Thermostat 71˚C STM3521 for Vetus Diesel M2.05 engines.
The thermostat for the engines is retained in a rubber hose, so the gasket is only required if the thermostat housing is disturbed - in which case we recommend replacing the gasket.
Part references:
STM3521 - thermostat
STM3522 - gasket (STM7855 may be used as an alternative)
