shopping on iboats, they have two thermostats for my 89 force 125 o/b, <br /> 12.24 - 18-3556 Thermostat <br /> Compare at $14.40 <br /> Part # 18-3556 <br /> $26.27 - 18-3559 Thermostat <br /> Compare at $30.94 <br /> Part # 18-3559 <br /><br />being squeaky i like option number 1. But, is it the right one?.