Thermostat 864493 is for MerCruiser sterndrive engines 4.3L, 4.5L, 5.0L, 5.7L and 6.2L MPI (Multi-Port Injection) with dry joint exhaust and closed cooling systems. It is a 170°F thermostat.
170°F thermostat
Easy to replace with common tools
See your owner's manual for removal of non-functioning thermostat and replacement of new thermostat
Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive