About this item Perfect Fit ===== OE# 16670-21010. Replace OE# 601-021, EHV116. Compatible with: For 2004 – 2009 Toyota Prius 1.5L L4. Please check the second main picture to confirm coolant control valve whether compatible with your car. Efficient temperature control ===== This coolant control valve regulates the flow of coolant, reliably replaces the heating control valve, controls the flow of coolant from the engine to the heating core, regulates the engine cooling intensity to maintain the optimal engine temperature, ensures efficient engine performance and prevents overheating, regulates the engine cooling intensity, it can effectively protect your engine. High quality replacement ===== Coolant control water valves are made of high quality materials to prevent corrosion, withstand high and low temperatures, ensure product quality and extend service life, this coolant water valve design meets or exceeds OEM standards. It provides a reliable and durable alternative to the original parts. Easy Replacement ===== With its direct replacement design, this valve can be easily installed without the need for modifications or specialized tools. It simplifies the process of maintaining and repairing your vehicle’s cooling system. Package included: Coolant Water Valve x1. After-sales service ===== We provide 24-hour customer service and 1-year product service, if you encounter product quality, product installation and other problems, please feel free to contact us.