KIM HOTSTART ENGINE HEATER TPS151GT12-000 COOLANT PRE-Heater - Original - 1 Year Warranty Pre-Heat: Diesel and Gas engines, construction equipment, trucks, marine and industrial applications Heating Fluid: Engine Coolant, Water, other Fluid Capacity: 0.11 gal (0.42 L) No pump needed (thermosiphon principal) Volts: 120v - Watts: 1500 - AMPS: 12.5 - 60Hz Temperature Range: ON: 120F (49C)  OFF 140F (60C)