How to Replace a Water Pump on Subaru Impreza?

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 Impreza Water Pump

H2O Pump

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

12 Water Pumps found

View related parts
Subaru Impreza Water Pump Assembly
Part Number: 21110AA690
$156.31 MSRP: $218.92
You Save: $62.61 (29%)
Ships in 1-3 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:
- 2012-2016 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
View related parts
Subaru Impreza Water Pump Complete
Part Number: 21111AA250
$109.92 MSRP: $152.67
You Save: $42.75 (28%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 2008-2011 Subaru Impreza | 2.5 GT, WRX, WRX Sport, WRXSS | 2.5L H4 Turbo
View related parts
Subaru Impreza Water Pump Complete
Part Number: 21111AA240
$117.79 MSRP: $163.60
You Save: $45.81 (28%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 2004-2011 Subaru Impreza | STI, STI Limited, STI Special Edition, STI Sport, WRX, WRX TR | 2.0L H4 Turbo, 2.5L H4 Turbo
View related parts
Subaru Impreza Water Pump Complete
Part Number: 21111AA280
$138.26 MSRP: $192.03
You Save: $53.77 (28%)
Ships in 1-3 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:
- 2006-2011 Subaru Impreza | 2.5i, 25i, Outback, Outback Sport | 2.5L H4
View related parts
Subaru Impreza Water Pump
Part Number: 21111AA007
$87.24 MSRP: $121.17
You Save: $33.93 (28%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 1993-2005 Subaru Impreza | Base, Brighton, L, L+, LE, LS, LX, Outback, RS, TS | 1.8L H4, 2.2L H4, 2.2L H4 (New EVAPO), 2.2L H4 Series, 2.5L H4, 2.5L H4 DOHC, 2.5L H4 SOHC
View related parts
Subaru Impreza Water Pump
Part Number: 21111AA026
$133.20 MSRP: $185.00
You Save: $51.80 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Water Pump Complete
- Replaces: 21111AA021, 21111AA022, 21111AA025, 21111AA023
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002-2004 Subaru Impreza | WRX | 2.0L H4 Turbo
View related parts
Subaru Impreza Pump Assembly Water
Part Number: 21110AA740
$116.33 MSRP: $161.57
You Save: $45.24 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Water Pump Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2017-2021 Subaru Impreza | Base, Limited, Premium, Sport
View related parts
Subaru Impreza Water Pump
Part Number: 21111AA003
$87.24 MSRP: $121.17
You Save: $33.93 (28%)
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:
- 1996-1997 Subaru Impreza | Brighton, L, LX, Outback | 1.8L H4, 2.2L H4, 2.2L H4 (New EVAPO)
View related parts
Subaru Impreza Water Pump
Part Number: 21111AA002
$87.24 MSRP: $121.17
You Save: $33.93 (28%)
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:
- 1993-1996 Subaru Impreza | Base, Brighton, L, L+, LE, LS, LX, Outback | 1.8L H4, 2.2L H4
View related parts
Subaru Impreza Water Pump
Part Number: 21111AA004
$87.24 MSRP: $121.17
You Save: $33.93 (28%)
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 Impreza | Brighton, L, Outback | 1.8L H4, 2.2L H4, 2.2L H4 (New EVAPO)
View related parts
Subaru Impreza Water Pump
Part Number: 21111AA006
$87.24 MSRP: $121.17
You Save: $33.93 (28%)
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:
- 1997-1998 Subaru Impreza | Brighton, L, Outback, RS | 1.8L H4, 2.2L H4 (New EVAPO), 2.5L H4 DOHC
View related parts
Subaru Impreza Water Pump
Part Number: 21111AA005
$87.24 MSRP: $121.17
You Save: $33.93 (28%)
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 Impreza | Brighton, L, Outback | 1.8L H4, 2.2L H4, 2.2L H4 (New EVAPO)

Subaru Impreza Water Pump

Our website stands as the go-to online destination for OEM Subaru Impreza Water Pump. With complete lines of genuine Subaru Impreza Water Pump available at unbeatable market prices, we ensure top quality, reliability, and durability. Each part comes backed by the manufacturer's warranty, reinforcing your trust in our offerings.

Subaru Impreza Water Pump Parts Questions & Experts Answers

Water Pump
21111AA026
Q: How to Replace a Water Pump on Subaru Impreza?
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.