UT1256 Thermostat--190 Degree--Diesel Tractors

Replaces number 684739C1

Fits: 666 (W/ D312 Eng.), 686 (W/ D312 Eng.), 766, 886, 966, 986, 1066, 1086, 1466, 1486, 1566, 1586
3388, 3488, 3588, 3688, 3688, 3788, 4166, 4186, 4366, 4386, 5088, 5288, 5488, 6388, 6588, 6788