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This radiator coolant overflow reservoir is a high-quality replacement for the Cadillac Seville, engineered to hold excess coolant and regulate engine temperature efficiently. Built to meet OEM standards, it ensures proper fluid management, prevents leaks, and protects the engine from overheating. Made from durable materials, the reservoir offers long-lasting reliability and a precise fit. Easy to install, it restores the cooling system’s functionality, keeping your Cadillac Seville running safely and efficiently.