AISIN GENUINE THT-017 Engine Coolant Thermostat with Housing - Compatible with Select Lexus CT200h Toyota Corolla, Prius, Prius AWD-e, Prius Plug-In, Prius Prime, Prius V

Good quality installed this on my gen 3 Toyota Prius and have put almost 30,000 miles on it so far with no problems

Fit and worked perfect with my 2011 Prius, no more over temperature. One mention i couple this with Nipondenso thermostat.

Fits perfectly

Replacing this thermostat housing (which has a thermostat inside), along with a new AISIN water pump, solved my overheating problem in my Prius V. This is an AISIN brand which--to let folks in on a possible secret--is the same item sold by a Toyota dealer parts department. They just grind off any Toyota branding information. Hence, this is a very reliable product. It's great to not have to worry about overheating my Prius V when I drive it. Had I not monitored the temperature before I installed this thermostat, I could have toasted my engine. I am very pleased with this product.

Good replacement thermostat for 2010 Prius. Others have struggled getting the thermostat off. I was lucky, the bolts were not rusty or corroded and turned easily enough. Takes a little bit of patience but all in all was an easy additional fix when I had to replace the water pump.

Direct fit. Car had overheating problems and this fixed it. Aisin brand as far as I could tell instead of a knock off

Part worked good! 4 stars due to shipping. Sold by Amazon but it shipped in its original packaging so it was half open and sliding around everywhere.

If you’re doing the water pump, this thermostat is a no-brainer. It’s right there during the repair, so skipping it makes no sense. This is an Aisin part and the quality is exactly what you’d expect—OEM fit, correct housing, and everything seals up properly. Installed easily with no leaks and the engine warms up and regulates temperature exactly as it should. Do it once, do it right. Add this while you’re in there and save yourself from having to go back in later. Highly recommended.

Don't go with a marginally cheaper non-OEM part for this. Bit of a pain to remove the lower hose clamp, might want to consider buying a remote/flexible hose clamp tool and a set of plastic hose clamps for that part. Good luck!