OEM Lennox Igniter Cable — Y5374

The Lennox Y5374 igniter cable is a genuine OEM component for Lennox wall-mounted condensing gas boilers. This high-tension cable carries the ignition signal from the boiler's control board to the igniter/electrode, delivering the spark or high-voltage charge needed to light the burner reliably at the start of every heating cycle. A sound igniter cable is essential for consistent, on-demand ignition and safe combustion.

Common failure symptoms include ignition lockout or fault codes, the boiler failing to fire, delayed or intermittent ignition, repeated ignition attempts before the burner lights, and no heat or hot water. Heat cycling, moisture, and vibration can crack the cable insulation or corrode the connectors, weakening the spark or breaking the circuit entirely.

Why OEM matters: The Y5374 is built to the exact length, connector style, and high-voltage insulation rating of your Lennox condensing boiler's ignition system. The genuine cable ensures a proper, arc-free connection between the control and igniter so the burner lights cleanly every cycle. Generic cables may not seat correctly or withstand the boiler's high-tension demands, leading to unreliable ignition and lockouts. Choose the authentic Lennox part to restore dependable, safe boiler startup and keep your heating system running through the season.