Compatible with International Tractor(s) Hydro 70, Hydro 100, 544, 656, 664, 666, 686, 756, 766, 826, 856, 966, 1026, 1066, 1256, 1456, 1466, 1468, 1566, 1568, 2544, 2656, 2756, 2826, 2856, 4166, 4186, 4366, 4386, 21026, 21256, 21456Replaces International OEM Number(s) 403571R1, 403571R20.670" Outer Diameter ThreadPosition: 4Switch Type: RotaryTerminals: 5WARNING: Cancer and Reproductive harm. See www.P65Warnings.ca.gov