HOTSTART CB115100-000 Engine Heater - Weather tight Coolant preheater - Original - 1 Year warranty! Pre-Heat: Diesel and Gas engines, construction equipment, trucks, marine and industrial applications Heating Fluid: Engine Coolant, Water, other - No pump needed (thermosiphon principle) Engine Displacement: 350  500 CID (5.7  8.2L) Volts: 120v - kW: 1.5 - AMPS: 12.5 - 60Hz -Single Phase Temperature Range: ON: 100F (38C)  OFF 120F (49C)