The MARS 39220 Limit Switch is a versatile

lead-free version of the 0121605

this service kit provides the necessary components to execute a precision boiler tune-up

Rugged TEAO Enclosure: The Totally Enclosed Air Over design prevents dust

York S1-029-24480-000 Parts Package 318423-701 The MARS 39220 Limit SwitchThe York S1 029 24480 000 Parts Package is a critical OEM maintenance kit engineered for secondary heat exchanger and burner assembly service on 95% AFUE high efficiency furnaces. Built specifically for units with a capacity ranging from 040 to 080 MBH, this hardware bundle is optimized for the York TM9X series and equivalent single stage multi position natural gas systems. As a genuine Johnson Controls (JCI) component, it ensures factory standard