OEM Lennox Replacement Burner Kit — Y5348

The genuine OEM Lennox Y5348 replacement burner kit delivers the fuel-air mixture to the combustion chamber of your Lennox gas furnace, providing the clean, stable flame needed for efficient heating. Precisely engineered to Lennox specifications, it drops directly into compatible furnace models to restore proper ignition and even burn across every port.

A failing or corroded burner often shows up as delayed or rough ignition, a yellow or lifting flame instead of a crisp blue one, a rumbling or popping sound during startup, soot buildup, or a furnace that short-cycles and struggles to hold temperature. Rust, cracks, and clogged burner ports all degrade combustion and can trip the flame sensor or limit switch.

Choosing an OEM Lennox burner matters because burner port geometry, orifice alignment, and metal gauge are matched to your furnace's heat exchanger and gas valve. Aftermarket substitutes can alter the flame pattern, causing incomplete combustion, higher carbon monoxide risk, and premature heat-exchanger wear. The Y5348 kit ensures factory-rated performance, safe operation, and a proper fit the first time.