QSB6.7 Cummins Temperature Switch 3408627/4327017 Parts Catalog Ref No. Part Name Part No. Required 1 Relay 3006300 1 2 Magnetic Switch 3050692 1 3 Temperature Switch 3408627/4327017 1 4 Engine Fan 3912753 1 5 Starting Aid 3915680 1 Above is the introduction of the Cummins Temperature Switch 3408627/4327017, while if you need Temperature Switch 3408627/4327017, complete Cummins engine or other …