AISIN THT-019 Engine Coolant Thermostat – Compatible with Select Lexus ES, HS, LS, RX, SC Scion tC, xB, xD Toyota 4Runner, Avalon, Camry, Corolla, Highlander, RAV4, Sienna, Tacoma, Tundra + More

Customers find the thermostat to be a high-quality OEM replacement that fits perfectly and works as designed, with easy installation. The temperature control receives mixed feedback - while some say it keeps temperatures at optimal operating levels, others report overheating issues. Additionally, the product comes without a gasket.