160 Degree Thermostat Kit | Sierra 18-3667

160 degree thermostat used on Mercruiser inline 4 cylinder fresh water cooled marine engines.

Fits Mercruiser model 165 224CID fresh water cooled engines with serial number range B434941 to B774251
Fits Mercruiser model 170 224CID fresh water cooled engines from 1985 to 1986 with serial number range 6916779 to B434940
Fits Mercruiser model 180 224CID fresh water cooled engines with serial number range B436391 to B775248
Fits Mercruiser model 470 224CID fresh water cooled engines from 1983 to 1984 with serial number range 6218037 to 6916778
Kit includes 18-3555 160 degree thermostat and 18-2555 gasket