Measure the counterbore in the housing where the thermostat fits and buy one the right diameter. A piece of gasket paper and an X-Acto knife takes care of the gasket. Part numbers are for amateurs who don't know how to improvise.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!