American Volt 160 Degree Electric Cooling Fan Thermostat Temperature Sensor Switch 3/8" Thread 160'F automotive engine grounding fan switch. 3/8" NPT brass thread-in temperature probe. Activates fan at 160 degrees and turns off at 145 degrees. Universal fit for any application with a 3/8" NPT port. Threads into engine block, radiator, manifold or water outlet.