This ASHIKA thermostat, part code 38-CI-CI01, is designed to precisely control the engine's operating temperature. By opening and closing at specific temperatures, it regulates the flow of coolant through the radiator, ensuring the engine reaches and maintains its ideal working temperature. A properly functioning thermostat is crucial for fuel efficiency and reducing emissions. It prevents the engine from running too cold, which can lead to increased wear and poor performance, and also stops it from overheating, which can cause severe damage. Crafted with quality materials, this thermostat offers reliable performance and durability. It is a direct replacement for the original part, ensuring a proper fit and function within your vehicle's cooling system.