Where is the thermostat on a 1998 tacoma 2.7?

On a 1998 Toyota Tacoma with a 2.7-liter engine, the thermostat is located at the engine's front, near the water pump. To access it, you'll need to remove the upper radiator hose, which connects to the thermostat housing. Once the housing is unbolted, you can replace the thermostat. Make sure to drain some coolant before starting the replacement to avoid spills.