Lennox 74W71 Manifold 319825-402 The 5/8" x 1 7/8"

The 5/8" x 1 7/8" keyed shaft and reversible rotation capability provide the field flexibility needed for various airflow configurations

this 2-pole fan relay utilizes a 110/120V AC coil to effectively manage high-voltage circuits in air handlers and furnaces

Common Questions Is the Teflon seal included with this valve kit

ensure the mating surfaces are clear of old sealant to maintain the pressure differential required by the draft inducer motor

Lennox 74W71 Manifold 319825-402 The 5/8" x 1 7/8"The Lennox 74W71 Gas Manifold (OEM part 103087 02) is a precision engineered component designed for high efficiency fuel distribution in Lennox gas furnaces and select commercial rooftop units. As a direct fit HVAC replacement part, it ensures balanced gas flow to the burner assembly, mitigating pressure fluctuations that cause combustion instability and resonance noise. Constructed from aluminized steel, this manifold resists the high heat corrosion