This is a Toyota coolant control valve, part number 16671-25010. It regulates the flow of coolant to maintain optimal engine temperature and prevent overheating. It is a direct replacement for the original equipment manufacturer (OEM) part. It is compatible with various Toyota and Lexus models, including the 2018-2023 Camry, 2019-2023 RAV4, and 2020-2023 Highlander.