Light Switch - 4 Position International 1066 966 766 856 1466 756 826 656 1566 544 Hydro 100 1468 1456 1256 666 1568 686 1026 Hydro 70 2856 2756 2826 2656 21256 21456 2544 4186 4166 4386 21026 664 Fits 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, 21456 Replaces International OEM nos 403571R1, 403571R2 4 Position Rotary Light Switch OFF is considered 1 position 0.670" Outer Diameter Thread