Genuine Subaru Impreza WRX Thermostat

Engine Coolant Thermostat

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9 Thermostats found

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Subaru Impreza WRX THERMOSTAT Gasket Assembly
Part Number: 21210AA030
$19.67 MSRP: $28.50
You Save: $8.83 (31%)
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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:
- 2002-2014 Subaru Impreza WRX | 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 WRX 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:
- 2002-2014 Subaru Impreza WRX | 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 WRX THERMOSTAT Gasket Assembly
Part Number: 21210AA080
$18.40 MSRP: $26.67
You Save: $8.27 (32%)
Ships in 1-3 Business Days
ADD TO CART
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 WRX | 2.5i, 25i, Outback, Outback Sport | 2.5L H4
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Subaru Impreza WRX THMS THERMO Assembly
Part Number: 73540FG011
$39.79 MSRP: $57.67
You Save: $17.88 (31%)
Ships in 1-3 Business Days
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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:
- 2008-2014 Subaru Impreza WRX | 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 WRX THERMOSTAT Assembly
Part Number: 21200AA170
$17.25 MSRP: $25.00
You Save: $7.75 (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 WRX | 2.5i, 25i, Outback, Outback Sport | 2.5L H4
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Subaru Impreza WRX THERMOSTAT Cooling
Part Number: 73540FG000
$41.80 MSRP: $60.58
You Save: $18.78 (31%)
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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 WRX | 2.5i, Outback Sport, STI, STI Special Edition | 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza WRX A/C Evaporator Temperature Sensor
Part Number: 73540FJ000
$41.80 MSRP: $60.58
You Save: $18.78 (31%)
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Product Specifications
- Other Name: HVAC Evaporator Temperature Switch; Temp Sensor
- Replaces: 73540FG001, 73540FG000
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2008-2014 Subaru Impreza WRX | 2.5i, Outback Sport, STI, STI Special Edition | 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza WRX THERMOSTAT Cooling
Part Number: 73540FG010
$39.79 MSRP: $57.67
You Save: $17.88 (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 WRX | 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 WRX THMS THERMO Assembly
Part Number: 73540FG001
$41.80 MSRP: $60.58
You Save: $18.78 (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:
- 2011-2012 Subaru Impreza WRX | 2.5i, Outback Sport, STI Special Edition | 2.5L H4, 2.5L H4 Turbo

Subaru Impreza WRX Thermostat

The Subaru Impreza WRX Thermostat controls the flow of coolant to maintain the engine temperature within the sweet spot of power. The Impreza WRX lineup derives performance confidence from the Thermostat. Positioned between the block and radiator, the unit remains shut until the wax pellet reaches its set point. Subsequently, the Thermostat opens and coolant rushes through to shed heat. This two-stage action ensures protection of the high-revving boxer core. This one part fits first generation to current Impreza WRX trims without fussy modifications because every Subaru since the early 2000s has a similar coolant circuit, offering a direct swap that restores factory behavior. The opening of the Thermostat is controlled as and when needed. This controls the warm-up time, enabling fuller combustion of fuel. It also helps the oil to reach ideal viscosity quickly, thereby enhancing efficiency and reducing emissions. The Thermostat contributes directly to the crisp throttle response associated with the Impreza WRX. In enthusiastic driving conditions, predictable temperature readings enable the engine management system to rely on aggressive timing without inducing detonation. The Thermostat aids in achieving safety as it maintains a steady stream of coolant in a Subaru. Moreover, this significantly reduces the chances of sudden overheating that could warp heads or leave a driver far from help. This durable assembly features corrosion-resistant housing, a strong spring, and a long-life wax charge that resists breakdown. This gives Subaru fans confidence on track days and when commuting in the snow. Unlike its flashier bolt-on rivals, the humble Thermostat gives you benefits you can feel every start, backing up the balanced chassis and symmetrical all-wheel drive that are in every Subaru performance car. The earlier model came as a sedan. Presently, though, it is a wide hatch. The Thermostat is what every Impreza WRX relies on for steady power. Also, cabin heat is sure to keep costs low. The Thermostat does indeed punch above its size. Opting for an authentic Subaru product guarantees compatibility, longevity, and peace of mind for whatever road, snow, or rally trial that put the cherished Impreza WRX through.

Our website stands as the go-to online destination for OEM Subaru Impreza WRX Thermostat. With complete lines of genuine Subaru Impreza WRX 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.