OEM Precision: Genuine ClimateMaster S17S0031N01 ensures the 10K Ohm resistance curve matches the control board logic for accurate freeze protection

Rugged Construction: Equipped with a stainless steel bulb and capillary to resist corrosion and mechanical wear in high-heat zones

The MP54 utilizes a fixed differential pressure and an integrated thermal time relay with a 45-second delay

Reduced Noise: Minimizes audible harmonics and "chattering" common with non-OEM or misaligned aftermarket wheels

This part is standard in many Copper-Fin and early-model commercial water heaters

Lochinvar & A.O. Smith 100277758 Impeller 320788-704 OEM Precision: Genuine ClimateMaster S17S0031N01The Lochinvar & A. O. Smith 100277758 Impeller is a precision engineered 4. 75 inch plastic component designed for high efficiency hydraulic systems. As the 100277758 direct replacement for 100133559, this part ensures seamless compatibility with Lochinvar boiler pump systems and A. O. Smith water heaters. For technicians servicing high efficiency fire tube boilers or commercial water heaters, maintaining proper fluid velocity is critical for heat