Lennox 99M77 Inducer Gasket 321042-401 the York S1-029-24481-000 secures the

the York S1-029-24481-000 secures the operational integrity of the primary heat exchanger and inducer assembly without compromising system airflow or burner manifold pressure

whereas the K6-1 is the oversized variant designed for 1/2" to 3/4" shafts

Common Questions Is this adapter compatible with standard 1/4" NPT fittings

Pre-Purge Cycle: 30-second pre-purge ensures the combustion chamber is cleared of residual gases before the spark ignition begins

Lennox 99M77 Inducer Gasket 321042-401 the York S1-029-24481-000 secures theThe Lennox 99M77 Inducer Gasket is a critical OEM replacement part designed to establish an airtight seal between the draft inducer motor and the furnace collector box. Engineered for high efficiency gas furnaces, this combustion air gasket prevents hazardous flue gases and moisture from bypassing the exhaust path, ensuring the pressure switch detects proper static pressure for system ignition. Fabricated from high grade foam or temperature resistant