Seal the housing to the engine block, preventing water from escaping.
Maintain Of Mercury Outboard Thermostat
Inspect Annually/Every 100 Hours: Check along with oil changes.
Check for Debris
Look for shell fragments, corrosion, or blockage in the housing and thermostat itself, especially in saltwater.
01
Test Operation
Remove it, place in boiling water to see if it opens, then cool to see if it closes; if not, replace.
02
Clean Housing
Clean the old housing and mating surface thoroughly.
03
Replace
It's best to replace the thermostat and often the housing assembly.
04
Install Correctly
Ensure the spring end faces the engine block.
05
Shipping
We are one of the most credible mercury outboard thermostat manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale mercury outboard thermostat for sale here from our factory. For quotation, contact us now.
135hp thermostat, mercury outboard thermostat, 9 43014 18 3549 Thermostat for Mercury 6 125 HP Outboard
