This overheat sensor w/cable for the Hydronic 4 comes complete with harness connections for the water pump, fuel pump and glow pin.
This is a complete harness incorporating the overheat sensors, FMP connection, glow plug connection and water pump connection
This is coolant pump is used on the early SC versions models 25.1920.01 and 25.2098.01. These pumps do not fit the later model 25.2219.01 model heaters
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