The Thermostat may be removed to help reduce engine temperature but a thermostat blanking sleeve should always be fitted in its place to maintain correct coolant circulation through the entire cylinder head otherwise overheating may occur around #3 and 4 combustion chambers and cause severe problems. When using a blanking sleeve it is also necessary to blank off the by-pass hose (not found on later pumps/heads) between the head and water pump. Part # 11G176
Lower radiator hose for Mini and Moke without heater take off. 12A1551EVA or GRH802
Gasket between the cylinder head and heater control valve, blank plate or outlet. Part # 88G221
53K402 heater valve stud (on the head)
Cork Thermostat housing gasket. A series, MGA, MGB
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