Thermostat for in top hose
77° Thermostat for mounting in top radiator hose.
Suits all D models with thermostat in hose and all H vans after September 1963.
Before fitting the new thermostat, it is recommended that you drill a small hole (2 or 3mm diameter) as shown in the photo. This allows any air to bleed out, preventing a vapour lock which would prevent the thermostat opening due to lack of coolant under it.
Replaces OE numbers: