Quick view Mishimoto Mishimoto Silver Racing Thermostat - 93-05 Lexus GS300, 01-05 Lexus IS300, 92-00 Lexus SC300 Mishimoto Silver Racing Thermostat - 93-05 Lexus GS300, 01-05 Lexus IS300, 92-00 Lexus SC300 The Mishimoto racing thermostat will promote greater cooling efficiency throughout your engine and will significantly lower high engine... $101.82 $122.99 Add to Cart