Laars Heating Systems A2123411 Cartridge Assembly 321894-708 and 5/16" O

and 5/16" O

Always verify your specific model and serial number against the Heil product specifications to ensure the internal dimensions and porting match

Replacing the damaged part with a genuine OEM York ribbon cable is the only way to ensure system reliability

this kit allows you to transition from the outdated 401 filter to the high-efficiency Aprilaire 413 filter

the gasket loses its ability to reseal effectively

Laars Heating Systems A2123411 Cartridge Assembly 321894-708 and 5/16" OThe Laars Heating Systems A2123411 Cartridge Assembly is a critical OEM replacement part engineered for hydronic boiler and commercial water heater applications. This Taco 180 270RP pattern assembly features a heavy duty cast iron body designed to handle the rigorous demanding flow requirements of high efficiency heating systems. It is effectively utilized in various Laars boiler models and pool heaters, functioning as a primary component to regulate