Trane THT2440 Limit Switch and CH series boilers

and CH series boilers

the 0881405 ordering code is the direct replacement and identical to the Watts GA-F kit designation

The Lennox 43K53 Flame Sensor is a critical OEM safety component engineered for precise flame rectification in gas-fired heating systems

This specific boiler burner gasket is a direct replacement for legacy part numbers GKT2429 and GKT2429K (and cross-references to 100146534)

ensuring efficient coil engagement and reduced heat generation

Trane THT2440 Limit Switch and CH series boilersMaintain peak operational safety in residential heating systems with the Trane THT2440 Limit Switch. This genuine Trane OEM replacement part is a critical safety component designed to monitor heat exchanger temperatures and prevent hazardous overheating conditions. As a high reliability 150 180F auto reset limit switch, it is engineered to automatically open the electrical circuit when internal plenum temperatures reach 180F, effectively shutting down