Teledyne Laars 10449518R Hi Tension Lead w/Spark Plug end (orange/red wire from ignition control to pilot lead), 31", 500-600Used on I/E and LB boilers that still have the Johnson G67 ignition control. These wires incorporate the spark plug type terminal end. If your boiler has the United Technologies Ignition Control please refer to your instruction manual for those part numbers which are the same part number without the "R" at the end.