FSU-8

The FSU-8 sensing unit is a thermostat designed for HOTSTART CB, CL, SB, SL, and WL Series engine heaters. Its function is to automatically turn the heater on and off based on coolant temperature, ensuring efficient preheating without unnecessary energy consumption.

Operating within its factory-calibrated temperature range, this unit protects the system against overheating and extends the heater's service life. It's a genuine HOTSTART replacement part, ideal for preventive maintenance or direct replacement.