Subaru Outback Thermostats – OEM-Quality Engine Cooling

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Subaru Outback Thermostats – High-Quality Performance & OEM Parts

Maintain optimal engine temperature and cooling efficiency with OEM Subaru Outback thermostats. Whether you need a factory replacement or a performance upgrade, these thermostats provide precise temperature regulation, preventing engine overheating or inefficient cooling that can lead to engine wear.

Built from high-quality stainless steel and brass, these thermostats are engineered for corrosion resistance, longevity, and maximum reliability in all driving conditions.

21210AA260 - : Thermostat for Subaru Image

Thermostat

Subaru 21210AA260
2.5L. Legacy, Outback. Thermostat - Subaru (21210AA260) The Thermostat - Subaru (21210AA260) is a genuine OEM engine cooling...
$27.45
MSRP $39.43
Save $11.98
30.4% Off
21210AA291 - : Thermostat for Subaru Image

Thermostat

Subaru 21210AA291
Forester. Legacy, Outback. Crosstrek. Transmission Cooling. Incl.Gasket. 2.5L. Engine Coolant Thermostat - Subaru (21210AA291)...
$27.45
MSRP $39.43
Save $11.98
30.4% Off
21210AA160 - : Thermostat for Subaru Image

Thermostat

Subaru 21210AA160
Legacy. With turbo.  Thermostat - Subaru (21210AA160) The Thermostat - Subaru (21210AA160) is a genuine OEM engine...
$23.32
MSRP $33.50
Save $10.18
30.4% Off
21210AA120 - : Thermostat for Subaru Image

Thermostat

Subaru 21210AA120
Legacy. Without turbo. Outback.
$18.56
MSRP $26.67
Save $8.11
30.4% Off
21210AA030 - : Thermostat Unit for Subaru Image

Thermostat Unit

Subaru 21210AA030
3.6L. Legacy, Outback. Forester. 2.5L, 2005. 2.0L, with gasket. Thermostat Unit - Subaru (21210AA030) The Thermostat Unit -...
$19.84
MSRP $28.50
Save $8.66
30.4% Off
21210AA080 - : Thermostat Unit for Subaru Image

Thermostat Unit

Subaru 21210AA080
3.6L. Legacy/Outback. 2.5l. Tribeca. 2008-14. 2.5L without turbo, 2009-10. Legacy/Outback. 3.0l. 2006-07. Thermostat Unit - Subaru...
$18.56
MSRP $26.67
Save $8.11
30.4% Off
21236AA070 - : Thermostat Gasket for Subaru Image

Thermostat Gasket

Subaru 21236AA070
Engine Cooling. Front. Ascent. WRX. Forester. With turbo. 2.0L hybrid. Impreza. With hybrid, lower. Crosstrek.
$3.06
MSRP $4.40
Save $1.34
30.5% Off
11060AA390 - : Thermostat Cover for Subaru Image

Thermostat Cover

Subaru 11060AA390
2.5L, thermostat. 2.5L, upper. Crosstrek. 2.5L, 2024-25. Impreza.
$14.56
MSRP $20.92
Save $6.36
30.4% Off
21200AA230 - : Thermostat Unit for Subaru Image

Thermostat Unit

Subaru 21200AA230
2.5L with turbo.
$17.40
MSRP $25.00
Save $7.60
30.4% Off
21200AA200 - : Thermostat Unit for Subaru Image

Thermostat Unit

Subaru 21200AA200
2.5L without turbo, 2010-12.
$17.40
MSRP $25.00
Save $7.60
30.4% Off
11060AA190 - : Thermostat Cover for Subaru Image

Thermostat Cover

Subaru 11060AA190
3.6L. Legacy/Outback. 2008-14. Tribeca.
$17.26
MSRP $24.80
Save $7.54
30.4% Off
11060AA260 - : Thermostat Housing for Subaru Image

Thermostat Housing

Subaru 11060AA260
Forester. Lower. 2.5L without turbo, 2011-13. Impreza. 2.5L without turbo, 2013-14. With hybrid. BRZ. Legacy. Outback. Crosstrek.
$19.70
MSRP $28.30
Save $8.60
30.4% Off
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Why Choose OEM Subaru Outback Thermostats?

