Discover the 5137700320 4BD1 4BG1 Excavator Thermostat, designed for Hitachi EX100 and SK100 models. This OEM-quality thermostat ensures optimal engine performance with a 76°C rating. Perfect for EX100-2, EX100-3, EX120-2, EX120-3, and EX150 excavators. New condition with a 3-month warranty. Fast shipping available worldwide.