Thermostat Kit for Volvo Penta 7.4 8.1 8.2 Big Block 60° RO: 3853983

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Thermostat kit for Volvo Penta

Poseidon Marine thermostat kit.


Reference to OEM part number:

  • RO: 3853983
  • Rated Temperature: 60°C 140°F

Suitable for the following Volvo Penta engines:


  • 7.4-BY 7.4-EF 7.4-LK 7.4-WT 7.4Gi-BY 7.4Gi-EF 7.4Gi-HU 7.4Gi-LK 7.4Gi-NC 7.4Gi-WT 7.4GiPEFS
  • 7.4GL-BY 7.4GL-HU 7.4GL-LK 7.4GL-MD 7.4GL-NC
  • 7.4GSi-BY 7.4GSi-EF 7.4GSi-HU 7.4GSi-LK 7.4GSi-NC 7.4GSi-WT 7.4GSiPEFS
  • 8.1Gi-A 8.1Gi-B 8.1Gi-C 8.1Gi-D 8.1Gi-E 8.1Gi-F 8.1Gi-G 8.1Gi-H 8.1Gi-J 8.1GiC-400-J 8.1GiC-400-Q 8.1GiCE-400-J 8.1GiCE-M 8.1GiCE-P 8.1GiCE-Q
  • 8.1GiE-J 8.1GiE-K 8.1GiE-M 8.1GiE-P 8.1Gii-A 8.1Gii-B 8.1Gii-C 8.1Gii-D 8.1Gii-E 8.1Gii-G 8.1Gii-H 8.1GSi-A 8.1GSii-A
  • 8.1GXi-A 8.1GXi-B 8.1GXi-C 8.1GXi-D 8.1GXi-E 8.1GXi-F 8.1GXi-G 8.1GXi-J 8.1GXiE-J 8.1GXiE-K 8.1GXiE-M 8.1GXiE-P 8.1GXii-A 8.1GXii-B 8.1GXii-C 8.1GXii-D 8.1GXii-F 8.1GXii-G
  • 8.1OSi-A 8.1OSi-B 8.1OSi-C 8.1OSi-D 8.1OSi-J 8.1OSiE-J
  • 8.2Gi-EF 8.2Gi-WT 8.2GL-HU 8.2GL-MD 8.2GSi-BY 8.2GSi-EF 8.2GSi-LK 8.2GSi-NC 8.2GSi-WT
  • DPX375-A DPX375-B DPX375-BF DPX385 DPX385XEFS DPX415XEFS DPX420-A DPX420-B DPX420-F


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.