Thermostat 3974823 of Cummins ISF3.8S3154 (SO10918) Automotive Engine NO. PART NUMBER PART NAME 3974823 Thermostat 1 3973834 Thermostat 2 3954829 Seal, Thermostat Remarks: (1) We can provide Thermostat 3974823, Thermostat Seal 3954829 engine parts, as well as the genuine Cummins engine. (2) Above we have listed engine parts Thermostat 3974823, Thermostat Seal 3954829 for the Cummins ISF3.8S3154 (SO10918) automotive engine, while if you need some other parts, …