An automotive water pump circulates liquid engine coolant through the engine block, cylinder head, radiator, and heater core. Powered by the engine timing belt or accessory belt, it prevents engine overheating during operation.
Water Pump Maintenance Tips
Replace water pump during timing belt replacement interval (typically every 80,000 km - 100,000 km).
Inspect weep hole under pump shaft for coolant drips indicating internal seal failure.
Always fill system with recommended 50:50 glycol/distilled water coolant mix to prevent impeller corrosion.