Genuine OEM Toyota Water By-Pass Hose, part number 162670T160. This hose facilitates the flow of coolant to bypass the radiator, primarily to help the engine reach its optimal operating temperature more quickly. It is part of the engine's cooling system. Manufactured from robust, temperature-resistant materials to ensure longevity and reliable performance. Genuine OEM hoses are designed for exact fit and proper coolant flow, contributing to efficient engine warm-up and overall thermal management.