TISCO® Engine Block Heater for John Deere, AR50518

Engine coolant heater 12 inch cord. 1000 watt, 120 volt. Fits 2 inch diameter smooth bore core hole. For 400 and 500 series engines. Tractors: 4000, 4020, 4040, 4230, 4240, 4320, 4430, 4440, 4520, 4620, 4630, 4640, 4840, 5020, 6030, 7020, 7520, 8430, 8440, 8630, 8640; Combines: 6620, 7700, 7720, 8820.