Mercury Thermostat 59078T3 helps protect your engine by properly regulating operating temperature.
For use in older MerCruiser inline 4- and 6-cylinder engines made by General Motors
Includes thermostat and cork thermostat gasket
Easy to replace with common tools
See your owner's manual for removal of non-functioning thermostat and installation of new thermostat
Mercury parts and accessories are backed by decades of experience in engineering, testing and manufacturing to provide the best fit, function and performance