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