the 92L19 temperature limit control offers an exact-fit solution for the AF90MPB and AF90MPE series furnaces

It is technically identical to the Honeywell 4074ELR/U

Utilizing genuine OEM pool heater parts like the 800203B ensures that your header manifold assembly maintains its design-spec compression

While the switch itself may be failing

but the technical specifications and hardware are identical

Johnson Controls T-2100-205 Thermometer 30067439-890 the 92L19 temperature limit controlJohnson Controls T 2100 205 Dial Thermometer, 40 to 240 Degree Temperature Scale, "B" Bulb Element, Flush Panel Mount, 15' Capillary Length, Stainless Steel Case, Vapor Filled Copper Element, "B" Style Elements Require a Minimum Insertion Length of 9 1 2"