This is a direct replacement for the MG TC and TD thermostat housing. It is all Stainless Steel, includes a removable 180°F/82°C standard thermostat, stainless steel circlip, and cheese head screws for water elbow. Also included are the two gaskets. This housing is cast in Stainless Steel and accurately machined to accept a standard type automotive thermostat, easily replaceable. Stainless Steel will not corrode like aluminum or interact with the steel in the thermostat.