Lennox 27M72 (LB-99226D) Manifold / Orifice Kit – OEM Gas Conversion & Distribution Kit

 

Lennox information

The Lennox 27M72 Manifold / Orifice Kit, also referenced as LB-99226D, is a genuine OEM Lennox replacement component designed for proper gas distribution and fuel metering in compatible Lennox gas furnaces and heating systems. Lennox OEM parts are engineered to meet exact factory specifications, ensuring correct fit, safe operation, and long-term reliability.

 

Product overview

The Lennox 27M72 Manifold / Orifice Kit is used to regulate and distribute gas evenly to the burners by means of correctly sized orifices matched to the system’s fuel type and input requirements. This kit is commonly required during furnace repairs, fuel conversions, or when replacing worn or damaged manifold or orifice components. Using the correct OEM manifold and orifice kit helps maintain proper combustion, efficient heat output, and compliance with manufacturer safety standards.

This kit is intended for use by qualified HVAC professionals and is critical for maintaining proper gas flow, burner performance, and system efficiency.

 

Specification

Manufacturer: Lennox
Part number: 27M72
Alternate / reference number: LB-99226D
Product type: Manifold and orifice kit
Function: Gas distribution and burner fuel metering
Application: Lennox gas furnaces and heating equipment
OEM status: Genuine Lennox factory part
Installation: Professional installation recommended

Country of origin
United States

 

Compatibility note

Model compatibility can vary by furnace series and configuration. Always verify the part number against the unit model and serial number or consult the equipment documentation to ensure proper application before ordering.