Teledyne Laars 10449519R Hi Tension Lead w/Spark Plug end (orange/red wire from ignition control to pilot lead), 37", 715-850Used 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.