Parts Geek - For 1954 Studebaker 3R11 Thermostat 16842GGSV 4.0L 6 Cyl. 1954 Studebaker 3R11 4.0L 6 Cyl. Larger opening for increased coolant flow. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.