Genuine OEM Mercedes-Benz Top Coolant Pump, part number A000500550080. This pump circulates coolant throughout the engine cooling system. It is located on the left side of the engine assembly. The pump has a length of 0.14 meters, a width of 0.11 meters, and a height of 0.11 meters. Genuine OEM coolant pumps are engineered with precise tolerances and robust materials to ensure reliable operation, preventing engine overheating and maintaining optimal operating temperatures.