How to Remove and Install a Radiator and Coolant Reservoir on Subaru Impreza?

Set the parking brake, raise the vehicle, and remove the splash shield. Drain the cooling system, remove the air intake duct, coolant reservoir, and disconnect radiator hoses. Disconnect fan connectors, remove radiator brackets, and lift out the radiator and cooling fans. Inspect the radiator for damage and clean with a hose. Check and replace radiator mounts if needed. Reinstall in reverse order, ensuring the radiator seats completely. Refill the cooling system with coolant, check for leaks, and adjust coolant level. Check transaxle fluid, remove and clean the coolant reservoir. Drain some coolant, remove the top engine cover and tank. Reinstall and refill with coolant.

Genuine Subaru Impreza Coolant Reservoir

Coolant Tank Reservoir

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16 Coolant Reservoirs found

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Subaru Impreza Tank Assembly Water
Part Number: 21132AA131
$119.89 MSRP: $166.52
You Save: $46.63 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank Assembly-Water; Reservoir Tank, Tank Assembly
- Replaces: 21132AA130, 21132AA074, 21132AA075
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002-2007 Subaru Impreza | STI, STI Limited, WRX, WRX TR | 2.0L H4 Turbo, 2.5L H4 Turbo
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Subaru Impreza Reserve Tank Assembly Radiator
Part Number: 45150AG001
$43.90 MSRP: $60.97
You Save: $17.07 (28%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Reserve Tank Assembly-Radiator; Expansion Tank, Reservoir, Reservoir Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2008-2016 Subaru Impreza | 2.5i, Base, Limited, Outback Sport, Premium, Sport, Sport Limited | 2.5L H4
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Subaru Impreza Reserve Tank Assembly Radiator
Part Number: 45150AE000
$57.01 MSRP: $79.18
You Save: $22.17 (28%)
ADD TO CART
Product Specifications
- Other Name: Reserve Tank Assembly-Radiator; Reservoir Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002-2007 Subaru Impreza | 25i, Outback, Outback Sport, RS, TS, WRX | 2.0L H4 Turbo, 2.5L H4
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Subaru Impreza Tank Assembly Water
Part Number: 21132AA121
$82.49 MSRP: $114.57
You Save: $32.08 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank Assembly-Water; Tank
- Replaces: 21132AA120
- 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
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Subaru Impreza Reserve Tank Assembly Radiator
Part Number: 45150FE000
$57.01 MSRP: $79.18
You Save: $22.17 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Reserve Tank Assembly-Radiator; Reservoir Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2003-2007 Subaru Impreza | STI, STI Limited, WRX, WRX TR | 2.0L H4 Turbo, 2.5L H4 Turbo
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Subaru Impreza Reserve Tank Assembly Radiator
Part Number: 45150AG011
$48.26 MSRP: $67.03
You Save: $18.77 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Reserve Tank Assembly-Radiator; Expansion Tank, Reservoir, Reservoir Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2008-2011 Subaru Impreza | 2.5 GT, STI, STI Special Edition, STI Sport, WRX, WRX Sport, WRXSS | 2.5L H4 Turbo
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Subaru Impreza Tank Assembly Water
Part Number: 21132AA140
$91.78 MSRP: $127.47
You Save: $35.69 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank Assembly-Water; Tank
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2008-2011 Subaru Impreza | STI, STI Special Edition, STI Sport | 2.5L H4 Turbo
View related parts
Subaru Impreza Reserve Tank Assembly
Part Number: 45151FA050
$51.83 MSRP: $71.98
You Save: $20.15 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Reserve Tank Assembly-Radiator; Reservoir Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1999-2001 Subaru Impreza | Brighton, L, Outback, RS, TS | 2.2L H4 Series, 2.5L H4 SOHC
View related parts
Subaru Impreza Tank Assembly Water
Part Number: 21132AA120
$82.49 MSRP: $114.57
You Save: $32.08 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank Assembly-Water
- Replaced by: 21132AA121
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2008-2009 Subaru Impreza | 2.5 GT, WRX, WRX Sport, WRXSS | 2.5L H4 Turbo
View related parts
Subaru Impreza Tank Assembly Water
Part Number: 21132AA075
$119.89 MSRP: $166.52
You Save: $46.63 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank Assembly-Water
- Replaced by: 21132AA131
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002-2004 Subaru Impreza | STI, WRX | 2.0L H4 Turbo, 2.5L H4 Turbo
View related parts
Subaru Impreza Reserve Tank Assembly
Part Number: 45151FA001
$51.83 MSRP: $71.98
You Save: $20.15 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Reserve Tank Assembly-Radiator; Reservoir
- Replaces: 45151FA000
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1993-1998 Subaru Impreza | Base, Brighton, L, L+, LE, LS, LX, Outback | 1.8L H4, 2.2L H4, 2.2L H4 (New EVAPO)
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Subaru Impreza Tank Reserve Assembly
Part Number: 45150FL00A
$24.61 MSRP: $34.18
You Save: $9.57 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Reserve Tank Assembly-Radiator
- 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 Tank Assembly Water
Part Number: 21132AA074
$119.89 MSRP: $166.52
You Save: $46.63 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank Assembly-Water
- Replaced by: 21132AA131
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002 Subaru Impreza | WRX | 2.0L H4 Turbo
View related parts
Subaru Impreza Tank Assembly Water
Part Number: 21132AA130
$119.89 MSRP: $166.52
You Save: $46.63 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank Assembly-Water
- Replaced by: 21132AA131
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Impreza | STI, WRX | 2.0L H4 Turbo, 2.5L H4 Turbo
View related parts
Subaru Impreza Reserve Tank Assembly
Part Number: 45151FA000
$51.83 MSRP: $71.98
You Save: $20.15 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Reserve Tank Assembly-Radiator
- Replaced by: 45151FA001
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1993 Subaru Impreza | Base, L, L+, LS | 1.8L H4
View related parts
Subaru Impreza Reserve Tank Assembly
Part Number: 45151FC000
Product Specifications
- Other Name: Reserve Tank Assembly-Radiator; Reservoir Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1998 Subaru Impreza | RS | 2.5L H4 DOHC

Subaru Impreza Coolant Reservoir

Our website stands as the go-to online destination for OEM Subaru Impreza Coolant Reservoir. With complete lines of genuine Subaru Impreza Coolant Reservoir 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 Coolant Reservoir Parts Questions & Experts Answers

Reserve Tank Assembly Radiator
45150AG011
Q: How to Remove and Install a Radiator and Coolant Reservoir on Subaru Impreza?
A: Set the parking brake, raise the vehicle, and remove the splash shield. Drain the cooling system, remove the air intake duct, coolant reservoir, and disconnect radiator hoses. Disconnect fan connectors, remove radiator brackets, and lift out the radiator and cooling fans. Inspect the radiator for damage and clean with a hose. Check and replace radiator mounts if needed. Reinstall in reverse order, ensuring the radiator seats completely. Refill the cooling system with coolant, check for leaks, and adjust coolant level. Check transaxle fluid, remove and clean the coolant reservoir. Drain some coolant, remove the top engine cover and tank. Reinstall and refill with coolant.