Where is the Thermostat Located and How to Replace It on Subaru Forester?

The thermostat controls the engine's temperature. If working correctly, the temperature gauge should quickly reach the normal temperature. To replace, begin by lifting the vehicle's front, draining the cooling system, and placing a drain pan under the thermostat housing. Remove the housing cover. Note the thermostat's position then remove it. Clean the thermostat housing and cover and install a new seal. Place the thermostat correctly then position the housing cover correctly and screw the bolts. Reattach the radiator hose and fill the radiator up with coolant, then start the engine. Check for leaks.

Genuine Subaru Forester Thermostat

Engine Coolant Thermostat

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19 Thermostats found

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Subaru Forester THERMOSTAT
Part Number: 21200AA072
$23.58 MSRP: $32.75
You Save: $9.17 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermo Assembly
- Replaces: 21200AA071, 21200AA070
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1998-2013 Subaru Forester | Base, Forester Sports, L, L.L.Bean, S, X, XS, XT, XT Limited | 2.5L H4, 2.5L H4 DOHC, 2.5L H4 DOHC (New EVAPO), 2.5L H4 DOHC Turbo, 2.5L H4 SOHC, 2.5L H4 Turbo
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Subaru Forester THERMOSTAT Gasket Assembly
Part Number: 21210AA080
$25.50 MSRP: $35.42
You Save: $9.92 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermo And Gasket Assembly; Thermostat, Thermostat Unit
- 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 THERMOSTAT Gasket Assembly
Part Number: 21210AA190
$28.39 MSRP: $39.43
You Save: $11.04 (28%)
ADD TO CART
Product Specifications
- Other Name: Thermo And Gasket Assembly; Thermostat
- Replaced by: 21210AA191
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2014-2018 Subaru Forester | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Touring | 2.5L H4
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Subaru Forester THERMO & Gasket Assembly
Part Number: 21210AA181
$23.94 MSRP: $33.25
You Save: $9.31 (28%)
ADD TO CART
Product Specifications
- Other Name: Thermo And Gasket Assembly; Thermostat
- Replaces: 21210AA180
- 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 THERMOSTAT Assembly
Part Number: 21200AA170
$22.14 MSRP: $30.75
You Save: $8.61 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermo Assembly; Thermostat, Thermostat Cover Bolt
- 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 THERMO And Gasket Assembly
Part Number: 21210AA221
$28.39 MSRP: $39.43
You Save: $11.04 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat
- Replaces: 21210AA220
- 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
View related parts
Subaru Forester THERMOSTAT Gasket Assembly
Part Number: 21210AA180
$23.94 MSRP: $33.25
You Save: $9.31 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermo And Gasket Assembly
- Replaced by: 21210AA181
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2011-2014 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 THERMOSTAT Cooling
Part Number: 73540FG010
$40.70 MSRP: $56.53
You Save: $15.83 (28%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Thermostat-Cooling
- Manufacturer Note: ZXL/582624-6520
- Replaced by: 73540FG011
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2009-2011 Subaru Forester | X Limited, XT Limited | 2.5L H4 DOHC, 2.5L H4 DOHC Turbo, 2.5L H4 SOHC
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Subaru Forester THMS THERMO Assembly
Part Number: 73540FG011
$40.70 MSRP: $56.53
You Save: $15.83 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat-Cooling; Refrigerant Temp Sensor, Temp Sensor
- Replaces: 73540FG010
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2009-2018 Subaru Forester | 2.0XT Premium, 2.0XT Touring, 2.5i Limited, 2.5i Premium, 2.5i Touring, X Limited, XT Limited | 2.0L H4, 2.5L H4, 2.5L H4 DOHC, 2.5L H4 DOHC Turbo, 2.5L H4 SOHC
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Subaru Forester THERMOSTAT Gasket Assembly
