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

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 Outback Coolant Reservoir

Coolant Tank Reservoir

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10 Coolant Reservoirs found

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Subaru Outback Tank Reserve Assembly
Part Number: 45150AN00A
$16.88 MSRP: $23.45
You Save: $6.57 (29%)
Ships in 1-2 Business Days
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Product Specifications
- 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
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Subaru Outback Tank Reserve
Part Number: 45150AE01A
$25.31 MSRP: $35.15
You Save: $9.84 (28%)
Ships in 1-2 Business Days
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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:
- 2001-2004 Subaru Outback | Flat6, Flat6 L.L.Bean, Flat6-S, SUS Flat6 | 3.0L H6
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Subaru Outback Tank Reserve
Part Number: 45150AG00A
$50.70 MSRP: $70.42
You Save: $19.72 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Reserve Tank Assembly-Radiator; Reservoir, Reservoir Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005-2019 Subaru Outback | 2.5GT Limited, 2.5GT Premium, 2.5i, 2.5i Base, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring, 3.0R, 3.0R Limited, 3.0R LL-Bean, 3.6R, 3.6R Limited, 3.6R Premium, 3.6R Touring, Base | 2.5L H4, 2.5L H4 DOHC, 2.5L H4 SOHC, 2.5L H4 Turbo, 3.0L H6, 3.6L H6
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Subaru Outback Tank Reserve
Part Number: 45150AE00A
$50.66 MSRP: $70.37
You Save: $19.71 (29%)
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:
- 2000-2004 Subaru Outback | Baja, Baja-S, Base, Brighton, Cold Weather, GT, L, Limited, L-S, SUS Limited | 2.5L H4
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Subaru Outback Tank Assembly Water
Part Number: 21132AA121
$82.49 MSRP: $114.57
You Save: $32.08 (28%)
Ships in 1-2 Business Days
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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:
- 2005-2009 Subaru Outback | GT, GT Limited, XT Limited | 2.5L H4 Turbo
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Subaru Outback Reserve Tank Assembly Radiator
Part Number: 45150FE000
$57.01 MSRP: $79.18
You Save: $22.17 (28%)
Ships in 1-2 Business Days
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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:
- 2004 Subaru Outback | Baja-B | 2.5L H4 Turbo
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Subaru Outback 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:
- 2005-2009 Subaru Outback | GT, GT Limited, XT Limited | 2.5L H4 Turbo
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Subaru Outback 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:
- 2004 Subaru Outback | Baja-B | 2.5L H4 Turbo
View related parts
Subaru Outback Tank Reserve
Part Number: 45150AG01A
$50.81 MSRP: $70.57
You Save: $19.76 (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:
- 2005-2009 Subaru Outback | GT, GT Limited, XT Limited | 2.5L H4 Turbo
View related parts
Subaru Outback Reserve Tank Assembly
Part Number: 45151AC000
$51.83 MSRP: $71.98
You Save: $20.15 (28%)
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:
- 1996-1999 Subaru Outback | Brighton, GT, L, LS, LS-I, Out Back, Post, SUS | 2.2L H4 , 2.2L H4 (New EVAPO), 2.2L H4 Series, 2.5L H4

Subaru Outback Coolant Reservoir

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

Tank Assembly Water
21132AA120
Q: How to Remove and Install a Radiator and Coolant Reservoir on Subaru Outback?
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.