Thermostat Kit For Mercury 3 & 4 Cyl 70 75 80 90 100 115 125HP 803061T1 18-3569

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Thermostat kit for Mercury

Reference to:

Mercury Marine: 803061T 1, 803061T1, Sierra: 18-3569, GLM: 13124



Fits the following models:

Mercury Marine & Mariner Outboard Motors:

  • 100 hp (4-Cylinder)(2-stroke); Serial # USA 0B209468 & Newer / Belgium 9523034 & Newer)
  • 115 hp (4-Cylinder)(2-stroke); Serial # USA 0C100000 & Newer / Belgium 9559771 & Newer)
  • 125 hp (4-Cylinder)(2-stroke); Serial # USA 0D283222 & Newer / Belgium 9793577 & Newer)
  • 70 hp (3-Cylinder)(2-stroke); Serial # USA 0A996142 & Newer / Belgium 9483121 & Newer)
  • 75 hp (3-Cylinder)(2-stroke); Serial # USA 0C222000 & Newer / Belgium 9589039 & Newer)
  • 80 hp (3-Cylinder)(2-stroke); Serial # USA 0A996142 & Newer / Belgium 9483121 & Newer)
  • 90 hp (3-Cylinder)(2-stroke); Serial # USA 0A996142 & Newer / Belgium 9483121 & Newer)




The role of the thermostat is extremely important, as it is the part that regulates the temperature of the engine, by allowing cooling fluid/raw water to cool down the engine. Therefore it is suggested to be checked regularly and replaced as per the manufacturer maintenance schedule.


The references that are listed here are trademarks that apply to the respective trademark owners. The references are used only for a reference purpose. Our product is compatible with these reference numbers. Please note that our product is an aftermarket product (non-OEM), unless otherwise stated.