The Lennox 74W71 Gas Manifold is an OEM replacement component designed to distribute gas evenly to the burner assembly in compatible Lennox gas furnaces. Connected to the furnace gas supply and burner orifices, the manifold directs gas through multiple outlet ports, helping provide consistent fuel flow for proper combustion. It is used in Lennox residential gas furnace systems and sup... https://www.partshnc.com/74w71-lennox-gas-manifold