This is a genuine TOYOTA Reserve Tank Assembly, part number 1647031090, designed to meet the specific requirements of your TOYOTA vehicle. The reserve tank, also known as an expansion tank or overflow tank, plays a crucial role in your vehicle's cooling system. It holds excess coolant that expands when the engine heats up, preventing pressure buildup and potential damage to hoses and the radiator. When the engine cools down, the coolant is drawn back into the system, maintaining the optimal coolant level. Replacing a damaged or leaking reserve tank is essential for preventing overheating and ensuring the longevity of your engine. This assembly is manufactured to TOYOTA's high standards, guaranteeing a perfect fit and reliable performance.
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