OEM Fitment – Designed for factory specifications to ensure precise temperature control.
Prevents Overheating & Cold Running – Maintains consistent engine temperature for peak performance.
Durable Construction – Made from stainless steel and corrosion-resistant materials for longevity.
Efficient Cooling System Operation – Ensures proper coolant flow and engine protection.
Easy Installation – Direct bolt-on replacement with no modifications required.

Compatible Subaru Models

These OEM thermostats are engineered for various Subaru Outback models, ensuring perfect fitment and reliable cooling performance:

  • Subaru Outback (2000–2024)

Before purchasing, check your vehicle’s engine specifications to select the correct thermostat rating and fitment.

How to Install a Subaru Outback Thermostat

A properly functioning thermostat is crucial for engine cooling and efficiency. Follow this step-by-step guide for proper installation.

Tools Required:

✔ Jack and jack stands
✔ Socket wrench set
✔ Coolant drain pan
✔ Gasket scraper or sealant
✔ Torque wrench
✔ Fresh coolant

Step-by-Step Installation Guide:

  1. Drain the Coolant – Place a drain pan under the radiator and drain coolant to prevent spills.
  2. Locate the Thermostat Housing – Typically near the engine block, connected to the upper radiator hose.
  3. Remove the Old Thermostat – Use a socket wrench to loosen the housing bolts and remove the old thermostat.
  4. Clean the Mounting Surface – Remove old gasket material or debris to ensure a proper seal.
  5. Install the New Thermostat – Insert the new thermostat in the correct orientation (spring facing the engine), then secure the housing.
  6. Refill Coolant & Bleed Air – Refill the cooling system with fresh coolant, run the engine, and check for leaks.

Pro Tip: If you’re using a low-temperature thermostat, it can help maintain cooler operating temperatures in performance applications.

Signs You Need to Replace Your Subaru Outback Thermostat

🚙 Engine overheating or running too cold.
🚙 Temperature gauge fluctuates unexpectedly.
🚙 Coolant leaks near the thermostat housing.
🚙 Check engine light due to cooling system issues.
🚙 Reduced fuel efficiency caused by incorrect temperature regulation.

If you experience these symptoms, replacing the thermostat prevents costly engine damage and ensures smooth operation.

Types of Subaru Outback Thermostats

🔹 OEM Replacement Thermostats – Best for factory cooling performance, ensuring stable engine temperature regulation.
🔹 Low-Temperature Thermostats – Ideal for performance applications, keeping engine temperatures lower for better power output.
🔹 High-Flow Thermostats – Improves coolant circulation, ensuring efficient heat dissipation under extreme conditions.

Choosing the right thermostat ensures efficient engine cooling and longevity.

Popular Related Parts for Subaru Outback

🔹 Subaru Outback Radiators – Maintain maximum cooling efficiency with OEM and performance radiators.
🔹 Subaru Outback Water Pumps – Ensure proper coolant circulation for reliable engine cooling.
🔹 Subaru Outback Cooling Fans – Improve airflow and enhance cooling system performance.

Get Your Subaru Outback Thermostat Today!

Ensure optimal engine cooling performance and prevent overheating with a high-quality OEM Subaru Outback thermostat. Browse the selection and find the right fit for your Subaru Outback today!

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FAQs About Subaru Outback Thermostats

❓ How often should I replace my Subaru Outback thermostat?
Most thermostats last 60,000–100,000 miles, but regular inspections help prevent overheating issues.

❓ What temperature thermostat is best for performance applications?
For high-performance setups, a 160°F–180°F thermostat helps keep engine temperatures lower.

❓ Can I replace my Subaru Outback thermostat myself?
Yes! With basic tools, most DIY mechanics can replace a thermostat in under an hour. Just ensure you bleed air from the cooling system after installation.

❓ Do I need to flush my coolant when replacing a thermostat?
Yes, it's recommended to drain and replace coolant to maintain optimal cooling system performance.

❓ What happens if I drive with a faulty thermostat?
A bad thermostat can cause engine overheating, poor fuel economy, and long-term engine damage.