Replacement Quadra-Fire Pilot Assembly (NG): 842-4940. The pilot assembly connects the burner to the gas valve. It is responsible for providing the pilot flame that will light the main burner. Includes the thermocouple (200-2950), thermopile (842-0250), electrode w/wire, pilot bracket, pilot hood, NG and LP injector orifice (200-2630 and 842-4440). This pilot assembly comes set for NG. To set it up for LP, change out the current orifice for the .35 LP orifice (part # 200-2630) which is included in the package.