This ASHIKA thermostat, part code 38-04-401, is designed to precisely control the flow of coolant within your vehicle's engine. By opening and closing at specific temperatures, it maintains the engine within its ideal operating range, preventing both overheating and undercooling. Proper functioning of the thermostat is crucial for engine efficiency, fuel economy, and longevity. A faulty thermostat can lead to significant engine damage, increased emissions, and poor performance. This ASHIKA component is engineered for reliability and consistent performance. Ensure your engine's cooling system operates at peak efficiency with this high-quality thermostat. It is a direct fit for compatible models, making installation straightforward.