21111AA331 Subaru PUMP COMPL-WATER, Price: 125.46$, Weight: 1.476kg


Make Number Name Availability Weight, kg Ship in, Days Price

Subaru

21111AA331

PUMP COMPL-WATER

0

1.476

7-10

125.46$

Not Available

Originals

Make Number Name Availability Weight, kg Processing, days Price  
Subaru
21111AA331 
PUMP COMPL-WATER
5
1.697
2-3
118.13$
 

Substitutions

Make Number Name Availability Weight, kg Processing, days Price  
Subaru
21111AA330 
PUMP COMPL-WATER
0
1.719
-
139.89$
Not Available

Compatibility

BodyEngineVehicle GradeMarketModel Year FromModel Year ToTrainDiagram
ワゴン2.0L EMPI DOHC NAIS (D-=ISAフクム)Japan04.200808.2009フルタイム4リンクドウ View
BodyEngineVehicle GradeMarketModel Year FromModel Year ToTrainDiagram
ワゴン2.0L EMPI DOHC NAXS プラチナ(-B)Japan09.200709.2010フルタイム4リンクドウ View
BodyEngineVehicle GradeMarketModel Year FromModel Year ToTrainDiagram
XUV1.5L EMPI DOHC NA15IJapan04.201011.2011フルタイム4リンクドウ View

Engine Coolant Circulation Pump Assembly 💧

This cooling pump is a key part of the Subaru boxer engine cooling system. It is needed to keep coolant moving through the engine block, cylinder heads, and radiator, so heat is carried away before it can damage gaskets and metal parts. A healthy pump helps the engine reach stable temperature fast and stay there in traffic, on hills, or with A/C running.

How It Works ⚙️

The pump is driven by the engine and spins an internal impeller. As the impeller rotates, it pulls coolant from the radiator side and pushes it through the cooling passages. A sealed bearing supports the shaft, while the mechanical seal prevents leaks. When pressure and flow are correct, the heater works better and temperature stays steady.

Signs of Failure & What Can Happen 🔥

If the pump is worn or broken, coolant flow drops. Common symptoms include coolant leaks from the weep area, grinding noise from the bearing, overheating at idle, weak cabin heat, and fluctuating temperature. Ignoring it can lead to severe overheating, warped heads, blown head gasket, and engine failure.

Compatible Models ✅

  • Impreza
  • Forester
  • Exiga