Subaru Impreza Thermostats – OEM-Quality Engine Cooling

Subaru Impreza Thermostats – High-Quality Performance & OEM Parts

Maintain optimal engine temperature and cooling efficiency with OEM Subaru Impreza 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.

808206210 - : Water Pump Bolt for Subaru Image

Water Pump Bolt

Subaru 808206210
2.5L, thermostat. 2.4L turbo. 2.5L without turbo.
$0.65
MSRP $1.12
Save $0.47
42% Off
808206040 - : Water Pump Bolt for Subaru Image

Water Pump Bolt

Subaru 808206040
3.6L. 2.0L hybrid. With hybrid. 2.5L, 2024-25.
$1.39
MSRP $2.00
Save $0.61
30.5% Off
73540FL651 - : Temp Sensor for Subaru Image

Temp Sensor

Subaru 73540FL651
Impreza. From 01/20/2024. Inner parts. Forester. Left. 2.5l. Crosstrek. 2.0l. Inner components. heater core.
$38.91
MSRP $55.90
Save $16.99
30.4% Off
21235AA010 - : Water Outlet O-Ring for Subaru Image

Water Outlet O-Ring

Subaru 21235AA010
2.5L, lower.
$6.15
MSRP $8.83
Save $2.68
30.4% Off
73540FL640 - : HVAC Evaporator Temperature Switch for Subaru Image

HVAC Evaporator Temperature Switch

Subaru 73540FL640
With hybrid. Japan Built. Inner parts. Impreza. Forester. Right. 2.5l. Crosstrek. 2.0l. Inner components. evaporator.
$39.67
MSRP $57.00
Save $17.33
30.4% Off
10406250 - : Hose & Tube Assembly Bolt for Subaru Image

Hose & Tube Assembly Bolt

Subaru 010406250
Type 2. 2.5L. With hybrid.
$0.57
MSRP $0.98
Save $0.41
41.8% Off

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Why Choose OEM Subaru Impreza 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 Impreza models, ensuring perfect fitment and reliable cooling performance:

  • Subaru Impreza (1993–2024)

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

How to Install a Subaru Impreza 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 Impreza 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 Impreza 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 Impreza

🔹 Subaru Impreza Radiators – Maintain maximum cooling efficiency with OEM and performance radiators. 

🔹 Subaru Impreza Water Pumps – Ensure proper coolant circulation for reliable engine cooling. 

🔹 Subaru Impreza Cooling Fans – Improve airflow and enhance cooling system performance.

Get Your Subaru Impreza Thermostat Today!

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

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FAQs About Subaru Impreza Thermostats

❓ How often should I replace my Subaru Impreza 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 Impreza 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.