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OEM Integrity: Original equipment manufacturer part ensures compliance with original safety listings and operating specifications
A standard 1-1/2 inch water heater element wrench is required to seat the 1-inch NPSM threads and ensure a leak-proof seal with the gasket
This genuine OEM replacement part is engineered for high-reliability motor start applications
What is the difference between the T4398B1029 and the T4398B1029/U model
High Dielectric Strength: Factory-tested to withstand up to 600 volts on a dry line with no flashover
Lennox 63W57 Pressure Switch Els PW 17895 OEM Integrity: Original equipment manufacturerThe Lennox 63W57 Pressure Switch is a critical genuine OEM component engineered for precise furnace diagnostic monitoring. This SPST furnace pressure switch is factory calibrated with a 0. 55 . 95" WC pressure rating, ensuring the inducer motor provides sufficient draft for safe combustion. As a direct replacement for Lennox 56M22, the 63W57 eliminates compatibility guesswork during emergency service calls. It functions as a safety interlock,