This is a genuine TOYOTA thermostat, part number 90916-01122, also identified by the new part number 90916-01135 from Japan. It plays a crucial role in your vehicle's cooling system by controlling the flow of coolant to the radiator. By opening and closing at specific temperatures, the thermostat ensures your engine reaches and maintains its optimal operating temperature quickly after starting. This is vital for fuel efficiency, reduced emissions, and preventing engine damage caused by overheating or running too cold. Replacing your thermostat with a genuine TOYOTA part guarantees the precise fit and performance expected from your vehicle. It is engineered to meet the high standards of TOYOTA, ensuring reliability and longevity for your cooling system.
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