PUMP ASSY-WATER
Part number: 21010AA527
Availability: 6
Weight, kg: 2.2
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Make: Nissan
Made in: Japan

PUMP ASSY-WATER
Part number: 21010AA527
Availability: 6
Weight, kg: 2.2
Processing: 2-3 days
Make: Nissan
Made in: Japan

Substitutions
WATER PUMP
Part number: GWN77A
Availability: 9
Weight, kg: 1.838
Processing: 4-5 days
Make: GMB
Made in: Japan

Engine Cooling Water Pump Assembly
This cooling pump is a key part of the engineโs cooling system. It is needed to keep coolant moving between the engine block and radiator, so heat is carried away before it can damage gaskets, seals, and metal parts ??.
How It Works
Inside the housing, an impeller spins with engine drive. As it turns, it pulls coolant in and pushes it through the cooling passages. Steady circulation helps the thermostat and radiator do their job, keeping temperature stable in traffic, on hills, and at highway speed.
Why Replacement Matters
Over time, bearings can wear, seals can leak, or the impeller can corrode. A weak pump cannot maintain proper flow, so the engine starts running hotter than normal.
Signs a Pump Is Failing
- Coolant leak around the pump area
- Grinding/whining noise from bearing wear
- Overheating, especially at low speed
- Low coolant level with no visible hose damage
If the Pump Breaks
If this part fails completely, coolant circulation stops. That can lead to rapid overheating, warped cylinder head, blown head gasket, and possible engine seizure ??. Replacing it in time protects the whole cooling system and extends engine life.
Compatibility
- 6 Wagon
