Thanks, The part number was correct. I bought the housing today and installed it. The new one is still plastic. The old one had a hairline crack in it. I guess it is good for another 1220K. The part number I sent you is the correct part for the thermostat housing. When you buy it, make sure that it comes with a gasket. I can't remember if it comes packaged in the box or you have to ask for it explicitly.