Where is the water pump for BMW N46 located?

[VonMiles]

The water pump and vacuum pump for the BMW N46 are located at the rear side of the engine, near the firewall. Working principle of the water pump: The engine drives the water pump bearing and impeller through the pulley, causing the coolant in the pump to rotate along with the impeller. Under centrifugal force, the coolant is thrown toward the edge of the pump housing, generating pressure before exiting through the outlet passage or pipe. The center of the impeller experiences reduced pressure as coolant is expelled, allowing coolant from the radiator to be drawn into the impeller through the inlet pipe due to the pressure difference, achieving continuous coolant circulation. Commonly used water pumps: Automotive engines widely employ centrifugal water pumps. Their basic structure consists of components such as the pump housing, connecting flange or pulley, pump shaft and bearings (or integrated shaft bearings), impeller, and sealing devices, making them essential parts of a vehicle.