The seat is strategically positioned above the drain to ensure sediment and water do not become trapped

The 100412 is the approved replacement for the 054981

Replacing a manual reset limit switch with an auto-reset version is a safety violation

Perfect Fitment: Eliminates the risk of thread leaks or seating issues common with universal parts

and nickel-plated brass stem for extended service life

Lochinvar & A.O. Smith 100109827 Ignitor Pilot 340793-762 The seat is strategically positionedThe Lochinvar & A. O. Smith 100109827 Ignitor Pilot is a critical replacement component engineered for high performance gas fired water heaters and residential boilers. Designed as a professional grade pilot igniter kit, this assembly facilitates precise spark generation to initiate combustion efficiently while maintaining system safety. It serves as a direct replacement for AO Smith 100109827 and Lochinvar 100109827, as well as the legacy part number