The Lennox 81W46 (LB-101510C) Gasket – Combustion Air is a genuine OEM replacement part designed to provide a proper seal within the combustion air system of compatible Lennox gas furnaces. This gasket plays a critical role in maintaining correct airflow and combustion efficiency by preventing air leakage between connected components. Replacing a worn or damaged combustion air gasket helps ensure safe furnace operation, stable combustion, and consistent heating performance. Manufactured to Lennox factory specifications, this gasket is engineered for precise fit and long-lasting durability in high-temperature furnace environments.

This OEM Lennox combustion air gasket is recommended for professional HVAC service and repair applications where maintaining system integrity and safety is essential. Using an original Lennox part helps protect equipment performance and reduces the risk of improper sealing associated with non-OEM alternatives.

 

Specifications:

Brand: Lennox
Manufacturer Part Number: 81W46
Alternate Part Number: LB-101510C
Product Type: Combustion Air Gasket
Application: Gas furnace combustion air sealing
OEM Status: Genuine Lennox factory part
Material: High-temperature gasket material
Condition: New

 

Product Overview:

Designed specifically for Lennox gas furnace applications, the 81W46 combustion air gasket ensures a tight, reliable seal in the combustion air path. Proper gasket sealing is essential for maintaining correct airflow, preventing unwanted air infiltration, and supporting safe combustion. This part is commonly replaced during furnace maintenance or when servicing combustion-related components.