Zerostart 3500022 Engine Block Immersion Heater for Cummins, Paccar, 3/4" NPT Thread | CSA Approved | 120 Volts | 750 Watts Ensure quick winter starts and reduce engine wear For Cummins, Paccar. See Zerostart catalog for specific applications. 3/4" NPT Thread 6' cord included Volts: 120 | Watts: 750 | Plug Type: 120 Volt, 15 Amp (Type A)