Thermostat C3928639 of Cummins 6CT8.3-GM115(SO20296) Marine Generator Engine NO. PART NUMBER PART NAME 1 C3928639 THERMOSTAT Remarks: (1) We can provide Thermostat C3928639 engine parts, as well as the genuine Cummins engine. (2) Above we have listed engine parts Thermostat C3928639 for the Cummins 6CT8.3-GM115(SO20296) marine generator engine, while if you need some other parts, please further contact our sales.