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Thermostat for Yanmar 3JH 4JH 76.5° RO: 129470-49801
Thermostat for Yanmar 3JH 4JH 76.5° RO: 129470-49801 Thermostat for Yanmar 3JH 4JH 76.5° RO: 129470-49801

Thermostat for Yanmar 3JH 4JH 76.5° RO: 129470-49801

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Poseidon Marine thermostat. 
Reference to OEM part number: RO: 129470-49801

Rated Temperature: 76.5°C 

Suitable for the following Yanmar engines 

  • 3JH2M, E, L, -TCE
  • 3JH25A
  • 3JH3, E-YEU-E
  • 3JH4E
  • 3JH5AE, E
  • 4JH
  • 4JH2E, -HTE, -TE, -UTE
  • 4JH3-DTE, -HTE, -TE
  • 4JH4E, AE
  • 4JH5E
  • 4JHE, -HTE, -HTZ,
    -HTZAE, -TE, -TZ

Gaskets are sold individually within our website.

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.