the McDonnell & Miller 312200 is the official updated part number that replaces the discontinued 311100

Its polished brass construction offers superior corrosion resistance

including the widely serviced 3508 and 6508 series

This specific harness is primarily designed for ignition control systems in gas-fired furnaces and packaged units where precise timing and spark sequence connectivity are required

Installation Efficiency: Includes necessary mounting hardware to facilitate rapid field replacement for service calls

Robertshaw 41-602 Mini Ignitor the McDonnell & Miller 312200The Robertshaw 41 602 Norton Mini Ignitor is a high performance 120V hot surface ignitor engineered for precise ignition in modern residential and light commercial gas furnaces. Designed with a high density recrystallized silicon carbide element, this Norton 41 602 igniter ensures rapid heat up and long term durability under harsh thermal cycling. It functions as a direct OEM furnace ignitor replacement for numerous brands, featuring 5 1 4" lead wires