That's an inline thermistor (resistance varies with temperature) which limits the 'inrush' current when you first turn the pin on.
Buy: https://www.newark.com/amphenol-advanced-sensors/cl-30/ntc-inrush-current-limiter-2-5/dp/81F3387
Data sheet: https://www.farnell.com/datasheets/1855932.pdf
There might be another issue causing the part to fail, or it could have just been due to old age. Wouldn't hurt to make sure the fuses are the correct size, especially the one on the supply coming into the pin. If a fuse is the wrong size (i.e. wouldn't blow) and there's a problem, then the thermistor would take the brunt of it instead.
Naples, FL
