BMW E90 / E60 2.5 N52B engine water pump is an electric water pump designed to circulate coolant throughout the cooling system, ensuring stable engine operating temperatures.

🔧 Description:

• Fits BMW models with N52B25 2.5L inline-6 engine (commonly found in E90 325i / E60 523i).
• Unlike older mechanical pumps, this is a computer-controlled electric water pump, mounted low on the engine block.
• Works together with the engine control unit (DME) to regulate coolant flow based on temperature, load, and driving conditions.
• Provides higher cooling efficiency, quicker warm-up, and variable pump speed.
• Usually paired with an electronic thermostat.

📍 Common issues:

• Pump failure often leads to overheating warnings.
• Lifespan around 80,000–120,000 km before replacement is usually needed.

⚙️ Specs:

• Voltage: 12V electric
• Location: Front of engine, near crankshaft area
• Material: Aluminum housing with plastic impeller

Would you like me to also list the compatible part numbers (OE numbers) for this water pump?