Compare Maximum number of 4 items selected Zerostart 400 Watt Engine Heater - 3100152 Part #: 3100152 Line: ZRO Zerostart 400 Watt Engine Heater 1 Year Limited Warranty Wattage (W): 400 Watt Voltage (V): 115 Volt Amperage (A): 3.5 Amp Thread Size: M33 Engine Heater Type: Threaded Immersion Show More Show Less