AISIN THT-011 Engine Coolant Thermostat - Compatible with Select Lexus GS300, IS300, SC300 Scion xA, xB Toyota 4Runner, Echo, Prius, Supra, Tacoma, Yaris

Alison is a good product and functions as intended.

Perfect fit for the 1NZFE Toyota engine. Works perfectly as expected with the Aisin brand. No gasket included. The Aisin gasket is available on Amazon too separately for about 9 bucks. Hooked up my obd 2 scanner and was running about 185 degrees F engine coolant temperature on the highway with the heat on and outside temps in the 30's.

Very easy to install! It does not come with the rubber ring which I would have liked but for the prices it’s really good! Installed this in a 07 Toyota Yaris and customer stated that his check engine light disappeared and the car stopped overheating

Worked perfectly, no complains. Install was easy but it will vary by car. Have a computer hooked to OBDII and the radiator fans come on at the exact same temp as the stock one (so perfect)

Great OEM quality ftom AISIN, gasket is not included but if you buy the AISIN Water Pump it comes with the thermostat gasket and the water pump neck gaskets that always needs replacing. 5 stars

OEM quality but no gasket!

Works as it is suppose to.

Been in for about a month and it’s working great. Just make sure to buy the gasket for it because it doesn’t come with one.