QSX15 Cummins Thermostat 4318947 Parts Catalog Ref No. Part Name Part No. Required 1 Thermostat 4318947 2 Above is the introduction of the 4318947 Cummins Thermostat, while if you need Thermostat 4318947, complete Cummins engine or other Cummins product, please further consult our sales.