How to Replace a Water Pump on Subaru Forester?

To remove the water pump, drain the cooling system, disconnect the radiator, and bypass hose. Remove the cooling fans, drivebelt cover, drive belts, timing belt, tensioner, idler pulley, and left camshaft sprocket. Remove the rear timing belt cover, tensioner bracket, and camshaft sensor. Loosen the water pump bolts, remove the pump and gasket, and clean the engine surface. Compare the new and old pumps, apply sealant to the new gasket and pump, and install. Apply RTV sealant to bolt threads, position the pump and gasket, and tighten bolts.

Genuine Subaru Forester Water Pump

H2O Pump

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10 Water Pumps found

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Subaru Forester Water Pump Assembly
Part Number: 21110AA690
$156.31 MSRP: $218.92
You Save: $62.61 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pump
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2011-2018 Subaru Forester | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Touring, X, X Limited, X Premium | 2.5L H4, 2.5L H4 DOHC
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Subaru Forester Water Pump Complete
Part Number: 21111AA250
$109.92 MSRP: $152.67
You Save: $42.75 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pump
- Manufacturer Note: OIL COOLER X
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2008-2013 Subaru Forester | Forester Sports, XT, XT Limited | 2.5L H4 DOHC Turbo, 2.5L H4 Turbo
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Subaru Forester Water Pump Complete
Part Number: 21111AA240
$117.79 MSRP: $163.60
You Save: $45.81 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pump
- Manufacturer Note: OIL COOLER O
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004-2007 Subaru Forester | XT | 2.5L H4 Turbo
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Subaru Forester Water Pump Complete
Part Number: 21111AA280
$138.26 MSRP: $192.03
You Save: $53.77 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pump
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2006-2010 Subaru Forester | Forester Sports, L.L.Bean, X, X Limited, XS | 2.5L H4, 2.5L H4 SOHC
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Subaru Forester Water Pump Assembly
Part Number: 21110AA710
$129.37 MSRP: $179.68
You Save: $50.31 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pump
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2014-2018 Subaru Forester | 2.0XT Premium, 2.0XT Touring | 2.0L H4
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Subaru Forester Water Pump
Part Number: 21111AA007
$87.24 MSRP: $121.17
You Save: $33.93 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pump Complete
- Replaces: 21111AA001, 21111AA004, 21111AA002, 21111AA006, 21111AA003, 21111AA005, 21111AA000
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1998-2005 Subaru Forester | Base, L, L.L.Bean, S, X, XS | 2.5L H4, 2.5L H4 DOHC, 2.5L H4 DOHC (New EVAPO), 2.5L H4 SOHC
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Subaru Forester Water Pump Complete
Part Number: 21111AA230
$119.60 MSRP: $166.12
You Save: $46.52 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pump
- Replaces: 21110AA380
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2003-2005 Subaru Forester | L.L.Bean, X, XS | 2.5L H4
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Subaru Forester Water Pump Complete
Part Number: 21111AA290
$130.26 MSRP: $180.92
You Save: $50.66 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Water Pump
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2006 Subaru Forester | L.L.Bean, X, XS | 2.5L H4
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Subaru Forester Water Pump
Part Number: 21111AA006
$87.24 MSRP: $121.17
You Save: $33.93 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pump Complete
- Replaced by: 21111AA007
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1998 Subaru Forester | Base, L, S | 2.5L H4 DOHC, 2.5L H4 DOHC (New EVAPO)
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Subaru Forester Pump Assembly Water
Part Number: 21110AA770
$121.51 MSRP: $168.77
You Save: $47.26 (28%)
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Product Specifications
- Other Name: Pump Ay Water
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2019-2021 Subaru Forester | Base, Limited, Premium, Sport, Touring

Subaru Forester Water Pump

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Subaru Forester Water Pump Parts Questions & Experts Answers

Water Pump Complete
21111AA250
Q: How to Replace a Water Pump on Subaru Forester?
A: To remove the water pump, drain the cooling system, disconnect the radiator, and bypass hose. Remove the cooling fans, drivebelt cover, drive belts, timing belt, tensioner, idler pulley, and left camshaft sprocket. Remove the rear timing belt cover, tensioner bracket, and camshaft sensor. Loosen the water pump bolts, remove the pump and gasket, and clean the engine surface. Compare the new and old pumps, apply sealant to the new gasket and pump, and install. Apply RTV sealant to bolt threads, position the pump and gasket, and tighten bolts.