The Lennox 41K56 is an original OEM hot surface ignitor engineered for reliable and consistent ignition in Lennox residential and light commercial gas furnaces. Manufactured to Lennox’s factory specifications, this genuine replacement ignitor delivers precise performance, fast ignition response, and long-term durability.

Built with a rugged silicon nitride element, the 41K56 offers improved heat resistance and extended service life compared to older silicon carbide ignitors. The assembly features a steatite ceramic insulator with an integrated mounting tab and white non-stick coated leads for secure installation and stable electrical connection.

Key Features

• Original Lennox OEM replacement for 80V gas furnace systems

• Silicon nitride element provides longer lifespan and faster ignition

• 80V AC / 92W power rating ensures consistent ignition performance

• 54mm element length provides precise fit and compatibility

• White non-stick coated leads resist heat and wear

• Steatite ceramic insulator with mounting tab simplifies installation

• Compatible with both 50 Hz and 60 Hz systems

Technical Specifications

• Part Number: 41K56

• Replaces: LB-109261A, 41K5601

• Voltage: 80V AC

• Power Rating: 92 Watts

• Ignition Type: Hot Surface Ignition

• Element Material: Silicon Nitride

• Element Length: 54mm

• Frequency: 50/60 Hz

• Insulator Type: Steatite ceramic with mounting tab

• Lead Type: White non-stick coated

• Brand: Lennox (Original OEM)

Applications

Designed for use in select Lennox, Armstrong Air, and Allied Air furnaces utilizing 80V hot surface ignition systems. The Lennox 41K56 Original OEM Ignitor is ideal for technicians and homeowners seeking a direct, factory-grade replacement that restores reliable ignition performance and system efficiency.