The water pump for the 1966 Citroën DS 19 is a vital component of the engine's cooling system. It circulates coolant through the engine and radiator, helping to maintain the engine at a safe operating temperature. This water pump is specifically designed and manufactured to meet the original specifications of the Citroën DS 19, ensuring reliability and long-lasting performance. Proper maintenance of the water pump is crucial to prevent engine overheating and to optimize performance.