Utica-Dunkirk 550003151 Flame Sensor Replacement Kit 320788-703 it features heavy-duty nichrome coils

it features heavy-duty nichrome coils and high-temp ceramic insulators to prevent sagging and premature burnout during long run cycles

The module features internal jumpers that let you select between current (0-20 mA) and voltage (0-15 VDC) inputs

threaded fittings

This replacement electrode is specifically configured to integrate with Fenwal ignition modules

Utilizing an aluminum mesh construction

Utica-Dunkirk 550003151 Flame Sensor Replacement Kit 320788-703 it features heavy-duty nichrome coilsThe Utica Dunkirk 550003151 Flame Sensor Replacement Kit is a critical OEM boiler part designed for precise flame rectification in high efficiency heating systems. As a veteran tech knows, a fouled or oxidized sensor is the leading cause of intermittent furnace flame sensor failure and nuisance ignition lockouts. This genuine Utica Dunkirk replacement ensures the control board receives a steady microamp signal, maintaining burner continuity and system