2017 Subaru Outback Thermostats – Engine Temperature Regulation You Can Trust

2017 Outback Thermostats – Reliable Cooling for Every Drive

Your 2017 Subaru Outback depends on a functioning thermostat to keep the engine within its optimal temperature range. Whether you’re climbing mountain roads or idling in traffic, the thermostat regulates coolant flow to prevent overheating and ensure fuel efficiency.

If it fails—open or closed—you may experience engine overheating, weak heater output, or poor fuel economy. These OEM-quality thermostats are built to meet exact factory specifications, so your Outback runs reliably in all conditions.

Why Choose OEM 2017 Outback Thermostats?

✔ OEM Fitment – Precision-engineered to match the cooling system with no modifications 

✔ Accurate Temperature Regulation – Opens at the correct temperature (~188°F–195°F) 

✔ Durable Construction – Withstands high pressure and repeated heat cycles 

✔ Protects Engine Health – Prevents overheating and improves combustion efficiency 

✔ Easy Installation – Direct-fit part that installs easily with basic tools

Compatible 2017 Subaru Outback Trims

Thermostats available for: 

🔹 2.5i Base 

🔹 2.5i Premium 

🔹 2.5i Limited 

🔹 3.6R Limited

✅ The 2.5L and 3.6L engines use different thermostat assemblies. Always confirm fitment with your VIN or engine size before purchasing.

How to Replace 2017 Outback Thermostats

Tools Required: 

✔ Socket wrench set 

✔ Coolant (Subaru Super Coolant or equivalent) 

✔ Drain pan 

✔ New thermostat gasket or O-ring 

✔ Torque wrench

Step-by-Step Guide: 

1️⃣ Drain Coolant – Open the radiator drain plug and capture coolant in a pan. 

2️⃣ Remove Thermostat Housing – Detach hoses and remove bolts securing the housing. 

3️⃣ Remove the Old Thermostat – Clean mating surfaces thoroughly. 

4️⃣ Install New Thermostat – Use a new gasket/O-ring and align properly. 

5️⃣ Reassemble & Refill Coolant – Reinstall components and refill system with coolant. 

6️⃣ Bleed Air from System – Run the engine with heat on to purge air bubbles.

🔧 Pro Tip: Always use OEM-recommended coolant to prevent corrosion and maximize thermostat lifespan.

Signs You Need to Replace Your 2017 Outback Thermostat

🚙 Temperature gauge fluctuates or runs hot 

🚙 Heater blows cold air even when the engine is warm 

🚙 Coolant leaks near thermostat housing 

🚙 Check engine light for coolant temperature sensor codes 

🚙 Poor fuel economy or sluggish performance

Types of 2017 Outback Thermostats

🔹 Standard OEM Thermostat – Opens between 188°F–195°F; best for everyday use 

🔹 Low-Temperature Thermostat – Opens earlier (~160°F–180°F); suited for towing or modified engines 

🔹 High-Flow Thermostat – Allows more coolant to circulate; ideal for high-load or performance applications

⚠️ For most drivers, standard OEM thermostats offer the best balance of performance and fuel efficiency.

Popular Related Parts for 2017 Outback

🔹 2017 Outback Radiators – Keeps coolant temperature stable during long drives 

🔹 2017 Outback Water Pumps – Ensures consistent coolant circulation 

🔹 2017 Outback Coolant Temperature Sensors – Monitors engine temp and feeds ECU data

Get Your 2017 Outback Thermostat Today!

Don’t let a failing thermostat leave you stranded. Choose an OEM replacement thermostat built to match your Outback’s cooling system—keeping your engine protected and your drives worry-free.

🛒 Upgrade Your Ride 🚙 – Shop Now!

FAQs About 2017 Outback Thermostats

❓ When should I replace my thermostat? Around 100,000 miles, or sooner if you experience symptoms like overheating or weak heat output.

❓ Can I install a thermostat myself? Yes—with basic tools and mechanical knowledge, it’s a moderate DIY task.

❓ What coolant should I use? Use Subaru Super Coolant or a phosphate-free, silicate-free coolant that meets OEM specs.

❓ What happens if the thermostat sticks closed? The engine may overheat rapidly, risking head gasket damage or worse.

❓ What if it sticks open? The engine won’t reach proper operating temperature, leading to poor fuel economy and weak cabin heat.