Part Number: 21210AA030
$25.03 MSRP: $34.77
You Save: $9.74 (29%)
ADD TO CART
Product Specifications
- Other Name: Thermo And Gasket Assembly; Repair Kit, Thermostat, Thermostat Unit
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2003-2013 Subaru Forester | Forester Sports, L.L.Bean, X, XS, XT, XT Limited | 2.5L H4, 2.5L H4 DOHC Turbo, 2.5L H4 Turbo
View related parts
Subaru Forester THERMOSTAT Cooling
Part Number: 73540FG000
$42.77 MSRP: $59.40
You Save: $16.63 (28%)
ADD TO CART
Product Specifications
- Other Name: Thermostat-Cooling
- Manufacturer Note: ZXL/582552-1720
- Replaced by: 73540FJ000
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2009-2011 Subaru Forester | X, X Premium, XS, XT | 2.5L H4 DOHC, 2.5L H4 DOHC Turbo, 2.5L H4 SOHC
View related parts
Subaru Forester THMS THERMO Assembly
Part Number: 73540FJ000
$42.77 MSRP: $59.40
You Save: $16.63 (28%)
ADD TO CART
Product Specifications
- Other Name: Thermostat-Cooling; Temp Sensor
- Replaces: 73540FG001, 73540FG000
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2009-2018 Subaru Forester | 2.0XT Premium, 2.5i, 2.5i Premium, X, X Premium, XS, XT | 2.0L H4, 2.5L H4, 2.5L H4 DOHC, 2.5L H4 DOHC Turbo, 2.5L H4 SOHC
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Subaru Forester THERMO & GSKT Ay
Part Number: 21210AA290
$31.55 MSRP: $43.82
You Save: $12.27 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 21210AA291
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2019-2021 Subaru Forester | Base, Limited, Premium, Sport, Touring
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Subaru Forester THERMISTOR THERMO Ay
Part Number: 73540FL010
$41.33 MSRP: $57.40
You Save: $16.07 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2019-2021 Subaru Forester | Base, Limited, Premium, Sport, Touring
View related parts
Subaru Forester THERMISTOR THERMO Ay
Part Number: 73540FL000
$40.70 MSRP: $56.53
You Save: $15.83 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2019-2021 Subaru Forester | Base, Limited, Premium, Sport, Touring
View related parts
Subaru Forester THMS THERMO Assembly
Part Number: 73540FG001
$42.77 MSRP: $59.40
You Save: $16.63 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat-Cooling
- Replaced by: 73540FJ000
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2011-2012 Subaru Forester | X, X Premium, XT | 2.5L H4 DOHC, 2.5L H4 DOHC Turbo
View related parts
Subaru Forester THERMOSTAT Gasket Assembly
Part Number: 21210AA220
$28.39 MSRP: $39.43
You Save: $11.04 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermo And Gasket Assembly
- Replaced by: 21210AA221
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2014 Subaru Forester | 2.0XT Premium, 2.0XT Touring | 2.0L H4
View related parts
Subaru Forester THERMOSTAT Cooling
Part Number: 73540SA020
Product Specifications
- Other Name: Thermostat-Cooling; Thermistor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005-2008 Subaru Forester | X, XS | 2.5L H4
View related parts
Subaru Forester THERMO Assembly
Part Number: 73540SA000
Product Specifications
- Other Name: Thermostat-Cooling; Thermistor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2003-2006 Subaru Forester | X, XS | 2.5L H4

Subaru Forester Thermostat

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

THERMOSTAT Gasket Assembly
21210AA080
Q: Where is the Thermostat Located and How to Replace It on Subaru Forester?
A: The thermostat controls the engine's temperature. If working correctly, the temperature gauge should quickly reach the normal temperature. To replace, begin by lifting the vehicle's front, draining the cooling system, and placing a drain pan under the thermostat housing. Remove the housing cover. Note the thermostat's position then remove it. Clean the thermostat housing and cover and install a new seal. Place the thermostat correctly then position the housing cover correctly and screw the bolts. Reattach the radiator hose and fill the radiator up with coolant, then start the engine. Check for leaks.