Yamaha Thermostat used on F75, F90, F150, F200, F225, F250, F250B outboard motors. This thermostat is also used on F80 and F100 outboard motors manufactured from 2001 to current and VF200, VF225, VF250 (4.2L) outboard motors manufactured prior to 2010.
Certain thermostats also require a gasket; it is recommended to always replace the gasket when you change the thermostat.