How to Replace a Water Pump on Subaru Outback?

Drain the cooling system and disconnect the radiator and bypass hoses from the water pump. Remove the cooling fans, drivebelt cover, drivebelts, timing belt, and crankshaft pulley. Remove the timing belt tensioner, idler pulley(s), and on turbo models, the CMP sensor and left side camshaft sprockets. Remove the left side rear timing belt cover and belt tensioner bracket. Loosen the water pump bolts, remove the pump and gasket, and clean the engine mounting surface. Ensure bolt threads and engine holes are corrosion-free. Compare the new and old pump, apply sealant to the new gasket and install it on the pump. Apply RTV sealant to bolt threads, align the pump and gasket on the engine, and tighten the bolts in 1/4-turn increments. Reattach hoses, refill the cooling system, and check drivebelt tension.

Genuine Subaru Outback Water Pump

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13 Water Pumps found

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Subaru Outback Water Pump Assembly
Part Number: 21110AA690
$149.74 MSRP: $218.92
You Save: $69.18 (32%)
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:
- 2013-2019 Subaru Outback | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring | 2.5L H4, 2.5L H4 DOHC
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Subaru Outback Water Pump Complete
Part Number: 21111AA240
$112.88 MSRP: $163.60
You Save: $50.72 (31%)
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:
- 2004-2009 Subaru Outback | Baja-B, GT, GT Limited, XT Limited | 2.5L H4 Turbo
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Subaru Outback Water Pump Complete
Part Number: 21111AA280
$132.50 MSRP: $192.03
You Save: $59.53 (31%)
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:
- 2006-2009 Subaru Outback | 2.5i, 2.5i Base, 2.5i Limited, Base | 2.5L H4
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Subaru Outback Water Pump Assembly
Part Number: 21110AA360
$123.68 MSRP: $179.25
You Save: $55.57 (31%)
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:
- 2001-2009 Subaru Outback | 3.0R, 3.0R Limited, 3.0R LL-Bean, Flat6, Flat6 L.L.Bean, Flat6-S, SUS Flat6 | 3.0L H6
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Subaru Outback Water Pump Complete
Part Number: 21111AA320
$112.64 MSRP: $163.25
You Save: $50.61 (31%)
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:
- 2010-2012 Subaru Outback | 2.5i, 2.5i Limited, 2.5i Premium | 2.5L H4 SOHC
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Subaru Outback Water Pump Assembly
Part Number: 21110AA510
$154.79 MSRP: $226.30
You Save: $71.51 (32%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Water Pump
- Replaced by: 21110AA511
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2010-2019 Subaru Outback | 3.6R, 3.6R Limited, 3.6R Premium, 3.6R Touring | 3.6L H6
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Subaru Outback Water Pump
Part Number: 21111AA110
$107.12 MSRP: $155.25
You Save: $48.13 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Water Pump Complete
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1997-2005 Subaru Outback | 2.5i, 2.5i Limited, Baja, Baja-S, Base, Brighton, Cold Weather, GT, L, Limited, LS, L-S, LS-I, Out Back, Post, SUS, SUS Limited | 2.2L H4 , 2.2L H4 (New EVAPO), 2.2L H4 Series, 2.5L H4
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Subaru Outback Water Pump Complete
Part Number: 21111AA380
$131.61 MSRP: $190.73
You Save: $59.12 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Water Pump
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2010-2012 Subaru Outback | 2.5GT Limited, 2.5GT Premium | 2.5L H4 Turbo
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Subaru Outback Water Pump
Part Number: 21111AA003
$83.61 MSRP: $121.17
You Save: $37.56 (31%)
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:
- 1996-1997 Subaru Outback | Brighton, GT, L, LS, LS-I, Out Back, Post, SUS | 2.2L H4 , 2.2L H4 (New EVAPO), 2.5L H4
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Subaru Outback Water Pump
Part Number: 21111AA002
$83.61 MSRP: $121.17
You Save: $37.56 (31%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 1996 Subaru Outback | Brighton, GT, L, LS, LS-I, Out Back, Post | 2.2L H4 , 2.2L H4 (New EVAPO), 2.5L H4
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Subaru Outback Water Pump
Part Number: 21111AA004
$83.61 MSRP: $121.17
You Save: $37.56 (31%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 1997 Subaru Outback | Brighton, GT, L, LS, LS-I, Out Back, Post, SUS | 2.2L H4 , 2.2L H4 (New EVAPO), 2.5L H4
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Subaru Outback Water Pump
Part Number: 21111AA005
$83.61 MSRP: $121.17
You Save: $37.56 (31%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 1997 Subaru Outback | Brighton, GT, L, LS, LS-I, Out Back, Post, SUS | 2.2L H4 , 2.2L H4 (New EVAPO), 2.5L H4
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Subaru Outback Pump Assembly Water
Part Number: 21110AA770
$116.45 MSRP: $168.77
You Save: $52.32 (31%)
ADD TO CART
Product Specifications
- Other Name: Pump Ay Water
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2020-2021 Subaru Outback | 2.4R F/R-O, 2.4R Limited, 2.4R Touring, 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring | 2.4L H4 DIT, 2.5L H4 DI

Subaru Outback Water Pump

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Subaru Outback Water Pump Parts Questions & Experts Answers

Water Pump Complete
21111AA280
Q: How to Replace a Water Pump on Subaru Outback?
A: Drain the cooling system and disconnect the radiator and bypass hoses from the water pump. Remove the cooling fans, drivebelt cover, drivebelts, timing belt, and crankshaft pulley. Remove the timing belt tensioner, idler pulley(s), and on turbo models, the CMP sensor and left side camshaft sprockets. Remove the left side rear timing belt cover and belt tensioner bracket. Loosen the water pump bolts, remove the pump and gasket, and clean the engine mounting surface. Ensure bolt threads and engine holes are corrosion-free. Compare the new and old pump, apply sealant to the new gasket and install it on the pump. Apply RTV sealant to bolt threads, align the pump and gasket on the engine, and tighten the bolts in 1/4-turn increments. Reattach hoses, refill the cooling system, and check drivebelt tension.