Thermostat Kit Compatible With Mercruiser 4 Cyl 3.7L SternDrive 160°F 71°C 99155A1 27-33918 991551 99155T1 99155T2 863358T 18-3568(Silver)

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Temperature Rating: This thermostat kit is rated for 160°F (71°C) as specified in the title. Model Compatibility: Fits Mercruiser 4-cylinder 3.7L SternDrive engines as explicitly stated in the title. Part Number Compatibility: Replaces part numbers 99155A1, 27-33918, 991551, 99155T1, 99155T2, 863358T, and 18-3568 listed in the title. Function: Restores thermostat function for temperature regulation in compatible Mercruiser 3.7L SternDrive systems. Application Type: Designed as a direct replacement thermostat kit for use in marine stern drive applications only.