This thermostat has the operating temperature set lower than normal. It prevents engine power loss by minimizing rapid water-temperature rises under harsh conditions such as during circuit driving.

Spoon's thermostat commences opening at 68°C and is fully opened at 83°C, thus improving cooling performance. Normal-configuration is 78°C start temperature and 90°C fully opened.

Vehicle/Engine applications: 00-09 S2000 (F20C/F22C)