Description

160 Degree Thermostat Kit | Sierra 18-3644

160 degree thermostat kit for Mercruiser 4.3L and 4.3LX freshwater cooled engines from serial number F001220 & up.

• Fits Mercruiser 4.3L and 4.3LX closed cooled marine engines from serial number range F001220 & up
• Kit includes a 18-3649 160 degree thermostat, 18-2553 cover gasket and 18-2917 cover gasket
• Replaces Mercury 807252T2