Description
Thermostat O Ring Kit for Subaru Outback – Durable, Easy-to-Install Cooling System Replacement. Ensure your Subaru’s engine runs at the perfect temperature with this high-quality Thermostat O Ring Kit, designed for precise coolant flow and long-lasting reliability. This kit is a perfect replacement for your old thermostat, helping you avoid overheating, leaks, or costly repairs.
Key Features:
- Durable Materials: Made from premium-grade metal and high-quality gaskets, ensuring strong stability and long-lasting performance. Resistant to cracks, wear, and leaks.
- Easy Installation: Plug-and-play design that meets original specifications, ensuring a hassle-free installation for DIY enthusiasts or professionals.
- Reliable Performance: Ensures a leak-free and stable cooling system, helping your engine maintain optimal operating temperatures.
Compatibility:
This kit is specifically designed to fit a wide range for Subaru models:
- Subaru Outback: 2000 – 2005, 2015 – 2018 (3.6L, H6 engine)
Compatible with OEM part numbers: 21200AA072, 21200AA071, 21200AA010, 21200AA070, 417537200, 317530800, 417537100 (for Subaru)
NOTE:
- Make sure the thermostat is compatible with your car model. Check the part number and confirm compatibility before purchasing
- Please note that the thermostat may be different from the original part, the sealing gasket may be thinner. If necessary, replace it with a more suitable one
- Check the correct installation to avoid leaks
Specifications
- Material: High-quality metal
- Opening Temperature: 78 °C
Step-by-Step Installation Guide:
- Cool the Engine: Wait until the engine is completely cool to avoid burns.
- Drain Coolant: Place a drain pan under the radiator. Open the drain plug (or disconnect the lower radiator hose) to release enough coolant.
- Access the Thermostat: Locate the thermostat housing (where the lower radiator hose connects to the engine). Loosen the clamp and disconnect the hose.
- Remove Old Parts: Unscrew the thermostat housing, remove the old thermostat and O-ring.
- Install the New O-Ring: Clean the area thoroughly, place the new O-ring onto the thermostat or housing.
- Reassemble: Reinstall the thermostat, secure the housing with bolts, reconnect the hose, and tighten the clamp.
- Refill Coolant: Add coolant to the proper level. Start the engine and let it warm up to release air bubbles.
- Check for Leaks: Inspect for leaks while the engine is running. Recheck coolant levels after the engine cools down.
Why Choose This Kit?
- Save Time & Money: Perform a quick and easy repair at home, avoiding costly mechanic fees.
- Enhanced Durability: Built to withstand extreme temperatures and ensure long-term reliability.
- Wide Compatibility: Designed to fit a wide range for Subaru models with perfect precision.
Package Includes: Thermostat O Ring Kit
Upgrade your Subaru’s cooling system today with this durable and reliable thermostat kit!

















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