Genuine Mercedes-Benz part. Taken from E class 2014. 42,000 miles. Tested and working perfect. The Engine Water Pump for Mercedes W204, W212, and W221 models with the OM651 engine is a crucial component for maintaining proper engine cooling. Made by Mercedes-Benz, this water pump, with the manufacturer part number A6512001901, ensures efficient circulation of coolant throughout the engine.