The Lennox 79L53 – 65253700 Orifice-Tapered is a genuine OEM Lennox gas orifice designed to precisely control natural gas flow to the burner assembly in compatible Lennox heating equipment. Featuring a tapered design, this orifice helps ensure proper combustion characteristics, stable flame performance, and efficient fuel delivery. Using the correct factory-specified orifice is critical for maintaining system safety, efficiency, and long-term reliability.

This OEM Lennox tapered orifice is manufactured to exact specifications for fit and performance, making it an ideal replacement during furnace service, burner maintenance, or gas flow correction. It is commonly used in Lennox gas furnaces and heating systems that require a #38 natural gas orifice configuration. Installing the proper orifice helps prevent combustion issues, inefficiency, and potential damage caused by incorrect gas metering.

 

Product Overview:

OEM Lennox tapered gas orifice used to regulate natural gas flow to the burner assembly. Designed for precise metering, proper combustion, and reliable heating system operation. Direct replacement part built to Lennox factory standards.

Specifications: 

Brand: Lennox

Part Number: 79L53
Catalog Number: 65253700
Type: Gas Orifice, Tapered
Fuel Type: Natural Gas
Orifice Size: #38
Application: Gas furnace and burner assemblies