Sierra 18-43052 Mercury Thermostat KitSierra replacement thermostat kit for Mercury Outboards. Temperature Rating: 120F; Application Info: Fits Mercury 6-25 hp 2 cycle outboardsInterchangeable with: Mallory; 9-43052; Mercury Marine; 14586A3; 75692A10; 75692A11; 75692A9; Kit Includes: Thermostat gasket; 18-0182 Thermostat gasket; 18-0323 Thermostat cover gasket; 18-3549 Thermostat;