The Armstrong Furnace R43127-001 Flame Sensor is a critical OEM replacement part designed for precision flame rectification in residential heating systems

repeatable snap-action performance required by HVACR contractors for professional-grade refrigeration and air conditioning maintenance

As a critical HVAC control accessory

Common Questions What was the original reason my transformer failed

This OEM Trane part features a 50 microfarad capacitance and is rated for 440VAC applications

Raypak 006713F Gasket Kit The Armstrong Furnace R43127-001 FlameAs an HVAC technician, you know that a compromised seal on a polymer heat exchanger is a fast track to system failure and costly service callbacks. The Raypak 006713F Gasket Kit is the technician preferred replacement for maintaining the pressure integrity of the header assembly. This OEM 2 pack features 9 1 4 inch ID O rings with a 1 8 inch thickness, specifically engineered to provide a high tolerance seat between the header and the exchanger.