CERAMIC HEATER-TYPE GLOW PLUG

A configuration and manufacturing steps of a ceramic heater-type glow plug are simplified when compared to a related art, and a fracture therein is prevented. A ceramic heater-type glow plug (1) that includes a ceramic heater (11), and a metallic outer cylinder (12), one end side of which holds the ceramic heater (11) and the other end side of which is inserted in and fixed to an inner hole (143) of a housing (14) has one electrode (115) of the ceramic heater (11) on an outer circumferential surface of the ceramic heater (11) and the other electrode (114) at a rear end of the ceramic heater (11), a first large-diameter lead section that is connected to the other electrode (114) and has electrical conductivity, a second large-diameter lead section that is connected to a rear end of the first large-diameter lead section and is made of an electrical conductive material that differs from the first large-diameter lead section, an elastic member with electrical conductivity that is connected to a rear end of the second large-diameter lead section by welding, and an external connection terminal that is connected to a rear end of the elastic member.