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Bard part number 9022-073 is an OEM air tube combination (AF67YBFS) used on Bard oil-fired furnace applications to position and support the burner tube assembly so the burner setup maintains proper alignment and stable combustion. If your furnace is experiencing ignition issues, flame instability, or you are replacing multiple burner-end components during service, installing the correct Bard factory part helps restore the original fit and burner geometry the unit was built around. Match this replacement to your exact Bard model and existing burner configuration before ordering, since air tube length and head style are application-specific and must be correct for safe, reliable operation.