Thermostat set 140° suitable for Mercruiser/OMC 4 & 6 cylinders series 4 & 6 cyl inline replaces OEM: suitable for Mercruiser: 59078, 59078A1, 59078B, 59078Q3, 59078T3, 59078T4, F8, F84068-1, F84068-2, F85068-2 OMC/Johnson/Evinrude: 0508543, 0508617