How to Replace a Coolant Temperature Sensors on a Subaru Impreza?

Disconnect the battery's negative cable and partially drain coolant. Remove the air intake duct, filter housing, and engine cover if present. Disconnect the ECT sensor's electrical connector and unscrew the sensor. Wrap the sensor threads with Teflon tape. Remove the alternator and repeat the process with the second ECT sensor. Reinstall everything in reverse order and refill the coolant.

Genuine Subaru Impreza Coolant Temperature Sensors

Coolant Temperature Sensor

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10 Coolant Temperature Sensors found

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Subaru Impreza Sensor Assembly Temperature
Part Number: 22630AA140
$29.62 MSRP: $42.93
You Save: $13.31 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Temperature; Coolant Temp Sensor, Temp Sensor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2006-2012 Subaru Impreza | 2.5 GT, 2.5i, 25i, Base, Limited, Outback, Outback Sport, Premium, Sport, Sport Limited, STI, STI Special Edition, STI Sport, WRX, WRX Sport, WRXSS | 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza Coolant Temperature Sensor
Part Number: 22630AA230
$44.06 MSRP: $63.85
You Save: $19.79 (31%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Temp Sensor; Engine Coolant
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2013-2016 Subaru Impreza | Base, Limited, Premium, Sport, Sport Limited
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Subaru Impreza Sensor Assembly Temp
Part Number: 22630AA161
$30.14 MSRP: $43.68
You Save: $13.54 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Temperature; Coolant Temp Sensor, Temp Sensor
- Replaces: 22630AA160, 22630AA100, 22630AA11A
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1999-2007 Subaru Impreza | 25i, Brighton, L, Outback, Outback Sport, RS, STI, STI Limited, TS, WRX, WRX TR | 2.0L H4 Turbo, 2.2L H4 Series, 2.5L H4, 2.5L H4 SOHC, 2.5L H4 Turbo
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Subaru Impreza Temp Sensor Assembly
Part Number: 22630AA27A
$52.90 MSRP: $76.67
You Save: $23.77 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Temperature
- 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 Temperature Sensor
Part Number: 22630AA041
$23.12 MSRP: $33.50
You Save: $10.38 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Temperature; Coolant Temp Sensor, Temp Sensor
- Replaces: 22630AA040
- 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, RS | 1.8L H4, 2.2L H4, 2.2L H4 (New EVAPO), 2.5L H4 DOHC
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Subaru Impreza Sensor Assembly Temperature
Part Number: 22630AA270
$52.99 MSRP: $76.79
You Save: $23.80 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Ay Temperature
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2024-2025 Subaru Impreza | 4 Cyl 2.0L, 4 Cyl 2.5L
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Subaru Impreza Temperature Sensor
Part Number: 22630AA100
$30.14 MSRP: $43.68
You Save: $13.54 (31%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor Assembly-Temperature
- Replaced by: 22630AA161
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1999-2003 Subaru Impreza | Brighton, L, Outback, RS, TS, WRX | 2.0L H4 Turbo, 2.2L H4 Series, 2.5L H4, 2.5L H4 SOHC
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Subaru Impreza Sensor Assembly Temp
Part Number: 22630AA160
$30.14 MSRP: $43.68
You Save: $13.54 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Temperature
- Replaced by: 22630AA161
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004 Subaru Impreza | Outback, RS, STI, TS, WRX | 2.0L H4 Turbo, 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza Sen Assembly-Temp
Part Number: 22630AA300
$75.69 MSRP: $109.70
You Save: $34.01 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2024-2025 Subaru Impreza | 4 Cyl 2.5L
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Subaru Impreza Temperature Sensor
Part Number: 21203AA030
$32.49 MSRP: $47.08
You Save: $14.59 (31%)
Product Specifications
- Other Name: Gauge Assembly-Thermo; Temp Sending Unit
- 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, RS | 1.8L H4, 2.2L H4, 2.2L H4 (New EVAPO), 2.5L H4 DOHC

Subaru Impreza Coolant Temperature Sensors

Subaru Impreza Coolant Temperature Sensors constantly track coolant heat levels so the engine stays in its sweet spot. Sitting threaded into the cooling passage, these Coolant Temperature Sensors watch the flowing liquid, register its warmth, then feed that information to the control module that governs fuel mix and ignition timing, such Coolant Temperature Sensors data lets the motor run neither too hot nor too cold. Because accurate readings keep performance steady, the sensor plays a vital role in achieving optimal conditions judged crucial for reliability and efficiency. Throughout Subaru history with the Impreza line, the cars have relied on one proven thermistor based unit, so drivers will not face multiple designs, and the fundamental mechanism remains unchanged, relying on electrical resistance that varies with heat. The Coolant Temperature Sensors absence of alternate styles simplifies replacement and diagnosis while underscoring how a straightforward approach can protect the engine. In daily driving, Coolant Temperature Sensors respond quickly to temperature swings at start up, cruising, or hard acceleration, and by relaying real time data they help a Subaru maintain consistent power, economy, and emission control, making them small yet critical guardians for every Impreza.

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

Sensor Assembly Temp
22630AA161
Q:
How to Replace a Coolant Temperature Sensors on a Subaru Impreza?
Posted by Felix L.
A:
Disconnect the battery's negative cable and partially drain coolant. Remove the air intake duct, filter housing, and engine cover if present. Disconnect the ECT sensor's electrical connector and unscrew the sensor. Wrap the sensor threads with Teflon tape. Remove the Alternator and repeat the process with the second ECT sensor. Reinstall everything in reverse order and refill the coolant.
Answered by Subaru Parts Specialist Diego / May 24, 2025

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