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

The thermostat located at the engine's front controls the temperature. Drain the cooling system, detach the thermostat housing cover, and check the thermostat's installation. Then, clean the housing and cover surfaces, install a new seal and thermostat, and secure the bolts to the proper torque specifications.

Genuine Subaru Impreza Thermostat

Engine Coolant Thermostat

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16 Thermostats found

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Subaru Impreza THERMOSTAT
Part Number: 21200AA072
$22.60 MSRP: $32.75
You Save: $10.15 (31%)
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:
- 1993-2011 Subaru Impreza | 2.5 GT, Base, Brighton, L, L+, LE, LS, LX, Outback, RS, STI, STI Limited, STI Special Edition, STI Sport, TS, WRX, WRX Sport, WRX TR, WRXSS | 1.8L H4, 2.0L H4 Turbo, 2.2L H4, 2.2L H4 (New EVAPO), 2.2L H4 Series, 2.5L H4, 2.5L H4 DOHC, 2.5L H4 SOHC, 2.5L H4 Turbo
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Subaru Impreza THERMOSTAT Gasket Assembly
Part Number: 21210AA080
$24.44 MSRP: $35.42
You Save: $10.98 (31%)
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:
- 2006-2011 Subaru Impreza | 2.5i, 25i, Outback, Outback Sport | 2.5L H4
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Subaru Impreza THERMOSTAT Gasket Assembly
Part Number: 21210AA190
$27.21 MSRP: $39.43
You Save: $12.22 (31%)
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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:
- 2012-2021 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza THERMO & Gasket Assembly
Part Number: 21210AA260
$40.19 MSRP: $58.25
You Save: $18.06 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermo And Gasket Assembly; Thermostat
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015-2016 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza THERMOSTAT Assembly
Part Number: 21200AA170
$21.22 MSRP: $30.75
You Save: $9.53 (31%)
Ships in 1-3 Business Days
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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:
- 2006-2011 Subaru Impreza | 2.5i, 25i, Outback, Outback Sport | 2.5L H4
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Subaru Impreza THERMO And Gasket Assembly
Part Number: 21210AA211
$29.33 MSRP: $42.50
You Save: $13.17 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat
- Replaces: 21210AA210
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2012-2014 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza THERMOSTAT Gasket Assembly
Part Number: 21210AA210
$29.33 MSRP: $42.50
You Save: $13.17 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermo And Gasket Assembly
- Replaced by: 21210AA211
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2012-2014 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza THERMOSTAT Cooling
Part Number: 73540FG010
$39.01 MSRP: $56.53
You Save: $17.52 (31%)
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:
- 2008-2011 Subaru Impreza | 2.5 GT, 2.5i, STI, STI Sport, WRX, WRX Sport, WRXSS | 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza THERMOSTAT
Part Number: 21200AA071
$22.60 MSRP: $32.75
You Save: $10.15 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermo Assembly
- Replaced by: 21200AA072
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1993-1995 Subaru Impreza | Base, L, L+, LE, LS, LX | 1.8L H4, 2.2L H4
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Subaru Impreza THMS THERMO Assembly
Part Number: 73540FG011
$39.01 MSRP: $56.53
You Save: $17.52 (31%)
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:
- 2008-2016 Subaru Impreza | 2.5 GT, 2.5i, Limited, Premium, STI, STI Sport, Sport Limited, WRX, WRX Sport, WRXSS | 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza THERMOSTAT Gasket Assembly
Part Number: 21210AA030
$23.99 MSRP: $34.77
You Save: $10.78 (31%)
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:
- 2002-2011 Subaru Impreza | 2.5 GT, Outback, RS, STI, STI Limited, STI Special Edition, STI Sport, TS, WRX, WRX Sport, WRX TR, WRXSS | 2.0L H4 Turbo, 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza THERMOSTAT Cooling
Part Number: 73540FG000
$40.99 MSRP: $59.40
You Save: $18.41 (31%)
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:
- 2008-2011 Subaru Impreza | 2.5i, Outback Sport, STI, STI Special Edition | 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza THMS THERMO Assembly
Part Number: 73540FJ000
$40.99 MSRP: $59.40
You Save: $18.41 (31%)
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:
- 2008-2016 Subaru Impreza | 2.5i, Base, Outback Sport, Premium, STI, STI Special Edition, Sport | 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza THERMOSTAT
Part Number: 21210AA300
$27.57 MSRP: $39.95
You Save: $12.38 (31%)
ADD TO CART
Product Specifications
- Other Name: Thermo And Gasket Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2017-2021 Subaru Impreza | Base, Limited, Premium, Sport
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Subaru Impreza THMS THERMO Assembly
Part Number: 73540FG001
$40.99 MSRP: $59.40
You Save: $18.41 (31%)
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 Subaru Impreza | 2.5i, Outback Sport, STI Special Edition | 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza THMS THERMO Assembly
Part Number: 73540FL00A
$6.80 MSRP: $9.85
You Save: $3.05 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat-Cooling
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2017-2021 Subaru Impreza | Base, Limited, Premium, Sport

Subaru Impreza Thermostat

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

THMS THERMO Assembly
73540FG011
Q: Where is the Thermostat Located and How to Replace It on Subaru Impreza?
A: The thermostat located at the engine's front controls the temperature. Drain the cooling system, detach the thermostat housing cover, and check the thermostat's installation. Then, clean the housing and cover surfaces, install a new seal and thermostat, and secure the bolts to the proper torque specifications.