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Just trace your top radiator hose to where it's connected to the engine. That piece is called the thermostat housing. Drain out a couple of quarts of coolant from the radiator, remove the top hose, remove the two nuts from the housing and this will reveal the thermostat. Be sure to get a new gasket for the new one too. I don't recommend reusing gaskets. Simple job. Maybe 30 minutes from start to finish. Actually, I just replaced mine today, and it was nowhere near where this location was. I wound up following where the BOTTOM radiator hose went to the engine, and there was the thermostat housing. Took a bit longer, but still was pretty easy. I simply removed the coolant recovery tank and set it aside, took off the two 10 mm nuts that held the thermostat housing on (be careful... the temperature sensor is in the housing... there is a wire that is plugged into this sensor. I left it on and carefully pulled off the housing). You will most likely have to pry out the thermostat... it has a rubber gasket around the outside of the thermostat... was a little bit stubborn removing it. That's pretty much it. I removed the front "thermostat housing" and there was nothing there.
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