

🔥 Stay cool, drive smarter with AISIN precision ⚙️
The AISIN THF-003 Engine Coolant Thermostat with Gasket is an OEM-quality replacement part engineered for select Saab 9-2X and Subaru models. Built with superior materials and exact OE specifications, it ensures reliable temperature regulation to prevent engine overheating. Easy to install and complete with gasket and O-ring, this thermostat delivers long-lasting performance and peace of mind for discerning drivers.




| ASIN | B01LWMM7VY |
| Backlight | No |
| Best Sellers Rank | #25,987 in Automotive ( See Top 100 in Automotive ) #24 in Automotive Replacement Engine Thermostats |
| Brand | AISIN |
| Color | Black |
| Connectivity Protocol | Wi-Fi |
| Connectivity Technology | Wi-Fi |
| Control Method | Touch |
| Control Type | Button Control |
| Controller Type | Push Button |
| Customer Reviews | 4.5 4.5 out of 5 stars (179) |
| Date First Available | September 22, 2016 |
| Display Type | analog |
| Exterior | Machined |
| Global Trade Identification Number | 04580281458586 |
| Included Components | AISIN THF-003-Engine Coolant Thermostat |
| Item Weight | 5 ounces |
| Item model number | THF-003 |
| Manufacturer | AISIN |
| Manufacturer Part Number | THF-003 |
| Material | Stainless Steel |
| Model Name | AISIN |
| Mounting Type | Surface Mount |
| OEM Part Number | 21210-AA080 |
| Power Source | Battery Powered |
| Product Dimensions | 2.95 x 2.95 x 2.76 inches |
| Shape | Rectangular |
| Specific Uses For Product | engine cooling system temperature regulation in select SAAB and SUBARU vehicles |
| Style | Modern |
| Temperature Control Type | manual |
T**Y
Perfect fit 02 Legacy 2.5L
10-15 minute install on a 2002 Subaru legacy with a 2.5L, took photo to compare that the product is slightly different but works great fixed overheating issue of the old one staying stuck closed and heat is great
J**S
OEM quality thermostat
Aisin is an OEM parts supplier for Subaru. If you’re replacing your radiator, timing belt or head gaskets, might as well swap in a new thermostat.
N**K
It fits subaru 2005-2009
It fits my 2009 subaru outback and it doesn't overheat anymore
K**P
Works great in a 2005 Outback 2.5i
Fixed my thermostat on a 2005 Outback 2.5i. I was a bit worried because it said 80 deg C on it and I thought the original one was rated at 70 Deg C, but I was wrong.. The original one was 78 deg C. 4 degrees isn't that much. It was a straight swap without issues. After refilling and burping the cooling system, my cooling system is happy again.
A**R
This was the correct part for my car
Excellent part
R**H
Cheap insurance when replacing timing belt
It's my understanding that this company supplies Subaru with timing and cooling system components. It looks, performs, and installs like the Subaru thermostat it replaced.
A**R
Good
Good
J**G
As good as oem
Operates and opens as designed at correct temp for my 05 forester. Budget friendly option with oem quality
M**T
got this for a 2011 outback 3.6 and it matches the OEM one
Q**R
Mint bud!
P**A
Thermostat was damaged and overheated my car. I trusted AISIN but now i got disappointed.
R**L
Kept sticking closed and overheating my car. Removed it and no problems since.
N**4
Reduced wrong part didn’t fit my car waist my time , i had to install old one. Amazon f…d up
Trustpilot
2 weeks ago
1 month ago