•  A wax-type thermostat with a jiggle-pin has been adopted.

•  A two-stage type thermostat has been adopted that controls the amount of engine coolant flowing to the radiator according to the engine coolant temperature.

•  The thermostat body is made of stainless steel with excellent corrosion resistance.

•  When the engine coolant temperature reaches between 83.5—86.5 °C {183—187 °F}, the sub valve starts opening to let a small amount of engine coolant flow to the radiator. When the engine coolant temperature reaches between 86.5—89.5 °C {188—193 °F}, the main valve also starts opening with the sub valve to increase the engine coolant flow to the radiator, stabilizing the engine coolant temperature. If the engine coolant temperature falls to approx. 83 °C {181 °F} (Main valve), approx. 80 °C {176 °F} (Sub valve), the valves close to stop the flow of engine coolant from the engine.