OEM Compatibility: Designed for seamless integration with Lennox AF90 series furnaces

Utilizing authentic valve rebuild components prevents the premature failure of the solenoid operator and maintains the integrity of the pressure-rated housing

The MOT5421 is the manufacturer-recognized replacement for MOT05543

this valve ensures efficient distribution in large residential or light commercial systems

Lochinvar & A.O. Smith 100277715 Gasket Kit 319825-402 OEM Compatibility: Designed for seamlessUpgrade your system's sealing integrity with the Lochinvar & A. O. Smith 100277715 Gasket Kit, a critical service set designed for commercial boilers and water heaters. This OEM Gasket Replacement Kit is the verified direct replacement for the legacy 100188941, precisely engineered for high efficiency burner assemblies and heat exchanger interfaces. As a veteran grade Lochinvar boiler service part, it provides a comprehensive solution for maintaining